724 lines
26 KiB
PHP
724 lines
26 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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/**
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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/**
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* Used by autoPrepare()
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*/
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define('MDB2_AUTOQUERY_INSERT', 1);
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define('MDB2_AUTOQUERY_UPDATE', 2);
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define('MDB2_AUTOQUERY_DELETE', 3);
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define('MDB2_AUTOQUERY_SELECT', 4);
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/**
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* MDB2_Extended: class which adds several high level methods to MDB2
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Extended extends MDB2_Module_Common
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{
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// {{{ autoPrepare()
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/**
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* Generate an insert, update or delete query and call prepare() on it
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*
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* @param string table
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* @param array the fields names
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* @param int type of query to build
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* MDB2_AUTOQUERY_INSERT
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* MDB2_AUTOQUERY_UPDATE
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* MDB2_AUTOQUERY_DELETE
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* MDB2_AUTOQUERY_SELECT
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* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
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* @param array that contains the types of the placeholders
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* @param mixed array that contains the types of the columns in
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* the result set or MDB2_PREPARE_RESULT, if set to
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* MDB2_PREPARE_MANIP the query is handled as a manipulation query
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*
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* @return resource handle for the query
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* @see buildManipSQL
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* @access public
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*/
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function autoPrepare($table, $table_fields, $mode = MDB2_AUTOQUERY_INSERT,
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$where = false, $types = null, $result_types = MDB2_PREPARE_MANIP)
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{
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$query = $this->buildManipSQL($table, $table_fields, $mode, $where);
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if (MDB2::isError($query)) {
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return $query;
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}
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$lobs = array();
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foreach ((array)$types as $param => $type) {
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if (($type == 'clob') || ($type == 'blob')) {
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$lobs[$param] = $table_fields[$param];
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}
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}
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return $db->prepare($query, $types, $result_types, $lobs);
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}
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// }}}
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// {{{ autoExecute()
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/**
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* Generate an insert, update or delete query and call prepare() and execute() on it
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*
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* @param string name of the table
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* @param array assoc ($key=>$value) where $key is a field name and $value its value
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* @param int type of query to build
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* MDB2_AUTOQUERY_INSERT
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* MDB2_AUTOQUERY_UPDATE
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* MDB2_AUTOQUERY_DELETE
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* MDB2_AUTOQUERY_SELECT
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* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
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* @param array that contains the types of the placeholders
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* @param string which specifies which result class to use
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* @param mixed array that contains the types of the columns in
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* the result set or MDB2_PREPARE_RESULT, if set to
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* MDB2_PREPARE_MANIP the query is handled as a manipulation query
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*
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* @return bool|MDB2_Error true on success, a MDB2 error on failure
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* @see buildManipSQL
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* @see autoPrepare
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* @access public
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*/
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function autoExecute($table, $fields_values, $mode = MDB2_AUTOQUERY_INSERT,
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$where = false, $types = null, $result_class = true, $result_types = MDB2_PREPARE_MANIP)
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{
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$fields_values = (array)$fields_values;
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if ($mode == MDB2_AUTOQUERY_SELECT) {
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if (is_array($result_types)) {
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$keys = array_keys($result_types);
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} elseif (!empty($fields_values)) {
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$keys = $fields_values;
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} else {
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$keys = array();
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}
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} else {
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$keys = array_keys($fields_values);
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}
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$params = array_values($fields_values);
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if (empty($params)) {
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$query = $this->buildManipSQL($table, $keys, $mode, $where);
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if ($mode == MDB2_AUTOQUERY_SELECT) {
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$result = $db->query($query, $result_types, $result_class);
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} else {
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$result = $db->exec($query);
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}
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} else {
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$stmt = $this->autoPrepare($table, $keys, $mode, $where, $types, $result_types);
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if (MDB2::isError($stmt)) {
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return $stmt;
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}
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$result = $stmt->execute($params, $result_class);
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$stmt->free();
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}
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return $result;
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}
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// }}}
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// {{{ buildManipSQL()
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/**
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* Make automaticaly an sql query for prepare()
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*
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* Example : buildManipSQL('table_sql', array('field1', 'field2', 'field3'), MDB2_AUTOQUERY_INSERT)
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* will return the string : INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?)
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* NB : - This belongs more to a SQL Builder class, but this is a simple facility
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* - Be carefull ! If you don't give a $where param with an UPDATE/DELETE query, all
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* the records of the table will be updated/deleted !
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*
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* @param string name of the table
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* @param ordered array containing the fields names
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* @param int type of query to build
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* MDB2_AUTOQUERY_INSERT
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* MDB2_AUTOQUERY_UPDATE
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* MDB2_AUTOQUERY_DELETE
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* MDB2_AUTOQUERY_SELECT
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* @param string (in case of update and delete queries, this string will be put after the sql WHERE statement)
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*
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* @return string sql query for prepare()
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* @access public
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*/
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function buildManipSQL($table, $table_fields, $mode, $where = false)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if ($db->options['quote_identifier']) {
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$table = $db->quoteIdentifier($table);
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}
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if (!empty($table_fields) && $db->options['quote_identifier']) {
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foreach ($table_fields as $key => $field) {
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$table_fields[$key] = $db->quoteIdentifier($field);
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}
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}
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if ((false !== $where) && (null !== $where)) {
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if (is_array($where)) {
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$where = implode(' AND ', $where);
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}
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$where = ' WHERE '.$where;
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}
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switch ($mode) {
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case MDB2_AUTOQUERY_INSERT:
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if (empty($table_fields)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'Insert requires table fields', __FUNCTION__);
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}
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$cols = implode(', ', $table_fields);
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$values = '?'.str_repeat(', ?', (count($table_fields) - 1));
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return 'INSERT INTO '.$table.' ('.$cols.') VALUES ('.$values.')';
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break;
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case MDB2_AUTOQUERY_UPDATE:
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if (empty($table_fields)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'Update requires table fields', __FUNCTION__);
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}
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$set = implode(' = ?, ', $table_fields).' = ?';
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$sql = 'UPDATE '.$table.' SET '.$set.$where;
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return $sql;
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break;
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case MDB2_AUTOQUERY_DELETE:
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$sql = 'DELETE FROM '.$table.$where;
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return $sql;
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break;
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case MDB2_AUTOQUERY_SELECT:
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$cols = !empty($table_fields) ? implode(', ', $table_fields) : '*';
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$sql = 'SELECT '.$cols.' FROM '.$table.$where;
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return $sql;
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break;
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}
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return $db->raiseError(MDB2_ERROR_SYNTAX, null, null,
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'Non existant mode', __FUNCTION__);
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}
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// }}}
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// {{{ limitQuery()
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/**
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* Generates a limited query
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*
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* @param string query
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* @param array that contains the types of the columns in the result set
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* @param integer the numbers of rows to fetch
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* @param integer the row to start to fetching
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* @param string which specifies which result class to use
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* @param mixed string which specifies which class to wrap results in
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*
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* @return MDB2_Result|MDB2_Error result set on success, a MDB2 error on failure
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* @access public
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*/
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function limitQuery($query, $types, $limit, $offset = 0, $result_class = true,
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$result_wrap_class = false)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$result = $db->setLimit($limit, $offset);
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if (MDB2::isError($result)) {
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return $result;
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}
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return $db->query($query, $types, $result_class, $result_wrap_class);
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}
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// }}}
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// {{{ execParam()
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/**
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* Execute a parameterized DML statement.
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*
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* @param string the SQL query
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* @param array if supplied, prepare/execute will be used
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* with this array as execute parameters
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* @param array that contains the types of the values defined in $params
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*
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* @return int|MDB2_Error affected rows on success, a MDB2 error on failure
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* @access public
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*/
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function execParam($query, $params = array(), $param_types = null)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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settype($params, 'array');
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if (empty($params)) {
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return $db->exec($query);
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}
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$stmt = $db->prepare($query, $param_types, MDB2_PREPARE_MANIP);
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if (MDB2::isError($stmt)) {
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return $stmt;
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}
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$result = $stmt->execute($params);
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if (MDB2::isError($result)) {
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return $result;
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}
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$stmt->free();
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return $result;
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}
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// }}}
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// {{{ getOne()
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/**
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* Fetch the first column of the first row of data returned from a query.
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* Takes care of doing the query and freeing the results when finished.
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*
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* @param string the SQL query
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* @param string that contains the type of the column in the result set
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* @param array if supplied, prepare/execute will be used
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* with this array as execute parameters
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* @param array that contains the types of the values defined in $params
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* @param int|string which column to return
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*
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* @return scalar|MDB2_Error data on success, a MDB2 error on failure
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* @access public
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*/
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function getOne($query, $type = null, $params = array(),
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$param_types = null, $colnum = 0)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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settype($params, 'array');
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settype($type, 'array');
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if (empty($params)) {
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return $db->queryOne($query, $type, $colnum);
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}
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$stmt = $db->prepare($query, $param_types, $type);
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if (MDB2::isError($stmt)) {
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return $stmt;
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}
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$result = $stmt->execute($params);
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if (!MDB2::isResultCommon($result)) {
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return $result;
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}
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$one = $result->fetchOne($colnum);
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$stmt->free();
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$result->free();
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return $one;
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}
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// }}}
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// {{{ getRow()
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/**
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* Fetch the first row of data returned from a query. Takes care
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* of doing the query and freeing the results when finished.
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*
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* @param string the SQL query
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* @param array that contains the types of the columns in the result set
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* @param array if supplied, prepare/execute will be used
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* with this array as execute parameters
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* @param array that contains the types of the values defined in $params
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* @param int the fetch mode to use
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*
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* @return array|MDB2_Error data on success, a MDB2 error on failure
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* @access public
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*/
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function getRow($query, $types = null, $params = array(),
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$param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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settype($params, 'array');
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if (empty($params)) {
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return $db->queryRow($query, $types, $fetchmode);
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}
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$stmt = $db->prepare($query, $param_types, $types);
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if (MDB2::isError($stmt)) {
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return $stmt;
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}
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$result = $stmt->execute($params);
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if (!MDB2::isResultCommon($result)) {
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return $result;
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}
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$row = $result->fetchRow($fetchmode);
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$stmt->free();
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$result->free();
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return $row;
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}
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// }}}
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// {{{ getCol()
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/**
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* Fetch a single column from a result set and return it as an
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* indexed array.
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*
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* @param string the SQL query
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* @param string that contains the type of the column in the result set
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* @param array if supplied, prepare/execute will be used
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* with this array as execute parameters
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* @param array that contains the types of the values defined in $params
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* @param int|string which column to return
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*
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* @return array|MDB2_Error data on success, a MDB2 error on failure
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* @access public
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*/
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function getCol($query, $type = null, $params = array(),
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$param_types = null, $colnum = 0)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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settype($params, 'array');
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settype($type, 'array');
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if (empty($params)) {
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return $db->queryCol($query, $type, $colnum);
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}
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$stmt = $db->prepare($query, $param_types, $type);
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if (MDB2::isError($stmt)) {
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return $stmt;
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}
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$result = $stmt->execute($params);
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if (!MDB2::isResultCommon($result)) {
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return $result;
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}
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$col = $result->fetchCol($colnum);
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$stmt->free();
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$result->free();
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return $col;
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}
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// }}}
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// {{{ getAll()
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/**
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* Fetch all the rows returned from a query.
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*
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* @param string the SQL query
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* @param array that contains the types of the columns in the result set
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* @param array if supplied, prepare/execute will be used
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* with this array as execute parameters
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* @param array that contains the types of the values defined in $params
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* @param int the fetch mode to use
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* @param bool if set to true, the $all will have the first
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* column as its first dimension
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* @param bool $force_array used only when the query returns exactly
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* two columns. If true, the values of the returned array will be
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* one-element arrays instead of scalars.
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* @param bool $group if true, the values of the returned array is
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* wrapped in another array. If the same key value (in the first
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* column) repeats itself, the values will be appended to this array
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* instead of overwriting the existing values.
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*
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* @return array|MDB2_Error data on success, a MDB2 error on failure
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* @access public
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*/
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function getAll($query, $types = null, $params = array(),
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$param_types = null, $fetchmode = MDB2_FETCHMODE_DEFAULT,
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$rekey = false, $force_array = false, $group = false)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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settype($params, 'array');
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if (empty($params)) {
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return $db->queryAll($query, $types, $fetchmode, $rekey, $force_array, $group);
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}
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|
|
$stmt = $db->prepare($query, $param_types, $types);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
|
|
$result = $stmt->execute($params);
|
|
if (!MDB2::isResultCommon($result)) {
|
|
return $result;
|
|
}
|
|
|
|
$all = $result->fetchAll($fetchmode, $rekey, $force_array, $group);
|
|
$stmt->free();
|
|
$result->free();
|
|
return $all;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getAssoc()
|
|
|
|
/**
|
|
* Fetch the entire result set of a query and return it as an
|
|
* associative array using the first column as the key.
|
|
*
|
|
* If the result set contains more than two columns, the value
|
|
* will be an array of the values from column 2-n. If the result
|
|
* set contains only two columns, the returned value will be a
|
|
* scalar with the value of the second column (unless forced to an
|
|
* array with the $force_array parameter). A MDB2 error code is
|
|
* returned on errors. If the result set contains fewer than two
|
|
* columns, a MDB2_ERROR_TRUNCATED error is returned.
|
|
*
|
|
* For example, if the table 'mytable' contains:
|
|
* <pre>
|
|
* ID TEXT DATE
|
|
* --------------------------------
|
|
* 1 'one' 944679408
|
|
* 2 'two' 944679408
|
|
* 3 'three' 944679408
|
|
* </pre>
|
|
* Then the call getAssoc('SELECT id,text FROM mytable') returns:
|
|
* <pre>
|
|
* array(
|
|
* '1' => 'one',
|
|
* '2' => 'two',
|
|
* '3' => 'three',
|
|
* )
|
|
* </pre>
|
|
* ...while the call getAssoc('SELECT id,text,date FROM mytable') returns:
|
|
* <pre>
|
|
* array(
|
|
* '1' => array('one', '944679408'),
|
|
* '2' => array('two', '944679408'),
|
|
* '3' => array('three', '944679408')
|
|
* )
|
|
* </pre>
|
|
*
|
|
* If the more than one row occurs with the same value in the
|
|
* first column, the last row overwrites all previous ones by
|
|
* default. Use the $group parameter if you don't want to
|
|
* overwrite like this. Example:
|
|
* <pre>
|
|
* getAssoc('SELECT category,id,name FROM mytable', null, null
|
|
* MDB2_FETCHMODE_ASSOC, false, true) returns:
|
|
* array(
|
|
* '1' => array(array('id' => '4', 'name' => 'number four'),
|
|
* array('id' => '6', 'name' => 'number six')
|
|
* ),
|
|
* '9' => array(array('id' => '4', 'name' => 'number four'),
|
|
* array('id' => '6', 'name' => 'number six')
|
|
* )
|
|
* )
|
|
* </pre>
|
|
*
|
|
* Keep in mind that database functions in PHP usually return string
|
|
* values for results regardless of the database's internal type.
|
|
*
|
|
* @param string the SQL query
|
|
* @param array that contains the types of the columns in the result set
|
|
* @param array if supplied, prepare/execute will be used
|
|
* with this array as execute parameters
|
|
* @param array that contains the types of the values defined in $params
|
|
* @param bool $force_array used only when the query returns
|
|
* exactly two columns. If TRUE, the values of the returned array
|
|
* will be one-element arrays instead of scalars.
|
|
* @param bool $group if TRUE, the values of the returned array
|
|
* is wrapped in another array. If the same key value (in the first
|
|
* column) repeats itself, the values will be appended to this array
|
|
* instead of overwriting the existing values.
|
|
*
|
|
* @return array|MDB2_Error data on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function getAssoc($query, $types = null, $params = array(), $param_types = null,
|
|
$fetchmode = MDB2_FETCHMODE_DEFAULT, $force_array = false, $group = false)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
settype($params, 'array');
|
|
if (empty($params)) {
|
|
return $db->queryAll($query, $types, $fetchmode, true, $force_array, $group);
|
|
}
|
|
|
|
$stmt = $db->prepare($query, $param_types, $types);
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
|
|
$result = $stmt->execute($params);
|
|
if (!MDB2::isResultCommon($result)) {
|
|
return $result;
|
|
}
|
|
|
|
$all = $result->fetchAll($fetchmode, true, $force_array, $group);
|
|
$stmt->free();
|
|
$result->free();
|
|
return $all;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ executeMultiple()
|
|
|
|
/**
|
|
* This function does several execute() calls on the same statement handle.
|
|
* $params must be an array indexed numerically from 0, one execute call is
|
|
* done for every 'row' in the array.
|
|
*
|
|
* If an error occurs during execute(), executeMultiple() does not execute
|
|
* the unfinished rows, but rather returns that error.
|
|
*
|
|
* @param resource query handle from prepare()
|
|
* @param array numeric array containing the data to insert into the query
|
|
*
|
|
* @return bool|MDB2_Error true on success, a MDB2 error on failure
|
|
* @access public
|
|
* @see prepare(), execute()
|
|
*/
|
|
function executeMultiple($stmt, $params = null)
|
|
{
|
|
if (MDB2::isError($stmt)) {
|
|
return $stmt;
|
|
}
|
|
for ($i = 0, $j = count($params); $i < $j; $i++) {
|
|
$result = $stmt->execute($params[$i]);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getBeforeID()
|
|
|
|
/**
|
|
* Returns the next free id of a sequence if the RDBMS
|
|
* does not support auto increment
|
|
*
|
|
* @param string name of the table into which a new row was inserted
|
|
* @param string name of the field into which a new row was inserted
|
|
* @param bool when true the sequence is automatic created, if it not exists
|
|
* @param bool if the returned value should be quoted
|
|
*
|
|
* @return int|MDB2_Error id on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function getBeforeID($table, $field = null, $ondemand = true, $quote = true)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if ($db->supports('auto_increment') !== true) {
|
|
$seq = $table.(empty($field) ? '' : '_'.$field);
|
|
$id = $db->nextID($seq, $ondemand);
|
|
if (!$quote || MDB2::isError($id)) {
|
|
return $id;
|
|
}
|
|
return $db->quote($id, 'integer');
|
|
} elseif (!$quote) {
|
|
return null;
|
|
}
|
|
return 'NULL';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getAfterID()
|
|
|
|
/**
|
|
* Returns the autoincrement ID if supported or $id
|
|
*
|
|
* @param mixed value as returned by getBeforeId()
|
|
* @param string name of the table into which a new row was inserted
|
|
* @param string name of the field into which a new row was inserted
|
|
*
|
|
* @return int|MDB2_Error id on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function getAfterID($id, $table, $field = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
if ($db->supports('auto_increment') !== true) {
|
|
return $id;
|
|
}
|
|
return $db->lastInsertID($table, $field);
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
?>
|