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gnu-social/extlib/DB/mysqli.php

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include external libs in a subdir to make install easier darcs-hash:20080822131714-84dde-6978424ded2ed1041a65142a25560654ac717fcd.gz
2008-08-22 09:17:14 -04:00
<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* The PEAR DB driver for PHP's mysqli extension
* for interacting with MySQL databases
*
* PHP versions 4 and 5
*
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
*
* @category Database
* @package DB
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version CVS: $Id: mysqli.php,v 1.82 2007/09/21 13:40:41 aharvey Exp $
* @link http://pear.php.net/package/DB
*/
/**
* Obtain the DB_common class so it can be extended from
*/
require_once 'DB/common.php';
/**
* The methods PEAR DB uses to interact with PHP's mysqli extension
* for interacting with MySQL databases
*
* This is for MySQL versions 4.1 and above. Requires PHP 5.
*
* Note that persistent connections no longer exist.
*
* These methods overload the ones declared in DB_common.
*
* @category Database
* @package DB
* @author Daniel Convissor <danielc@php.net>
* @copyright 1997-2007 The PHP Group
* @license http://www.php.net/license/3_0.txt PHP License 3.0
* @version Release: 1.7.14RC1
* @link http://pear.php.net/package/DB
* @since Class functional since Release 1.6.3
*/
class DB_mysqli extends DB_common
{
// {{{ properties
/**
* The DB driver type (mysql, oci8, odbc, etc.)
* @var string
*/
var $phptype = 'mysqli';
/**
* The database syntax variant to be used (db2, access, etc.), if any
* @var string
*/
var $dbsyntax = 'mysqli';
/**
* The capabilities of this DB implementation
*
* The 'new_link' element contains the PHP version that first provided
* new_link support for this DBMS. Contains false if it's unsupported.
*
* Meaning of the 'limit' element:
* + 'emulate' = emulate with fetch row by number
* + 'alter' = alter the query
* + false = skip rows
*
* @var array
*/
var $features = array(
'limit' => 'alter',
'new_link' => false,
'numrows' => true,
'pconnect' => false,
'prepare' => false,
'ssl' => true,
'transactions' => true,
);
/**
* A mapping of native error codes to DB error codes
* @var array
*/
var $errorcode_map = array(
1004 => DB_ERROR_CANNOT_CREATE,
1005 => DB_ERROR_CANNOT_CREATE,
1006 => DB_ERROR_CANNOT_CREATE,
1007 => DB_ERROR_ALREADY_EXISTS,
1008 => DB_ERROR_CANNOT_DROP,
1022 => DB_ERROR_ALREADY_EXISTS,
1044 => DB_ERROR_ACCESS_VIOLATION,
1046 => DB_ERROR_NODBSELECTED,
1048 => DB_ERROR_CONSTRAINT,
1049 => DB_ERROR_NOSUCHDB,
1050 => DB_ERROR_ALREADY_EXISTS,
1051 => DB_ERROR_NOSUCHTABLE,
1054 => DB_ERROR_NOSUCHFIELD,
1061 => DB_ERROR_ALREADY_EXISTS,
1062 => DB_ERROR_ALREADY_EXISTS,
1064 => DB_ERROR_SYNTAX,
1091 => DB_ERROR_NOT_FOUND,
1100 => DB_ERROR_NOT_LOCKED,
1136 => DB_ERROR_VALUE_COUNT_ON_ROW,
1142 => DB_ERROR_ACCESS_VIOLATION,
1146 => DB_ERROR_NOSUCHTABLE,
1216 => DB_ERROR_CONSTRAINT,
1217 => DB_ERROR_CONSTRAINT,
1356 => DB_ERROR_DIVZERO,
1451 => DB_ERROR_CONSTRAINT,
1452 => DB_ERROR_CONSTRAINT,
);
/**
* The raw database connection created by PHP
* @var resource
*/
var $connection;
/**
* The DSN information for connecting to a database
* @var array
*/
var $dsn = array();
/**
* Should data manipulation queries be committed automatically?
* @var bool
* @access private
*/
var $autocommit = true;
/**
* The quantity of transactions begun
*
* {@internal While this is private, it can't actually be designated
* private in PHP 5 because it is directly accessed in the test suite.}}
*
* @var integer
* @access private
*/
var $transaction_opcount = 0;
/**
* The database specified in the DSN
*
* It's a fix to allow calls to different databases in the same script.
*
* @var string
* @access private
*/
var $_db = '';
/**
* Array for converting MYSQLI_*_FLAG constants to text values
* @var array
* @access public
* @since Property available since Release 1.6.5
*/
var $mysqli_flags = array(
MYSQLI_NOT_NULL_FLAG => 'not_null',
MYSQLI_PRI_KEY_FLAG => 'primary_key',
MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
MYSQLI_BLOB_FLAG => 'blob',
MYSQLI_UNSIGNED_FLAG => 'unsigned',
MYSQLI_ZEROFILL_FLAG => 'zerofill',
MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
MYSQLI_TIMESTAMP_FLAG => 'timestamp',
MYSQLI_SET_FLAG => 'set',
// MYSQLI_NUM_FLAG => 'numeric', // unnecessary
// MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
MYSQLI_GROUP_FLAG => 'group_by'
);
/**
* Array for converting MYSQLI_TYPE_* constants to text values
* @var array
* @access public
* @since Property available since Release 1.6.5
*/
var $mysqli_types = array(
MYSQLI_TYPE_DECIMAL => 'decimal',
MYSQLI_TYPE_TINY => 'tinyint',
MYSQLI_TYPE_SHORT => 'int',
MYSQLI_TYPE_LONG => 'int',
MYSQLI_TYPE_FLOAT => 'float',
MYSQLI_TYPE_DOUBLE => 'double',
// MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
MYSQLI_TYPE_TIMESTAMP => 'timestamp',
MYSQLI_TYPE_LONGLONG => 'bigint',
MYSQLI_TYPE_INT24 => 'mediumint',
MYSQLI_TYPE_DATE => 'date',
MYSQLI_TYPE_TIME => 'time',
MYSQLI_TYPE_DATETIME => 'datetime',
MYSQLI_TYPE_YEAR => 'year',
MYSQLI_TYPE_NEWDATE => 'date',
MYSQLI_TYPE_ENUM => 'enum',
MYSQLI_TYPE_SET => 'set',
MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
MYSQLI_TYPE_LONG_BLOB => 'longblob',
MYSQLI_TYPE_BLOB => 'blob',
MYSQLI_TYPE_VAR_STRING => 'varchar',
MYSQLI_TYPE_STRING => 'char',
MYSQLI_TYPE_GEOMETRY => 'geometry',
/* These constants are conditionally compiled in ext/mysqli, so we'll
* define them by number rather than constant. */
16 => 'bit',
246 => 'decimal',
);
// }}}
// {{{ constructor
/**
* This constructor calls <kbd>$this->DB_common()</kbd>
*
* @return void
*/
function DB_mysqli()
{
$this->DB_common();
}
// }}}
// {{{ connect()
/**
* Connect to the database server, log in and open the database
*
* Don't call this method directly. Use DB::connect() instead.
*
* PEAR DB's mysqli driver supports the following extra DSN options:
* + When the 'ssl' $option passed to DB::connect() is true:
* + key The path to the key file.
* + cert The path to the certificate file.
* + ca The path to the certificate authority file.
* + capath The path to a directory that contains trusted SSL
* CA certificates in pem format.
* + cipher The list of allowable ciphers for SSL encryption.
*
* Example of how to connect using SSL:
* <code>
* require_once 'DB.php';
*
* $dsn = array(
* 'phptype' => 'mysqli',
* 'username' => 'someuser',
* 'password' => 'apasswd',
* 'hostspec' => 'localhost',
* 'database' => 'thedb',
* 'key' => 'client-key.pem',
* 'cert' => 'client-cert.pem',
* 'ca' => 'cacert.pem',
* 'capath' => '/path/to/ca/dir',
* 'cipher' => 'AES',
* );
*
* $options = array(
* 'ssl' => true,
* );
*
* $db = DB::connect($dsn, $options);
* if (PEAR::isError($db)) {
* die($db->getMessage());
* }
* </code>
*
* @param array $dsn the data source name
* @param bool $persistent should the connection be persistent?
*
* @return int DB_OK on success. A DB_Error object on failure.
*/
function connect($dsn, $persistent = false)
{
if (!PEAR::loadExtension('mysqli')) {
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
}
$this->dsn = $dsn;
if ($dsn['dbsyntax']) {
$this->dbsyntax = $dsn['dbsyntax'];
}
$ini = ini_get('track_errors');
@ini_set('track_errors', 1);
$php_errormsg = '';
if (((int) $this->getOption('ssl')) === 1) {
$init = mysqli_init();
mysqli_ssl_set(
$init,
empty($dsn['key']) ? null : $dsn['key'],
empty($dsn['cert']) ? null : $dsn['cert'],
empty($dsn['ca']) ? null : $dsn['ca'],
empty($dsn['capath']) ? null : $dsn['capath'],
empty($dsn['cipher']) ? null : $dsn['cipher']
);
if ($this->connection = @mysqli_real_connect(
$init,
$dsn['hostspec'],
$dsn['username'],
$dsn['password'],
$dsn['database'],
$dsn['port'],
$dsn['socket']))
{
$this->connection = $init;
}
} else {
$this->connection = @mysqli_connect(
$dsn['hostspec'],
$dsn['username'],
$dsn['password'],
$dsn['database'],
$dsn['port'],
$dsn['socket']
);
}
@ini_set('track_errors', $ini);
if (!$this->connection) {
if (($err = @mysqli_connect_error()) != '') {
return $this->raiseError(DB_ERROR_CONNECT_FAILED,
null, null, null,
$err);
} else {
return $this->raiseError(DB_ERROR_CONNECT_FAILED,
null, null, null,
$php_errormsg);
}
}
if ($dsn['database']) {
$this->_db = $dsn['database'];
}
return DB_OK;
}
// }}}
// {{{ disconnect()
/**
* Disconnects from the database server
*
* @return bool TRUE on success, FALSE on failure
*/
function disconnect()
{
$ret = @mysqli_close($this->connection);
$this->connection = null;
return $ret;
}
// }}}
// {{{ simpleQuery()
/**
* Sends a query to the database server
*
* @param string the SQL query string
*
* @return mixed + a PHP result resrouce for successful SELECT queries
* + the DB_OK constant for other successful queries
* + a DB_Error object on failure
*/
function simpleQuery($query)
{
$ismanip = $this->_checkManip($query);
$this->last_query = $query;
$query = $this->modifyQuery($query);
if ($this->_db) {
if (!@mysqli_select_db($this->connection, $this->_db)) {
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
}
}
if (!$this->autocommit && $ismanip) {
if ($this->transaction_opcount == 0) {
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=0');
$result = @mysqli_query($this->connection, 'BEGIN');
if (!$result) {
return $this->mysqliRaiseError();
}
}
$this->transaction_opcount++;
}
$result = @mysqli_query($this->connection, $query);
if (!$result) {
return $this->mysqliRaiseError();
}
if (is_object($result)) {
return $result;
}
return DB_OK;
}
// }}}
// {{{ nextResult()
/**
* Move the internal mysql result pointer to the next available result.
*
* This method has not been implemented yet.
*
* @param resource $result a valid sql result resource
* @return false
* @access public
*/
function nextResult($result)
{
return false;
}
// }}}
// {{{ fetchInto()
/**
* Places a row from the result set into the given array
*
* Formating of the array and the data therein are configurable.
* See DB_result::fetchInto() for more information.
*
* This method is not meant to be called directly. Use
* DB_result::fetchInto() instead. It can't be declared "protected"
* because DB_result is a separate object.
*
* @param resource $result the query result resource
* @param array $arr the referenced array to put the data in
* @param int $fetchmode how the resulting array should be indexed
* @param int $rownum the row number to fetch (0 = first row)
*
* @return mixed DB_OK on success, NULL when the end of a result set is
* reached or on failure
*
* @see DB_result::fetchInto()
*/
function fetchInto($result, &$arr, $fetchmode, $rownum = null)
{
if ($rownum !== null) {
if (!@mysqli_data_seek($result, $rownum)) {
return null;
}
}
if ($fetchmode & DB_FETCHMODE_ASSOC) {
$arr = @mysqli_fetch_array($result, MYSQLI_ASSOC);
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
$arr = array_change_key_case($arr, CASE_LOWER);
}
} else {
$arr = @mysqli_fetch_row($result);
}
if (!$arr) {
return null;
}
if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
/*
* Even though this DBMS already trims output, we do this because
* a field might have intentional whitespace at the end that
* gets removed by DB_PORTABILITY_RTRIM under another driver.
*/
$this->_rtrimArrayValues($arr);
}
if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
$this->_convertNullArrayValuesToEmpty($arr);
}
return DB_OK;
}
// }}}
// {{{ freeResult()
/**
* Deletes the result set and frees the memory occupied by the result set
*
* This method is not meant to be called directly. Use
* DB_result::free() instead. It can't be declared "protected"
* because DB_result is a separate object.
*
* @param resource $result PHP's query result resource
*
* @return bool TRUE on success, FALSE if $result is invalid
*
* @see DB_result::free()
*/
function freeResult($result)
{
return is_resource($result) ? mysqli_free_result($result) : false;
}
// }}}
// {{{ numCols()
/**
* Gets the number of columns in a result set
*
* This method is not meant to be called directly. Use
* DB_result::numCols() instead. It can't be declared "protected"
* because DB_result is a separate object.
*
* @param resource $result PHP's query result resource
*
* @return int the number of columns. A DB_Error object on failure.
*
* @see DB_result::numCols()
*/
function numCols($result)
{
$cols = @mysqli_num_fields($result);
if (!$cols) {
return $this->mysqliRaiseError();
}
return $cols;
}
// }}}
// {{{ numRows()
/**
* Gets the number of rows in a result set
*
* This method is not meant to be called directly. Use
* DB_result::numRows() instead. It can't be declared "protected"
* because DB_result is a separate object.
*
* @param resource $result PHP's query result resource
*
* @return int the number of rows. A DB_Error object on failure.
*
* @see DB_result::numRows()
*/
function numRows($result)
{
$rows = @mysqli_num_rows($result);
if ($rows === null) {
return $this->mysqliRaiseError();
}
return $rows;
}
// }}}
// {{{ autoCommit()
/**
* Enables or disables automatic commits
*
* @param bool $onoff true turns it on, false turns it off
*
* @return int DB_OK on success. A DB_Error object if the driver
* doesn't support auto-committing transactions.
*/
function autoCommit($onoff = false)
{
// XXX if $this->transaction_opcount > 0, we should probably
// issue a warning here.
$this->autocommit = $onoff ? true : false;
return DB_OK;
}
// }}}
// {{{ commit()
/**
* Commits the current transaction
*
* @return int DB_OK on success. A DB_Error object on failure.
*/
function commit()
{
if ($this->transaction_opcount > 0) {
if ($this->_db) {
if (!@mysqli_select_db($this->connection, $this->_db)) {
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
}
}
$result = @mysqli_query($this->connection, 'COMMIT');
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
$this->transaction_opcount = 0;
if (!$result) {
return $this->mysqliRaiseError();
}
}
return DB_OK;
}
// }}}
// {{{ rollback()
/**
* Reverts the current transaction
*
* @return int DB_OK on success. A DB_Error object on failure.
*/
function rollback()
{
if ($this->transaction_opcount > 0) {
if ($this->_db) {
if (!@mysqli_select_db($this->connection, $this->_db)) {
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
}
}
$result = @mysqli_query($this->connection, 'ROLLBACK');
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
$this->transaction_opcount = 0;
if (!$result) {
return $this->mysqliRaiseError();
}
}
return DB_OK;
}
// }}}
// {{{ affectedRows()
/**
* Determines the number of rows affected by a data maniuplation query
*
* 0 is returned for queries that don't manipulate data.
*
* @return int the number of rows. A DB_Error object on failure.
*/
function affectedRows()
{
if ($this->_last_query_manip) {
return @mysqli_affected_rows($this->connection);
} else {
return 0;
}
}
// }}}
// {{{ nextId()
/**
* Returns the next free id in a sequence
*
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true, the seqence is automatically
* created if it does not exist
*
* @return int the next id number in the sequence.
* A DB_Error object on failure.
*
* @see DB_common::nextID(), DB_common::getSequenceName(),
* DB_mysqli::createSequence(), DB_mysqli::dropSequence()
*/
function nextId($seq_name, $ondemand = true)
{
$seqname = $this->getSequenceName($seq_name);
do {
$repeat = 0;
$this->pushErrorHandling(PEAR_ERROR_RETURN);
$result = $this->query('UPDATE ' . $seqname
. ' SET id = LAST_INSERT_ID(id + 1)');
$this->popErrorHandling();
if ($result === DB_OK) {
// COMMON CASE
$id = @mysqli_insert_id($this->connection);
if ($id != 0) {
return $id;
}
// EMPTY SEQ TABLE
// Sequence table must be empty for some reason,
// so fill it and return 1
// Obtain a user-level lock
$result = $this->getOne('SELECT GET_LOCK('
. "'${seqname}_lock', 10)");
if (DB::isError($result)) {
return $this->raiseError($result);
}
if ($result == 0) {
return $this->mysqliRaiseError(DB_ERROR_NOT_LOCKED);
}
// add the default value
$result = $this->query('REPLACE INTO ' . $seqname
. ' (id) VALUES (0)');
if (DB::isError($result)) {
return $this->raiseError($result);
}
// Release the lock
$result = $this->getOne('SELECT RELEASE_LOCK('
. "'${seqname}_lock')");
if (DB::isError($result)) {
return $this->raiseError($result);
}
// We know what the result will be, so no need to try again
return 1;
} elseif ($ondemand && DB::isError($result) &&
$result->getCode() == DB_ERROR_NOSUCHTABLE)
{
// ONDEMAND TABLE CREATION
$result = $this->createSequence($seq_name);
// Since createSequence initializes the ID to be 1,
// we do not need to retrieve the ID again (or we will get 2)
if (DB::isError($result)) {
return $this->raiseError($result);
} else {
// First ID of a newly created sequence is 1
return 1;
}
} elseif (DB::isError($result) &&
$result->getCode() == DB_ERROR_ALREADY_EXISTS)
{
// BACKWARDS COMPAT
// see _BCsequence() comment
$result = $this->_BCsequence($seqname);
if (DB::isError($result)) {
return $this->raiseError($result);
}
$repeat = 1;
}
} while ($repeat);
return $this->raiseError($result);
}
/**
* Creates a new sequence
*
* @param string $seq_name name of the new sequence
*
* @return int DB_OK on success. A DB_Error object on failure.
*
* @see DB_common::createSequence(), DB_common::getSequenceName(),
* DB_mysqli::nextID(), DB_mysqli::dropSequence()
*/
function createSequence($seq_name)
{
$seqname = $this->getSequenceName($seq_name);
$res = $this->query('CREATE TABLE ' . $seqname
. ' (id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'
. ' PRIMARY KEY(id))');
if (DB::isError($res)) {
return $res;
}
// insert yields value 1, nextId call will generate ID 2
return $this->query("INSERT INTO ${seqname} (id) VALUES (0)");
}
// }}}
// {{{ dropSequence()
/**
* Deletes a sequence
*
* @param string $seq_name name of the sequence to be deleted
*
* @return int DB_OK on success. A DB_Error object on failure.
*
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
* DB_mysql::nextID(), DB_mysql::createSequence()
*/
function dropSequence($seq_name)
{
return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
}
// }}}
// {{{ _BCsequence()
/**
* Backwards compatibility with old sequence emulation implementation
* (clean up the dupes)
*
* @param string $seqname the sequence name to clean up
*
* @return bool true on success. A DB_Error object on failure.
*
* @access private
*/
function _BCsequence($seqname)
{
// Obtain a user-level lock... this will release any previous
// application locks, but unlike LOCK TABLES, it does not abort
// the current transaction and is much less frequently used.
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
if (DB::isError($result)) {
return $result;
}
if ($result == 0) {
// Failed to get the lock, can't do the conversion, bail
// with a DB_ERROR_NOT_LOCKED error
return $this->mysqliRaiseError(DB_ERROR_NOT_LOCKED);
}
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}");
if (DB::isError($highest_id)) {
return $highest_id;
}
// This should kill all rows except the highest
// We should probably do something if $highest_id isn't
// numeric, but I'm at a loss as how to handle that...
$result = $this->query('DELETE FROM ' . $seqname
. " WHERE id <> $highest_id");
if (DB::isError($result)) {
return $result;
}
// If another thread has been waiting for this lock,
// it will go thru the above procedure, but will have no
// real effect
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')");
if (DB::isError($result)) {
return $result;
}
return true;
}
// }}}
// {{{ quoteIdentifier()
/**
* Quotes a string so it can be safely used as a table or column name
* (WARNING: using names that require this is a REALLY BAD IDEA)
*
* WARNING: Older versions of MySQL can't handle the backtick
* character (<kbd>`</kbd>) in table or column names.
*
* @param string $str identifier name to be quoted
*
* @return string quoted identifier string
*
* @see DB_common::quoteIdentifier()
* @since Method available since Release 1.6.0
*/
function quoteIdentifier($str)
{
return '`' . str_replace('`', '``', $str) . '`';
}
// }}}
// {{{ escapeSimple()
/**
* Escapes a string according to the current DBMS's standards
*
* @param string $str the string to be escaped
*
* @return string the escaped string
*
* @see DB_common::quoteSmart()
* @since Method available since Release 1.6.0
*/
function escapeSimple($str)
{
return @mysqli_real_escape_string($this->connection, $str);
}
// }}}
// {{{ modifyLimitQuery()
/**
* Adds LIMIT clauses to a query string according to current DBMS standards
*
* @param string $query the query to modify
* @param int $from the row to start to fetching (0 = the first row)
* @param int $count the numbers of rows to fetch
* @param mixed $params array, string or numeric data to be used in
* execution of the statement. Quantity of items
* passed must match quantity of placeholders in
* query: meaning 1 placeholder for non-array
* parameters or 1 placeholder per array element.
*
* @return string the query string with LIMIT clauses added
*
* @access protected
*/
function modifyLimitQuery($query, $from, $count, $params = array())
{
if (DB::isManip($query) || $this->_next_query_manip) {
return $query . " LIMIT $count";
} else {
return $query . " LIMIT $from, $count";
}
}
// }}}
// {{{ mysqliRaiseError()
/**
* Produces a DB_Error object regarding the current problem
*
* @param int $errno if the error is being manually raised pass a
* DB_ERROR* constant here. If this isn't passed
* the error information gathered from the DBMS.
*
* @return object the DB_Error object
*
* @see DB_common::raiseError(),
* DB_mysqli::errorNative(), DB_common::errorCode()
*/
function mysqliRaiseError($errno = null)
{
if ($errno === null) {
if ($this->options['portability'] & DB_PORTABILITY_ERRORS) {
$this->errorcode_map[1022] = DB_ERROR_CONSTRAINT;
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT_NOT_NULL;
$this->errorcode_map[1062] = DB_ERROR_CONSTRAINT;
} else {
// Doing this in case mode changes during runtime.
$this->errorcode_map[1022] = DB_ERROR_ALREADY_EXISTS;
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT;
$this->errorcode_map[1062] = DB_ERROR_ALREADY_EXISTS;
}
$errno = $this->errorCode(mysqli_errno($this->connection));
}
return $this->raiseError($errno, null, null, null,
@mysqli_errno($this->connection) . ' ** ' .
@mysqli_error($this->connection));
}
// }}}
// {{{ errorNative()
/**
* Gets the DBMS' native error code produced by the last query
*
* @return int the DBMS' error code
*/
function errorNative()
{
return @mysqli_errno($this->connection);
}
// }}}
// {{{ tableInfo()
/**
* Returns information about a table or a result set
*
* @param object|string $result DB_result object from a query or a
* string containing the name of a table.
* While this also accepts a query result
* resource identifier, this behavior is
* deprecated.
* @param int $mode a valid tableInfo mode
*
* @return array an associative array with the information requested.
* A DB_Error object on failure.
*
* @see DB_common::setOption()
*/
function tableInfo($result, $mode = null)
{
if (is_string($result)) {
// Fix for bug #11580.
if ($this->_db) {
if (!@mysqli_select_db($this->connection, $this->_db)) {
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
}
}
/*
* Probably received a table name.
* Create a result resource identifier.
*/
$id = @mysqli_query($this->connection,
"SELECT * FROM $result LIMIT 0");
$got_string = true;
} elseif (isset($result->result)) {
/*
* Probably received a result object.
* Extract the result resource identifier.
*/
$id = $result->result;
$got_string = false;
} else {
/*
* Probably received a result resource identifier.
* Copy it.
* Deprecated. Here for compatibility only.
*/
$id = $result;
$got_string = false;
}
if (!is_a($id, 'mysqli_result')) {
return $this->mysqliRaiseError(DB_ERROR_NEED_MORE_DATA);
}
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
$case_func = 'strtolower';
} else {
$case_func = 'strval';
}
$count = @mysqli_num_fields($id);
$res = array();
if ($mode) {
$res['num_fields'] = $count;
}
for ($i = 0; $i < $count; $i++) {
$tmp = @mysqli_fetch_field($id);
$flags = '';
foreach ($this->mysqli_flags as $const => $means) {
if ($tmp->flags & $const) {
$flags .= $means . ' ';
}
}
if ($tmp->def) {
$flags .= 'default_' . rawurlencode($tmp->def);
}
$flags = trim($flags);
$res[$i] = array(
'table' => $case_func($tmp->table),
'name' => $case_func($tmp->name),
'type' => isset($this->mysqli_types[$tmp->type])
? $this->mysqli_types[$tmp->type]
: 'unknown',
// http://bugs.php.net/?id=36579
'len' => $tmp->length,
'flags' => $flags,
);
if ($mode & DB_TABLEINFO_ORDER) {
$res['order'][$res[$i]['name']] = $i;
}
if ($mode & DB_TABLEINFO_ORDERTABLE) {
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
}
}
// free the result only if we were called on a table
if ($got_string) {
@mysqli_free_result($id);
}
return $res;
}
// }}}
// {{{ getSpecialQuery()
/**
* Obtains the query string needed for listing a given type of objects
*
* @param string $type the kind of objects you want to retrieve
*
* @return string the SQL query string or null if the driver doesn't
* support the object type requested
*
* @access protected
* @see DB_common::getListOf()
*/
function getSpecialQuery($type)
{
switch ($type) {
case 'tables':
return 'SHOW TABLES';
case 'users':
return 'SELECT DISTINCT User FROM mysql.user';
case 'databases':
return 'SHOW DATABASES';
default:
return null;
}
}
// }}}
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
?>
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