1506 lines
42 KiB
PHP
1506 lines
42 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Database independent query interface
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*
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* PHP version 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category Database
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* @package DB
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* @author Stig Bakken <ssb@php.net>
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* @author Tomas V.V.Cox <cox@idecnet.com>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version CVS: $Id$
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* @link http://pear.php.net/package/DB
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*/
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/**
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* Obtain the PEAR class so it can be extended from
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*/
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require_once 'PEAR.php';
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// {{{ constants
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// {{{ error codes
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/**#@+
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* One of PEAR DB's portable error codes.
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* @see DB_common::errorCode(), DB::errorMessage()
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*
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* {@internal If you add an error code here, make sure you also add a textual
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* version of it in DB::errorMessage().}}
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*/
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/**
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* The code returned by many methods upon success
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*/
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define('DB_OK', 1);
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/**
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* Unkown error
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*/
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define('DB_ERROR', -1);
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/**
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* Syntax error
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*/
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define('DB_ERROR_SYNTAX', -2);
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/**
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* Tried to insert a duplicate value into a primary or unique index
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*/
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define('DB_ERROR_CONSTRAINT', -3);
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/**
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* An identifier in the query refers to a non-existant object
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*/
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define('DB_ERROR_NOT_FOUND', -4);
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/**
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* Tried to create a duplicate object
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*/
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define('DB_ERROR_ALREADY_EXISTS', -5);
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/**
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* The current driver does not support the action you attempted
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*/
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define('DB_ERROR_UNSUPPORTED', -6);
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/**
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* The number of parameters does not match the number of placeholders
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*/
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define('DB_ERROR_MISMATCH', -7);
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/**
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* A literal submitted did not match the data type expected
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*/
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define('DB_ERROR_INVALID', -8);
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/**
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* The current DBMS does not support the action you attempted
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*/
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define('DB_ERROR_NOT_CAPABLE', -9);
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/**
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* A literal submitted was too long so the end of it was removed
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*/
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define('DB_ERROR_TRUNCATED', -10);
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/**
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* A literal number submitted did not match the data type expected
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*/
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define('DB_ERROR_INVALID_NUMBER', -11);
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/**
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* A literal date submitted did not match the data type expected
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*/
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define('DB_ERROR_INVALID_DATE', -12);
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/**
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* Attempt to divide something by zero
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*/
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define('DB_ERROR_DIVZERO', -13);
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/**
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* A database needs to be selected
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*/
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define('DB_ERROR_NODBSELECTED', -14);
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/**
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* Could not create the object requested
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*/
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define('DB_ERROR_CANNOT_CREATE', -15);
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/**
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* Could not drop the database requested because it does not exist
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*/
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define('DB_ERROR_CANNOT_DROP', -17);
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/**
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* An identifier in the query refers to a non-existant table
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*/
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define('DB_ERROR_NOSUCHTABLE', -18);
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/**
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* An identifier in the query refers to a non-existant column
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*/
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define('DB_ERROR_NOSUCHFIELD', -19);
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/**
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* The data submitted to the method was inappropriate
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*/
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define('DB_ERROR_NEED_MORE_DATA', -20);
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/**
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* The attempt to lock the table failed
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*/
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define('DB_ERROR_NOT_LOCKED', -21);
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/**
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* The number of columns doesn't match the number of values
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*/
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define('DB_ERROR_VALUE_COUNT_ON_ROW', -22);
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/**
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* The DSN submitted has problems
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*/
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define('DB_ERROR_INVALID_DSN', -23);
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/**
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* Could not connect to the database
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*/
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define('DB_ERROR_CONNECT_FAILED', -24);
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/**
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* The PHP extension needed for this DBMS could not be found
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*/
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define('DB_ERROR_EXTENSION_NOT_FOUND', -25);
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/**
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* The present user has inadequate permissions to perform the task requestd
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*/
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define('DB_ERROR_ACCESS_VIOLATION', -26);
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/**
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* The database requested does not exist
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*/
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define('DB_ERROR_NOSUCHDB', -27);
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/**
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* Tried to insert a null value into a column that doesn't allow nulls
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*/
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define('DB_ERROR_CONSTRAINT_NOT_NULL', -29);
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/**#@-*/
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// }}}
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// {{{ prepared statement-related
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/**#@+
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* Identifiers for the placeholders used in prepared statements.
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* @see DB_common::prepare()
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*/
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/**
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* Indicates a scalar (<kbd>?</kbd>) placeholder was used
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*
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* Quote and escape the value as necessary.
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*/
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define('DB_PARAM_SCALAR', 1);
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/**
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* Indicates an opaque (<kbd>&</kbd>) placeholder was used
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*
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* The value presented is a file name. Extract the contents of that file
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* and place them in this column.
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*/
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define('DB_PARAM_OPAQUE', 2);
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/**
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* Indicates a misc (<kbd>!</kbd>) placeholder was used
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*
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* The value should not be quoted or escaped.
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*/
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define('DB_PARAM_MISC', 3);
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/**#@-*/
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// }}}
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// {{{ binary data-related
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/**#@+
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* The different ways of returning binary data from queries.
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*/
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/**
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* Sends the fetched data straight through to output
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*/
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define('DB_BINMODE_PASSTHRU', 1);
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/**
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* Lets you return data as usual
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*/
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define('DB_BINMODE_RETURN', 2);
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/**
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* Converts the data to hex format before returning it
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*
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* For example the string "123" would become "313233".
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*/
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define('DB_BINMODE_CONVERT', 3);
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/**#@-*/
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// }}}
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// {{{ fetch modes
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/**#@+
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* Fetch Modes.
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* @see DB_common::setFetchMode()
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*/
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/**
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* Indicates the current default fetch mode should be used
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* @see DB_common::$fetchmode
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*/
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define('DB_FETCHMODE_DEFAULT', 0);
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/**
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* Column data indexed by numbers, ordered from 0 and up
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*/
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define('DB_FETCHMODE_ORDERED', 1);
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/**
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* Column data indexed by column names
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*/
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define('DB_FETCHMODE_ASSOC', 2);
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/**
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* Column data as object properties
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*/
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define('DB_FETCHMODE_OBJECT', 3);
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/**
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* For multi-dimensional results, make the column name the first level
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* of the array and put the row number in the second level of the array
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*
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* This is flipped from the normal behavior, which puts the row numbers
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* in the first level of the array and the column names in the second level.
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*/
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define('DB_FETCHMODE_FLIPPED', 4);
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/**#@-*/
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/**#@+
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* Old fetch modes. Left here for compatibility.
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*/
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define('DB_GETMODE_ORDERED', DB_FETCHMODE_ORDERED);
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define('DB_GETMODE_ASSOC', DB_FETCHMODE_ASSOC);
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define('DB_GETMODE_FLIPPED', DB_FETCHMODE_FLIPPED);
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/**#@-*/
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// }}}
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// {{{ tableInfo() && autoPrepare()-related
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/**#@+
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* The type of information to return from the tableInfo() method.
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*
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* Bitwised constants, so they can be combined using <kbd>|</kbd>
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* and removed using <kbd>^</kbd>.
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*
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* @see DB_common::tableInfo()
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*
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* {@internal Since the TABLEINFO constants are bitwised, if more of them are
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* added in the future, make sure to adjust DB_TABLEINFO_FULL accordingly.}}
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*/
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define('DB_TABLEINFO_ORDER', 1);
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define('DB_TABLEINFO_ORDERTABLE', 2);
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define('DB_TABLEINFO_FULL', 3);
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/**#@-*/
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/**#@+
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* The type of query to create with the automatic query building methods.
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* @see DB_common::autoPrepare(), DB_common::autoExecute()
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*/
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define('DB_AUTOQUERY_INSERT', 1);
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define('DB_AUTOQUERY_UPDATE', 2);
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/**#@-*/
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// }}}
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// {{{ portability modes
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/**#@+
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* Portability Modes.
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*
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* Bitwised constants, so they can be combined using <kbd>|</kbd>
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* and removed using <kbd>^</kbd>.
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*
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* @see DB_common::setOption()
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*
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* {@internal Since the PORTABILITY constants are bitwised, if more of them are
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* added in the future, make sure to adjust DB_PORTABILITY_ALL accordingly.}}
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*/
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/**
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* Turn off all portability features
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*/
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define('DB_PORTABILITY_NONE', 0);
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/**
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* Convert names of tables and fields to lower case
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* when using the get*(), fetch*() and tableInfo() methods
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*/
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define('DB_PORTABILITY_LOWERCASE', 1);
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/**
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* Right trim the data output by get*() and fetch*()
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*/
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define('DB_PORTABILITY_RTRIM', 2);
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/**
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* Force reporting the number of rows deleted
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*/
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define('DB_PORTABILITY_DELETE_COUNT', 4);
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/**
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* Enable hack that makes numRows() work in Oracle
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*/
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define('DB_PORTABILITY_NUMROWS', 8);
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/**
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* Makes certain error messages in certain drivers compatible
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* with those from other DBMS's
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*
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* + mysql, mysqli: change unique/primary key constraints
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* DB_ERROR_ALREADY_EXISTS -> DB_ERROR_CONSTRAINT
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*
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* + odbc(access): MS's ODBC driver reports 'no such field' as code
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* 07001, which means 'too few parameters.' When this option is on
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* that code gets mapped to DB_ERROR_NOSUCHFIELD.
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*/
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define('DB_PORTABILITY_ERRORS', 16);
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/**
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* Convert null values to empty strings in data output by
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* get*() and fetch*()
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*/
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define('DB_PORTABILITY_NULL_TO_EMPTY', 32);
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/**
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* Turn on all portability features
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*/
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define('DB_PORTABILITY_ALL', 63);
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/**#@-*/
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// }}}
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// }}}
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// {{{ class DB
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/**
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* Database independent query interface
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*
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* The main "DB" class is simply a container class with some static
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* methods for creating DB objects as well as some utility functions
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* common to all parts of DB.
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*
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* The object model of DB is as follows (indentation means inheritance):
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* <pre>
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* DB The main DB class. This is simply a utility class
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* with some "static" methods for creating DB objects as
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* well as common utility functions for other DB classes.
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*
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* DB_common The base for each DB implementation. Provides default
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* | implementations (in OO lingo virtual methods) for
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* | the actual DB implementations as well as a bunch of
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* | query utility functions.
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* |
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* +-DB_mysql The DB implementation for MySQL. Inherits DB_common.
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* When calling DB::factory or DB::connect for MySQL
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* connections, the object returned is an instance of this
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* class.
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* </pre>
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*
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* @category Database
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* @package DB
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* @author Stig Bakken <ssb@php.net>
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* @author Tomas V.V.Cox <cox@idecnet.com>
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2007 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version Release: 1.9.2
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* @link http://pear.php.net/package/DB
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*/
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class DB
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{
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// {{{ factory()
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/**
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* Create a new DB object for the specified database type but don't
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* connect to the database
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*
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* @param string $type the database type (eg "mysql")
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* @param array $options an associative array of option names and values
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*
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* @return object a new DB object. A DB_Error object on failure.
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*
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* @see DB_common::setOption()
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*/
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public static function factory($type, $options = [])
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{
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if (!is_array($options)) {
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$options = array('persistent' => $options);
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}
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if (isset($options['debug']) && $options['debug'] >= 2) {
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// expose php errors with sufficient debug level
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include_once "DB/{$type}.php";
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} else {
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@include_once "DB/{$type}.php";
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}
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$classname = "DB_${type}";
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if (!class_exists($classname)) {
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$tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
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"Unable to include the DB/{$type}.php"
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. " file for '$dsn'",
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'DB_Error', true);
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return $tmp;
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}
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@$obj = new $classname;
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foreach ($options as $option => $value) {
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$test = $obj->setOption($option, $value);
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if (DB::isError($test)) {
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return $test;
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}
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}
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return $obj;
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}
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// }}}
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// {{{ connect()
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/**
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* Determines if a variable is a DB_Error object
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*
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* @param mixed $value the variable to check
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*
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* @return bool whether $value is DB_Error object
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*/
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public static function isError($value)
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{
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return is_object($value) && is_a($value, 'DB_Error');
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}
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// }}}
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// {{{ apiVersion()
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/**
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* Create a new DB object including a connection to the specified database
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*
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* Example 1.
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* <code>
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* require_once 'DB.php';
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*
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* $dsn = 'pgsql://user:password@host/database';
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* $options = array(
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* 'debug' => 2,
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* 'portability' => DB_PORTABILITY_ALL,
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* );
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*
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* $db = DB::connect($dsn, $options);
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* if (PEAR::isError($db)) {
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* die($db->getMessage());
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* }
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* </code>
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*
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* @param mixed $dsn the string "data source name" or array in the
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* format returned by DB::parseDSN()
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* @param array $options an associative array of option names and values
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*
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* @return object a new DB object. A DB_Error object on failure.
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*
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* @uses DB_dbase::connect(), DB_fbsql::connect(), DB_ibase::connect(),
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* DB_ifx::connect(), DB_msql::connect(), DB_mssql::connect(),
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* DB_mysql::connect(), DB_mysqli::connect(), DB_oci8::connect(),
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* DB_odbc::connect(), DB_pgsql::connect(), DB_sqlite::connect(),
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* DB_sybase::connect()
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*
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* @uses DB::parseDSN(), DB_common::setOption(), PEAR::isError()
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*/
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public static function connect($dsn, $options = array())
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{
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$dsninfo = DB::parseDSN($dsn);
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$type = $dsninfo['phptype'];
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if (!is_array($options)) {
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/*
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* For backwards compatibility. $options used to be boolean,
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* indicating whether the connection should be persistent.
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*/
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$options = array('persistent' => $options);
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}
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if (isset($options['debug']) && $options['debug'] >= 2) {
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// expose php errors with sufficient debug level
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include_once "DB/${type}.php";
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} else {
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@include_once "DB/${type}.php";
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}
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$classname = "DB_${type}";
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if (!class_exists($classname)) {
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$tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
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"Unable to include the DB/{$type}.php"
|
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. " file for '"
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. DB::getDSNString($dsn, true) . "'",
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'DB_Error', true);
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return $tmp;
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}
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@$obj = new $classname;
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foreach ($options as $option => $value) {
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$test = $obj->setOption($option, $value);
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if (DB::isError($test)) {
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return $test;
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}
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}
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$err = $obj->connect($dsninfo, $obj->getOption('persistent'));
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if (DB::isError($err)) {
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if (is_array($dsn)) {
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$err->addUserInfo(DB::getDSNString($dsn, true));
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} else {
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$err->addUserInfo($dsn);
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}
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return $err;
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}
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return $obj;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isError()
|
|
|
|
/**
|
|
* Parse a data source name
|
|
*
|
|
* Additional keys can be added by appending a URI query string to the
|
|
* end of the DSN.
|
|
*
|
|
* The format of the supplied DSN is in its fullest form:
|
|
* <code>
|
|
* phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
|
|
* </code>
|
|
*
|
|
* Most variations are allowed:
|
|
* <code>
|
|
* phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
|
|
* phptype://username:password@hostspec/database_name
|
|
* phptype://username:password@hostspec
|
|
* phptype://username@hostspec
|
|
* phptype://hostspec/database
|
|
* phptype://hostspec
|
|
* phptype(dbsyntax)
|
|
* phptype
|
|
* </code>
|
|
*
|
|
* @param string $dsn Data Source Name to be parsed
|
|
*
|
|
* @return array an associative array with the following keys:
|
|
* + phptype: Database backend used in PHP (mysql, odbc etc.)
|
|
* + dbsyntax: Database used with regards to SQL syntax etc.
|
|
* + protocol: Communication protocol to use (tcp, unix etc.)
|
|
* + hostspec: Host specification (hostname[:port])
|
|
* + database: Database to use on the DBMS server
|
|
* + username: User name for login
|
|
* + password: Password for login
|
|
*/
|
|
public static function parseDSN($dsn)
|
|
{
|
|
$parsed = array(
|
|
'phptype' => false,
|
|
'dbsyntax' => false,
|
|
'username' => false,
|
|
'password' => false,
|
|
'protocol' => false,
|
|
'hostspec' => false,
|
|
'port' => false,
|
|
'socket' => false,
|
|
'database' => false,
|
|
);
|
|
|
|
if (is_array($dsn)) {
|
|
$dsn = array_merge($parsed, $dsn);
|
|
if (!$dsn['dbsyntax']) {
|
|
$dsn['dbsyntax'] = $dsn['phptype'];
|
|
}
|
|
return $dsn;
|
|
}
|
|
|
|
// Find phptype and dbsyntax
|
|
if (($pos = strpos($dsn, '://')) !== false) {
|
|
$str = substr($dsn, 0, $pos);
|
|
$dsn = substr($dsn, $pos + 3);
|
|
} else {
|
|
$str = $dsn;
|
|
$dsn = null;
|
|
}
|
|
|
|
// Get phptype and dbsyntax
|
|
// $str => phptype(dbsyntax)
|
|
if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
|
|
$parsed['phptype'] = $arr[1];
|
|
$parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
|
|
} else {
|
|
$parsed['phptype'] = $str;
|
|
$parsed['dbsyntax'] = $str;
|
|
}
|
|
|
|
if (!strlen($dsn)) {
|
|
return $parsed;
|
|
}
|
|
|
|
// Get (if found): username and password
|
|
// $dsn => username:password@protocol+hostspec/database
|
|
if (($at = strrpos($dsn, '@')) !== false) {
|
|
$str = substr($dsn, 0, $at);
|
|
$dsn = substr($dsn, $at + 1);
|
|
if (($pos = strpos($str, ':')) !== false) {
|
|
$parsed['username'] = rawurldecode(substr($str, 0, $pos));
|
|
$parsed['password'] = rawurldecode(substr($str, $pos + 1));
|
|
} else {
|
|
$parsed['username'] = rawurldecode($str);
|
|
}
|
|
}
|
|
|
|
// Find protocol and hostspec
|
|
|
|
if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
|
|
// $dsn => proto(proto_opts)/database
|
|
$proto = $match[1];
|
|
$proto_opts = $match[2] ? $match[2] : false;
|
|
$dsn = $match[3];
|
|
|
|
} else {
|
|
// $dsn => protocol+hostspec/database (old format)
|
|
if (strpos($dsn, '+') !== false) {
|
|
list($proto, $dsn) = explode('+', $dsn, 2);
|
|
}
|
|
if (strpos($dsn, '/') !== false) {
|
|
list($proto_opts, $dsn) = explode('/', $dsn, 2);
|
|
} else {
|
|
$proto_opts = $dsn;
|
|
$dsn = null;
|
|
}
|
|
}
|
|
|
|
// process the different protocol options
|
|
$parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
|
|
$proto_opts = rawurldecode($proto_opts);
|
|
if (strpos($proto_opts, ':') !== false) {
|
|
list($proto_opts, $parsed['port']) = explode(':', $proto_opts);
|
|
}
|
|
if ($parsed['protocol'] == 'tcp') {
|
|
$parsed['hostspec'] = $proto_opts;
|
|
} elseif ($parsed['protocol'] == 'unix') {
|
|
$parsed['socket'] = $proto_opts;
|
|
}
|
|
|
|
// Get dabase if any
|
|
// $dsn => database
|
|
if ($dsn) {
|
|
if (($pos = strpos($dsn, '?')) === false) {
|
|
// /database
|
|
$parsed['database'] = rawurldecode($dsn);
|
|
} else {
|
|
// /database?param1=value1¶m2=value2
|
|
$parsed['database'] = rawurldecode(substr($dsn, 0, $pos));
|
|
$dsn = substr($dsn, $pos + 1);
|
|
if (strpos($dsn, '&') !== false) {
|
|
$opts = explode('&', $dsn);
|
|
} else { // database?param1=value1
|
|
$opts = array($dsn);
|
|
}
|
|
foreach ($opts as $opt) {
|
|
list($key, $value) = explode('=', $opt);
|
|
if (!isset($parsed[$key])) {
|
|
// don't allow params overwrite
|
|
$parsed[$key] = rawurldecode($value);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $parsed;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isConnection()
|
|
|
|
/**
|
|
* Returns the given DSN in a string format suitable for output.
|
|
*
|
|
* @param array|string the DSN to parse and format
|
|
* @param boolean true to hide the password, false to include it
|
|
* @return string
|
|
*/
|
|
public static function getDSNString($dsn, $hidePassword)
|
|
{
|
|
/* Calling parseDSN will ensure that we have all the array elements
|
|
* defined, and means that we deal with strings and array in the same
|
|
* manner. */
|
|
$dsnArray = DB::parseDSN($dsn);
|
|
|
|
if ($hidePassword) {
|
|
$dsnArray['password'] = 'PASSWORD';
|
|
}
|
|
|
|
/* Protocol is special-cased, as using the default "tcp" along with an
|
|
* Oracle TNS connection string fails. */
|
|
if (is_string($dsn) && strpos($dsn, 'tcp') === false && $dsnArray['protocol'] == 'tcp') {
|
|
$dsnArray['protocol'] = false;
|
|
}
|
|
|
|
// Now we just have to construct the actual string. This is ugly.
|
|
$dsnString = $dsnArray['phptype'];
|
|
if ($dsnArray['dbsyntax']) {
|
|
$dsnString .= '(' . $dsnArray['dbsyntax'] . ')';
|
|
}
|
|
$dsnString .= '://'
|
|
. $dsnArray['username']
|
|
. ':'
|
|
. $dsnArray['password']
|
|
. '@'
|
|
. $dsnArray['protocol'];
|
|
if ($dsnArray['socket']) {
|
|
$dsnString .= '(' . $dsnArray['socket'] . ')';
|
|
}
|
|
if ($dsnArray['protocol'] && $dsnArray['hostspec']) {
|
|
$dsnString .= '+';
|
|
}
|
|
$dsnString .= $dsnArray['hostspec'];
|
|
if ($dsnArray['port']) {
|
|
$dsnString .= ':' . $dsnArray['port'];
|
|
}
|
|
$dsnString .= '/' . $dsnArray['database'];
|
|
|
|
/* Option handling. Unfortunately, parseDSN simply places options into
|
|
* the top-level array, so we'll first get rid of the fields defined by
|
|
* DB and see what's left. */
|
|
unset($dsnArray['phptype'],
|
|
$dsnArray['dbsyntax'],
|
|
$dsnArray['username'],
|
|
$dsnArray['password'],
|
|
$dsnArray['protocol'],
|
|
$dsnArray['socket'],
|
|
$dsnArray['hostspec'],
|
|
$dsnArray['port'],
|
|
$dsnArray['database']
|
|
);
|
|
if (count($dsnArray) > 0) {
|
|
$dsnString .= '?';
|
|
$i = 0;
|
|
foreach ($dsnArray as $key => $value) {
|
|
if (++$i > 1) {
|
|
$dsnString .= '&';
|
|
}
|
|
$dsnString .= $key . '=' . $value;
|
|
}
|
|
}
|
|
|
|
return $dsnString;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ isManip()
|
|
|
|
/**
|
|
* Determines if a value is a DB_<driver> object
|
|
*
|
|
* @param mixed $value the value to test
|
|
*
|
|
* @return bool whether $value is a DB_<driver> object
|
|
*/
|
|
public static function isConnection($value)
|
|
{
|
|
return (is_object($value) &&
|
|
is_subclass_of($value, 'db_common') &&
|
|
method_exists($value, 'simpleQuery'));
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorMessage()
|
|
|
|
/**
|
|
* Tell whether a query is a data manipulation or data definition query
|
|
*
|
|
* Examples of data manipulation queries are INSERT, UPDATE and DELETE.
|
|
* Examples of data definition queries are CREATE, DROP, ALTER, GRANT,
|
|
* REVOKE.
|
|
*
|
|
* @param string $query the query
|
|
*
|
|
* @return boolean whether $query is a data manipulation query
|
|
*/
|
|
public static function isManip($query)
|
|
{
|
|
$manips = 'INSERT|UPDATE|DELETE|REPLACE|'
|
|
. 'CREATE|DROP|'
|
|
. 'LOAD DATA|SELECT .* INTO .* FROM|COPY|'
|
|
. 'ALTER|GRANT|REVOKE|'
|
|
. 'LOCK|UNLOCK';
|
|
if (preg_match('/^\s*"?(' . $manips . ')\s+/i', $query)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ parseDSN()
|
|
|
|
/**
|
|
* Return a textual error message for a DB error code
|
|
*
|
|
* @param integer $value the DB error code
|
|
*
|
|
* @return string the error message or false if the error code was
|
|
* not recognized
|
|
*/
|
|
public static function errorMessage($value)
|
|
{
|
|
static $errorMessages;
|
|
if (!isset($errorMessages)) {
|
|
$errorMessages = array(
|
|
DB_ERROR => 'unknown error',
|
|
DB_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
|
|
DB_ERROR_ALREADY_EXISTS => 'already exists',
|
|
DB_ERROR_CANNOT_CREATE => 'can not create',
|
|
DB_ERROR_CANNOT_DROP => 'can not drop',
|
|
DB_ERROR_CONNECT_FAILED => 'connect failed',
|
|
DB_ERROR_CONSTRAINT => 'constraint violation',
|
|
DB_ERROR_CONSTRAINT_NOT_NULL => 'null value violates not-null constraint',
|
|
DB_ERROR_DIVZERO => 'division by zero',
|
|
DB_ERROR_EXTENSION_NOT_FOUND => 'extension not found',
|
|
DB_ERROR_INVALID => 'invalid',
|
|
DB_ERROR_INVALID_DATE => 'invalid date or time',
|
|
DB_ERROR_INVALID_DSN => 'invalid DSN',
|
|
DB_ERROR_INVALID_NUMBER => 'invalid number',
|
|
DB_ERROR_MISMATCH => 'mismatch',
|
|
DB_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
|
|
DB_ERROR_NODBSELECTED => 'no database selected',
|
|
DB_ERROR_NOSUCHDB => 'no such database',
|
|
DB_ERROR_NOSUCHFIELD => 'no such field',
|
|
DB_ERROR_NOSUCHTABLE => 'no such table',
|
|
DB_ERROR_NOT_CAPABLE => 'DB backend not capable',
|
|
DB_ERROR_NOT_FOUND => 'not found',
|
|
DB_ERROR_NOT_LOCKED => 'not locked',
|
|
DB_ERROR_SYNTAX => 'syntax error',
|
|
DB_ERROR_UNSUPPORTED => 'not supported',
|
|
DB_ERROR_TRUNCATED => 'truncated',
|
|
DB_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
|
|
DB_OK => 'no error',
|
|
);
|
|
}
|
|
|
|
if (DB::isError($value)) {
|
|
$value = $value->getCode();
|
|
}
|
|
|
|
return isset($errorMessages[$value]) ? $errorMessages[$value]
|
|
: $errorMessages[DB_ERROR];
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getDSNString()
|
|
|
|
/**
|
|
* Return the DB API version
|
|
*
|
|
* @return string the DB API version number
|
|
*/
|
|
function apiVersion()
|
|
{
|
|
return '1.9.2';
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ class DB_Error
|
|
|
|
/**
|
|
* DB_Error implements a class for reporting portable database error
|
|
* messages
|
|
*
|
|
* @category Database
|
|
* @package DB
|
|
* @author Stig Bakken <ssb@php.net>
|
|
* @copyright 1997-2007 The PHP Group
|
|
* @license http://www.php.net/license/3_0.txt PHP License 3.0
|
|
* @version Release: 1.9.2
|
|
* @link http://pear.php.net/package/DB
|
|
*/
|
|
class DB_Error extends PEAR_Error
|
|
{
|
|
// {{{ constructor
|
|
|
|
/**
|
|
* DB_Error constructor
|
|
*
|
|
* @param mixed $code DB error code, or string with error message
|
|
* @param int $mode what "error mode" to operate in
|
|
* @param int $level what error level to use for $mode &
|
|
* PEAR_ERROR_TRIGGER
|
|
* @param mixed $debuginfo additional debug info, such as the last query
|
|
*
|
|
* @see PEAR_Error
|
|
*/
|
|
function __construct($code = DB_ERROR, $mode = PEAR_ERROR_RETURN,
|
|
$level = E_USER_NOTICE, $debuginfo = null)
|
|
{
|
|
if (is_int($code)) {
|
|
parent::__construct('DB Error: ' . DB::errorMessage($code), $code,
|
|
$mode, $level, $debuginfo);
|
|
} else {
|
|
parent::__construct("DB Error: $code", DB_ERROR,
|
|
$mode, $level, $debuginfo);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Workaround to both avoid the "Redefining already defined constructor"
|
|
* PHP error and provide backward compatibility in case someone is calling
|
|
* DB_Error() dynamically
|
|
* @param $method
|
|
* @param $arguments
|
|
* @return bool|mixed
|
|
*/
|
|
public function __call($method, $arguments)
|
|
{
|
|
if ($method == 'DB_Error') {
|
|
return call_user_func_array(array($this, '__construct'), $arguments);
|
|
}
|
|
trigger_error(
|
|
'Call to undefined method DB_Error::' . $method . '()', E_USER_ERROR
|
|
);
|
|
return false;
|
|
}
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ class DB_result
|
|
|
|
/**
|
|
* This class implements a wrapper for a DB result set
|
|
*
|
|
* A new instance of this class will be returned by the DB implementation
|
|
* after processing a query that returns data.
|
|
*
|
|
* @category Database
|
|
* @package DB
|
|
* @author Stig Bakken <ssb@php.net>
|
|
* @copyright 1997-2007 The PHP Group
|
|
* @license http://www.php.net/license/3_0.txt PHP License 3.0
|
|
* @version Release: 1.9.2
|
|
* @link http://pear.php.net/package/DB
|
|
*/
|
|
class DB_result
|
|
{
|
|
// {{{ properties
|
|
|
|
/**
|
|
* Should results be freed automatically when there are no more rows?
|
|
* @var boolean
|
|
* @see DB_common::$options
|
|
*/
|
|
var $autofree;
|
|
|
|
/**
|
|
* A reference to the DB_<driver> object
|
|
* @var object
|
|
*/
|
|
var $dbh;
|
|
|
|
/**
|
|
* The current default fetch mode
|
|
* @var integer
|
|
* @see DB_common::$fetchmode
|
|
*/
|
|
var $fetchmode;
|
|
|
|
/**
|
|
* The name of the class into which results should be fetched when
|
|
* DB_FETCHMODE_OBJECT is in effect
|
|
*
|
|
* @var string
|
|
* @see DB_common::$fetchmode_object_class
|
|
*/
|
|
var $fetchmode_object_class;
|
|
|
|
/**
|
|
* The number of rows to fetch from a limit query
|
|
* @var integer
|
|
*/
|
|
var $limit_count = null;
|
|
|
|
/**
|
|
* The row to start fetching from in limit queries
|
|
* @var integer
|
|
*/
|
|
var $limit_from = null;
|
|
|
|
/**
|
|
* The execute parameters that created this result
|
|
* @var array
|
|
* @since Property available since Release 1.7.0
|
|
*/
|
|
var $parameters;
|
|
|
|
/**
|
|
* The query string that created this result
|
|
*
|
|
* Copied here incase it changes in $dbh, which is referenced
|
|
*
|
|
* @var string
|
|
* @since Property available since Release 1.7.0
|
|
*/
|
|
var $query;
|
|
|
|
/**
|
|
* The query result resource id created by PHP
|
|
* @var resource
|
|
*/
|
|
var $result;
|
|
|
|
/**
|
|
* The present row being dealt with
|
|
* @var integer
|
|
*/
|
|
var $row_counter = null;
|
|
|
|
/**
|
|
* The prepared statement resource id created by PHP in $dbh
|
|
*
|
|
* This resource is only available when the result set was created using
|
|
* a driver's native execute() method, not PEAR DB's emulated one.
|
|
*
|
|
* Copied here incase it changes in $dbh, which is referenced
|
|
*
|
|
* {@internal Mainly here because the InterBase/Firebird API is only
|
|
* able to retrieve data from result sets if the statemnt handle is
|
|
* still in scope.}}
|
|
*
|
|
* @var resource
|
|
* @since Property available since Release 1.7.0
|
|
*/
|
|
var $statement;
|
|
|
|
|
|
// }}}
|
|
// {{{ constructor
|
|
|
|
/**
|
|
* This constructor sets the object's properties
|
|
*
|
|
* @param object &$dbh the DB object reference
|
|
* @param resource $result the result resource id
|
|
* @param array $options an associative array with result options
|
|
*
|
|
* @return void
|
|
*/
|
|
function __construct(&$dbh, $result, $options = array())
|
|
{
|
|
$this->autofree = $dbh->options['autofree'];
|
|
$this->dbh = &$dbh;
|
|
$this->fetchmode = $dbh->fetchmode;
|
|
$this->fetchmode_object_class = $dbh->fetchmode_object_class;
|
|
$this->parameters = $dbh->last_parameters;
|
|
$this->query = $dbh->last_query;
|
|
$this->result = $result;
|
|
$this->statement = empty($dbh->last_stmt) ? null : $dbh->last_stmt;
|
|
foreach ($options as $key => $value) {
|
|
$this->setOption($key, $value);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set options for the DB_result object
|
|
*
|
|
* @param string $key the option to set
|
|
* @param mixed $value the value to set the option to
|
|
*
|
|
* @return void
|
|
*/
|
|
function setOption($key, $value = null)
|
|
{
|
|
switch ($key) {
|
|
case 'limit_from':
|
|
$this->limit_from = $value;
|
|
break;
|
|
case 'limit_count':
|
|
$this->limit_count = $value;
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ fetchRow()
|
|
|
|
/**
|
|
* Fetch a row of data and return it by reference into an array
|
|
*
|
|
* The type of array returned can be controlled either by setting this
|
|
* method's <var>$fetchmode</var> parameter or by changing the default
|
|
* fetch mode setFetchMode() before calling this method.
|
|
*
|
|
* There are two options for standardizing the information returned
|
|
* from databases, ensuring their values are consistent when changing
|
|
* DBMS's. These portability options can be turned on when creating a
|
|
* new DB object or by using setOption().
|
|
*
|
|
* + <var>DB_PORTABILITY_LOWERCASE</var>
|
|
* convert names of fields to lower case
|
|
*
|
|
* + <var>DB_PORTABILITY_RTRIM</var>
|
|
* right trim the data
|
|
*
|
|
* @param int $fetchmode the constant indicating how to format the data
|
|
* @param int $rownum the row number to fetch (index starts at 0)
|
|
*
|
|
* @return mixed an array or object containing the row's data,
|
|
* NULL when the end of the result set is reached
|
|
* or a DB_Error object on failure.
|
|
*
|
|
* @see DB_common::setOption(), DB_common::setFetchMode()
|
|
*/
|
|
function &fetchRow($fetchmode = DB_FETCHMODE_DEFAULT, $rownum = null)
|
|
{
|
|
if ($fetchmode === DB_FETCHMODE_DEFAULT) {
|
|
$fetchmode = $this->fetchmode;
|
|
}
|
|
if ($fetchmode === DB_FETCHMODE_OBJECT) {
|
|
$fetchmode = DB_FETCHMODE_ASSOC;
|
|
$object_class = $this->fetchmode_object_class;
|
|
}
|
|
if (is_null($rownum) && $this->limit_from !== null) {
|
|
if ($this->row_counter === null) {
|
|
$this->row_counter = $this->limit_from;
|
|
// Skip rows
|
|
if ($this->dbh->features['limit'] === false) {
|
|
$i = 0;
|
|
while ($i++ < $this->limit_from) {
|
|
$this->dbh->fetchInto($this->result, $arr, $fetchmode);
|
|
}
|
|
}
|
|
}
|
|
if ($this->row_counter >= ($this->limit_from + $this->limit_count)) {
|
|
if ($this->autofree) {
|
|
$this->free();
|
|
}
|
|
$tmp = null;
|
|
return $tmp;
|
|
}
|
|
if ($this->dbh->features['limit'] === 'emulate') {
|
|
$rownum = $this->row_counter;
|
|
}
|
|
$this->row_counter++;
|
|
}
|
|
$res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
|
|
if ($res === DB_OK) {
|
|
if (isset($object_class)) {
|
|
// The default mode is specified in the
|
|
// DB_common::fetchmode_object_class property
|
|
if ($object_class == 'stdClass') {
|
|
$arr = (object)$arr;
|
|
} else {
|
|
$arr = new $object_class($arr);
|
|
}
|
|
}
|
|
return $arr;
|
|
}
|
|
if ($res == null && $this->autofree) {
|
|
$this->free();
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ fetchInto()
|
|
|
|
/**
|
|
* Frees the resources allocated for this result set
|
|
*
|
|
* @return bool true on success. A DB_Error object on failure.
|
|
*/
|
|
function free()
|
|
{
|
|
$err = $this->dbh->freeResult($this->result);
|
|
if (DB::isError($err)) {
|
|
return $err;
|
|
}
|
|
$this->result = false;
|
|
$this->statement = false;
|
|
return true;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ numCols()
|
|
|
|
/**
|
|
* Fetch a row of data into an array which is passed by reference
|
|
*
|
|
* The type of array returned can be controlled either by setting this
|
|
* method's <var>$fetchmode</var> parameter or by changing the default
|
|
* fetch mode setFetchMode() before calling this method.
|
|
*
|
|
* There are two options for standardizing the information returned
|
|
* from databases, ensuring their values are consistent when changing
|
|
* DBMS's. These portability options can be turned on when creating a
|
|
* new DB object or by using setOption().
|
|
*
|
|
* + <var>DB_PORTABILITY_LOWERCASE</var>
|
|
* convert names of fields to lower case
|
|
*
|
|
* + <var>DB_PORTABILITY_RTRIM</var>
|
|
* right trim the data
|
|
*
|
|
* @param array &$arr the variable where the data should be placed
|
|
* @param int $fetchmode the constant indicating how to format the data
|
|
* @param int $rownum the row number to fetch (index starts at 0)
|
|
*
|
|
* @return mixed DB_OK if a row is processed, NULL when the end of the
|
|
* result set is reached or a DB_Error object on failure
|
|
*
|
|
* @see DB_common::setOption(), DB_common::setFetchMode()
|
|
*/
|
|
function fetchInto(&$arr, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum = null)
|
|
{
|
|
if ($fetchmode === DB_FETCHMODE_DEFAULT) {
|
|
$fetchmode = $this->fetchmode;
|
|
}
|
|
if ($fetchmode === DB_FETCHMODE_OBJECT) {
|
|
$fetchmode = DB_FETCHMODE_ASSOC;
|
|
$object_class = $this->fetchmode_object_class;
|
|
}
|
|
if (is_null($rownum) && $this->limit_from !== null) {
|
|
if ($this->row_counter === null) {
|
|
$this->row_counter = $this->limit_from;
|
|
// Skip rows
|
|
if ($this->dbh->features['limit'] === false) {
|
|
$i = 0;
|
|
while ($i++ < $this->limit_from) {
|
|
$this->dbh->fetchInto($this->result, $arr, $fetchmode);
|
|
}
|
|
}
|
|
}
|
|
if ($this->row_counter >= (
|
|
$this->limit_from + $this->limit_count)) {
|
|
if ($this->autofree) {
|
|
$this->free();
|
|
}
|
|
return null;
|
|
}
|
|
if ($this->dbh->features['limit'] === 'emulate') {
|
|
$rownum = $this->row_counter;
|
|
}
|
|
|
|
$this->row_counter++;
|
|
}
|
|
$res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
|
|
if ($res === DB_OK) {
|
|
if (isset($object_class)) {
|
|
// default mode specified in the
|
|
// DB_common::fetchmode_object_class property
|
|
if ($object_class == 'stdClass') {
|
|
$arr = (object)$arr;
|
|
} else {
|
|
$arr = new $object_class($arr);
|
|
}
|
|
}
|
|
return DB_OK;
|
|
}
|
|
if ($res == null && $this->autofree) {
|
|
$this->free();
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ numRows()
|
|
|
|
/**
|
|
* Get the the number of columns in a result set
|
|
*
|
|
* @return int the number of columns. A DB_Error object on failure.
|
|
*/
|
|
function numCols()
|
|
{
|
|
return $this->dbh->numCols($this->result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ nextResult()
|
|
|
|
/**
|
|
* Get the number of rows in a result set
|
|
*
|
|
* @return int the number of rows. A DB_Error object on failure.
|
|
*/
|
|
function numRows()
|
|
{
|
|
if ($this->dbh->features['numrows'] === 'emulate'
|
|
&& $this->dbh->options['portability'] & DB_PORTABILITY_NUMROWS) {
|
|
if ($this->dbh->features['prepare']) {
|
|
$res = $this->dbh->query($this->query, $this->parameters);
|
|
} else {
|
|
$res = $this->dbh->query($this->query);
|
|
}
|
|
if (DB::isError($res)) {
|
|
return $res;
|
|
}
|
|
$i = 0;
|
|
while ($res->fetchInto($tmp, DB_FETCHMODE_ORDERED)) {
|
|
$i++;
|
|
}
|
|
$count = $i;
|
|
} else {
|
|
$count = $this->dbh->numRows($this->result);
|
|
}
|
|
|
|
/* fbsql is checked for here because limit queries are implemented
|
|
* using a TOP() function, which results in fbsql_num_rows still
|
|
* returning the total number of rows that would have been returned,
|
|
* rather than the real number. As a result, we'll just do the limit
|
|
* calculations for fbsql in the same way as a database with emulated
|
|
* limits. Unfortunately, we can't just do this in DB_fbsql::numRows()
|
|
* because that only gets the result resource, rather than the full
|
|
* DB_Result object. */
|
|
if (($this->dbh->features['limit'] === 'emulate'
|
|
&& $this->limit_from !== null)
|
|
|| $this->dbh->phptype == 'fbsql') {
|
|
$limit_count = is_null($this->limit_count) ? $count : $this->limit_count;
|
|
if ($count < $this->limit_from) {
|
|
$count = 0;
|
|
} elseif ($count < ($this->limit_from + $limit_count)) {
|
|
$count -= $this->limit_from;
|
|
} else {
|
|
$count = $limit_count;
|
|
}
|
|
}
|
|
|
|
return $count;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ free()
|
|
|
|
/**
|
|
* Get the next result if a batch of queries was executed
|
|
*
|
|
* @return bool true if a new result is available or false if not
|
|
*/
|
|
function nextResult()
|
|
{
|
|
return $this->dbh->nextResult($this->result);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ tableInfo()
|
|
|
|
/**
|
|
* @param null $mode
|
|
* @return
|
|
* @see DB_common::tableInfo()
|
|
* @deprecated Method deprecated some time before Release 1.2
|
|
*/
|
|
function tableInfo($mode = null)
|
|
{
|
|
if (is_string($mode)) {
|
|
return $this->dbh->raiseError(DB_ERROR_NEED_MORE_DATA);
|
|
}
|
|
return $this->dbh->tableInfo($this, $mode);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getQuery()
|
|
|
|
/**
|
|
* Determine the query string that created this result
|
|
*
|
|
* @return string the query string
|
|
*
|
|
* @since Method available since Release 1.7.0
|
|
*/
|
|
function getQuery()
|
|
{
|
|
return $this->query;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getRowCounter()
|
|
|
|
/**
|
|
* Tells which row number is currently being processed
|
|
*
|
|
* @return integer the current row being looked at. Starts at 1.
|
|
*/
|
|
function getRowCounter()
|
|
{
|
|
return $this->row_counter;
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ class DB_row
|
|
|
|
/**
|
|
* PEAR DB Row Object
|
|
*
|
|
* The object contains a row of data from a result set. Each column's data
|
|
* is placed in a property named for the column.
|
|
*
|
|
* @category Database
|
|
* @package DB
|
|
* @author Stig Bakken <ssb@php.net>
|
|
* @copyright 1997-2007 The PHP Group
|
|
* @license http://www.php.net/license/3_0.txt PHP License 3.0
|
|
* @version Release: 1.9.2
|
|
* @link http://pear.php.net/package/DB
|
|
* @see DB_common::setFetchMode()
|
|
*/
|
|
class DB_row
|
|
{
|
|
// {{{ constructor
|
|
|
|
/**
|
|
* The constructor places a row's data into properties of this object
|
|
*
|
|
* @param array the array containing the row's data
|
|
*
|
|
* @return void
|
|
*/
|
|
function __construct(&$arr)
|
|
{
|
|
foreach ($arr as $key => $value) {
|
|
$this->$key = &$arr[$key];
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
|
|
// }}}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/ |