832 lines
24 KiB
PHP
832 lines
24 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* The PEAR DB driver for PHP's msql extension
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* for interacting with Mini SQL databases
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*
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* PHP's mSQL extension did weird things with NULL values prior to PHP
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* 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
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* those versions.
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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 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 DB_common class so it can be extended from
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*/
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require_once 'DB/common.php';
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/**
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* The methods PEAR DB uses to interact with PHP's msql extension
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* for interacting with Mini SQL databases
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*
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* These methods overload the ones declared in DB_common.
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*
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* PHP's mSQL extension did weird things with NULL values prior to PHP
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* 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
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* those versions.
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*
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* @category Database
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* @package DB
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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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* @since Class not functional until Release 1.7.0
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*/
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class DB_msql extends DB_common
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{
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// {{{ properties
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/**
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* The DB driver type (mysql, oci8, odbc, etc.)
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* @var string
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*/
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var $phptype = 'msql';
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/**
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* The database syntax variant to be used (db2, access, etc.), if any
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* @var string
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*/
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var $dbsyntax = 'msql';
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/**
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* The capabilities of this DB implementation
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*
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* The 'new_link' element contains the PHP version that first provided
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* new_link support for this DBMS. Contains false if it's unsupported.
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*
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* Meaning of the 'limit' element:
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* + 'emulate' = emulate with fetch row by number
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* + 'alter' = alter the query
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* + false = skip rows
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*
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* @var array
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*/
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var $features = array(
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'limit' => 'emulate',
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'new_link' => false,
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'numrows' => true,
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'pconnect' => true,
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'prepare' => false,
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'ssl' => false,
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'transactions' => false,
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);
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/**
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* A mapping of native error codes to DB error codes
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* @var array
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*/
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var $errorcode_map = array(
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);
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/**
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* The raw database connection created by PHP
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* @var resource
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*/
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var $connection;
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/**
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* The DSN information for connecting to a database
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* @var array
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*/
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var $dsn = array();
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/**
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* The query result resource created by PHP
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*
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* Used to make affectedRows() work. Only contains the result for
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* data manipulation queries. Contains false for other queries.
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*
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* @var resource
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* @access private
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*/
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var $_result;
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>parent::__construct()</kbd>
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*
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* @return void
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*/
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function __construct()
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{
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parent::__construct();
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}
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// }}}
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// {{{ connect()
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/**
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* Connect to the database server, log in and open the database
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*
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* Don't call this method directly. Use DB::connect() instead.
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*
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* Example of how to connect:
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* <code>
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* require_once 'DB.php';
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*
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* // $dsn = 'msql://hostname/dbname'; // use a TCP connection
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* $dsn = 'msql:///dbname'; // use a socket
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* $options = array(
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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 array $dsn the data source name
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* @param bool $persistent should the connection be persistent?
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*/
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function connect($dsn, $persistent = false)
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{
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if (!PEAR::loadExtension('msql')) {
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
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}
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$this->dsn = $dsn;
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if ($dsn['dbsyntax']) {
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$this->dbsyntax = $dsn['dbsyntax'];
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}
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$params = array();
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if ($dsn['hostspec']) {
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$params[] = $dsn['port']
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? $dsn['hostspec'] . ',' . $dsn['port']
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: $dsn['hostspec'];
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}
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$connect_function = $persistent ? 'msql_pconnect' : 'msql_connect';
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$ini = ini_get('track_errors');
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$php_errormsg = '';
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if ($ini) {
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$this->connection = @call_user_func_array($connect_function,
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$params);
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} else {
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@ini_set('track_errors', 1);
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$this->connection = @call_user_func_array($connect_function,
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$params);
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@ini_set('track_errors', $ini);
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}
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if (!$this->connection) {
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if (($err = @msql_error()) != '') {
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return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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null, null, null,
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$err);
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} else {
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return $this->raiseError(DB_ERROR_CONNECT_FAILED,
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null, null, null,
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$php_errormsg);
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}
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}
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if (!@msql_select_db($dsn['database'], $this->connection)) {
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return $this->msqlRaiseError();
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}
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return DB_OK;
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}
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// }}}
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// {{{ disconnect()
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/**
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* Disconnects from the database server
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*
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* @return bool TRUE on success, FALSE on failure
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*/
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function disconnect()
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{
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$ret = @msql_close($this->connection);
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$this->connection = null;
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return $ret;
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}
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// }}}
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// {{{ simpleQuery()
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/**
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* Sends a query to the database server
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*
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* @param string the SQL query string
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*
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* @return mixed + a PHP result resrouce for successful SELECT queries
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* + the DB_OK constant for other successful queries
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* + a DB_Error object on failure
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*/
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function simpleQuery($query)
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{
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$this->last_query = $query;
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$query = $this->modifyQuery($query);
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$result = @msql_query($query, $this->connection);
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if (!$result) {
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return $this->msqlRaiseError();
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}
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// Determine which queries that should return data, and which
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// should return an error code only.
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if ($this->_checkManip($query)) {
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$this->_result = $result;
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return DB_OK;
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} else {
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$this->_result = false;
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return $result;
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}
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}
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// }}}
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// {{{ nextResult()
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/**
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* Move the internal msql result pointer to the next available result
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*
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* @param a valid fbsql result resource
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*
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* @access public
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*
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* @return true if a result is available otherwise return false
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*/
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function nextResult($result)
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{
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return false;
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}
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// }}}
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// {{{ fetchInto()
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/**
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* Places a row from the result set into the given array
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*
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* Formating of the array and the data therein are configurable.
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* See DB_result::fetchInto() for more information.
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*
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* This method is not meant to be called directly. Use
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* DB_result::fetchInto() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* PHP's mSQL extension did weird things with NULL values prior to PHP
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* 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
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* those versions.
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*
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* @param resource $result the query result resource
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* @param array $arr the referenced array to put the data in
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* @param int $fetchmode how the resulting array should be indexed
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* @param int $rownum the row number to fetch (0 = first row)
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*
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* @return mixed DB_OK on success, NULL when the end of a result set is
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* reached or on failure
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*
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* @see DB_result::fetchInto()
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*/
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function fetchInto($result, &$arr, $fetchmode, $rownum = null)
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{
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if ($rownum !== null) {
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if (!@msql_data_seek($result, $rownum)) {
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return null;
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}
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}
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if ($fetchmode & DB_FETCHMODE_ASSOC) {
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$arr = @msql_fetch_array($result, MSQL_ASSOC);
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if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
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$arr = array_change_key_case($arr, CASE_LOWER);
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}
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} else {
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$arr = @msql_fetch_row($result);
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}
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if (!$arr) {
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return null;
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}
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if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
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$this->_rtrimArrayValues($arr);
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}
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if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
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$this->_convertNullArrayValuesToEmpty($arr);
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}
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return DB_OK;
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}
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// }}}
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// {{{ freeResult()
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/**
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* Deletes the result set and frees the memory occupied by the result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::free() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return bool TRUE on success, FALSE if $result is invalid
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*
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* @see DB_result::free()
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*/
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function freeResult($result)
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{
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return is_resource($result) ? msql_free_result($result) : false;
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}
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// }}}
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// {{{ numCols()
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/**
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* Gets the number of columns in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numCols() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return int the number of columns. A DB_Error object on failure.
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*
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* @see DB_result::numCols()
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*/
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function numCols($result)
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{
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$cols = @msql_num_fields($result);
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if (!$cols) {
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return $this->msqlRaiseError();
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}
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return $cols;
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}
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// }}}
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// {{{ numRows()
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/**
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* Gets the number of rows in a result set
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*
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* This method is not meant to be called directly. Use
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* DB_result::numRows() instead. It can't be declared "protected"
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* because DB_result is a separate object.
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*
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* @param resource $result PHP's query result resource
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*
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* @return int the number of rows. A DB_Error object on failure.
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*
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* @see DB_result::numRows()
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*/
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function numRows($result)
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{
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$rows = @msql_num_rows($result);
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if ($rows === false) {
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return $this->msqlRaiseError();
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}
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return $rows;
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}
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// }}}
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// {{{ affected()
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/**
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* Determines the number of rows affected by a data maniuplation query
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*
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* 0 is returned for queries that don't manipulate data.
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*
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* @return int the number of rows. A DB_Error object on failure.
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*/
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function affectedRows()
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{
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if (!$this->_result) {
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return 0;
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}
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return msql_affected_rows($this->_result);
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}
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// }}}
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// {{{ nextId()
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/**
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* Returns the next free id in a sequence
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*
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* @param string $seq_name name of the sequence
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* @param boolean $ondemand when true, the seqence is automatically
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* created if it does not exist
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*
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* @return int the next id number in the sequence.
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* A DB_Error object on failure.
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*
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* @see DB_common::nextID(), DB_common::getSequenceName(),
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* DB_msql::createSequence(), DB_msql::dropSequence()
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*/
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function nextId($seq_name, $ondemand = true)
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{
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$seqname = $this->getSequenceName($seq_name);
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$repeat = false;
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do {
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$this->pushErrorHandling(PEAR_ERROR_RETURN);
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$result = $this->query("SELECT _seq FROM ${seqname}");
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$this->popErrorHandling();
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if ($ondemand && DB::isError($result) &&
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$result->getCode() == DB_ERROR_NOSUCHTABLE) {
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$repeat = true;
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$this->pushErrorHandling(PEAR_ERROR_RETURN);
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$result = $this->createSequence($seq_name);
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$this->popErrorHandling();
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if (DB::isError($result)) {
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return $this->raiseError($result);
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}
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} else {
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$repeat = false;
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}
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} while ($repeat);
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if (DB::isError($result)) {
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return $this->raiseError($result);
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}
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$arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
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$result->free();
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return $arr[0];
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}
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// }}}
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// {{{ createSequence()
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/**
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* Creates a new sequence
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*
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* Also creates a new table to associate the sequence with. Uses
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* a separate table to ensure portability with other drivers.
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*
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* @param string $seq_name name of the new sequence
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*
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* @see DB_common::createSequence(), DB_common::getSequenceName(),
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* DB_msql::nextID(), DB_msql::dropSequence()
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*/
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function createSequence($seq_name)
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{
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$seqname = $this->getSequenceName($seq_name);
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$res = $this->query('CREATE TABLE ' . $seqname
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. ' (id INTEGER NOT NULL)');
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if (DB::isError($res)) {
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return $res;
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}
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$res = $this->query("CREATE SEQUENCE ON ${seqname}");
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return $res;
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}
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// }}}
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// {{{ dropSequence()
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/**
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* Deletes a sequence
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*
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* @param string $seq_name name of the sequence to be deleted
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*
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* @return int DB_OK on success. A DB_Error object on failure.
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*
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* @see DB_common::dropSequence(), DB_common::getSequenceName(),
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* DB_msql::nextID(), DB_msql::createSequence()
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*/
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function dropSequence($seq_name)
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{
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return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
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}
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// }}}
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// {{{ quoteIdentifier()
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/**
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* mSQL does not support delimited identifiers
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*
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* @param string $str the identifier name to be quoted
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*
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* @return object a DB_Error object
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*
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* @see DB_common::quoteIdentifier()
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* @since Method available since Release 1.7.0
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*/
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function quoteIdentifier($str)
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{
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return $this->raiseError(DB_ERROR_UNSUPPORTED);
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}
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// }}}
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// {{{ quoteFloat()
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/**
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* Formats a float value for use within a query in a locale-independent
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* manner.
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*
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* @param float the float value to be quoted.
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* @return string the quoted string.
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* @see DB_common::quoteSmart()
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* @since Method available since release 1.7.8.
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*/
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function quoteFloat($float) {
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return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));
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}
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// }}}
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// {{{ escapeSimple()
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/**
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* Escapes a string according to the current DBMS's standards
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*
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* @param string $str the string to be escaped
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*
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* @return string the escaped string
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*
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* @see DB_common::quoteSmart()
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* @since Method available since Release 1.7.0
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*/
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|
function escapeSimple($str)
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|
{
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return addslashes($str);
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}
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// }}}
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// {{{ msqlRaiseError()
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|
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/**
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|
* Produces a DB_Error object regarding the current problem
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|
*
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|
* @param int $errno if the error is being manually raised pass a
|
|
* DB_ERROR* constant here. If this isn't passed
|
|
* the error information gathered from the DBMS.
|
|
*
|
|
* @return object the DB_Error object
|
|
*
|
|
* @see DB_common::raiseError(),
|
|
* DB_msql::errorNative(), DB_msql::errorCode()
|
|
*/
|
|
function msqlRaiseError($errno = null)
|
|
{
|
|
$native = $this->errorNative();
|
|
if ($errno === null) {
|
|
$errno = $this->errorCode($native);
|
|
}
|
|
return $this->raiseError($errno, null, null, null, $native);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorNative()
|
|
|
|
/**
|
|
* Gets the DBMS' native error message produced by the last query
|
|
*
|
|
* @return string the DBMS' error message
|
|
*/
|
|
function errorNative()
|
|
{
|
|
return @msql_error();
|
|
}
|
|
|
|
// }}}
|
|
// {{{ errorCode()
|
|
|
|
/**
|
|
* Determines PEAR::DB error code from the database's text error message
|
|
*
|
|
* @param string $errormsg the error message returned from the database
|
|
*
|
|
* @return integer the error number from a DB_ERROR* constant
|
|
*/
|
|
function errorCode($errormsg)
|
|
{
|
|
static $error_regexps;
|
|
|
|
// PHP 5.2+ prepends the function name to $php_errormsg, so we need
|
|
// this hack to work around it, per bug #9599.
|
|
$errormsg = preg_replace('/^msql[a-z_]+\(\): /', '', $errormsg);
|
|
|
|
if (!isset($error_regexps)) {
|
|
$error_regexps = array(
|
|
'/^Access to database denied/i'
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
|
'/^Bad index name/i'
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
|
'/^Bad order field/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Bad type for comparison/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Can\'t perform LIKE on/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Can\'t use TEXT fields in LIKE comparison/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Couldn\'t create temporary table/i'
|
|
=> DB_ERROR_CANNOT_CREATE,
|
|
'/^Error creating table file/i'
|
|
=> DB_ERROR_CANNOT_CREATE,
|
|
'/^Field .* cannot be null$/i'
|
|
=> DB_ERROR_CONSTRAINT_NOT_NULL,
|
|
'/^Index (field|condition) .* cannot be null$/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Invalid date format/i'
|
|
=> DB_ERROR_INVALID_DATE,
|
|
'/^Invalid time format/i'
|
|
=> DB_ERROR_INVALID,
|
|
'/^Literal value for .* is wrong type$/i'
|
|
=> DB_ERROR_INVALID_NUMBER,
|
|
'/^No Database Selected/i'
|
|
=> DB_ERROR_NODBSELECTED,
|
|
'/^No value specified for field/i'
|
|
=> DB_ERROR_VALUE_COUNT_ON_ROW,
|
|
'/^Non unique value for unique index/i'
|
|
=> DB_ERROR_CONSTRAINT,
|
|
'/^Out of memory for temporary table/i'
|
|
=> DB_ERROR_CANNOT_CREATE,
|
|
'/^Permission denied/i'
|
|
=> DB_ERROR_ACCESS_VIOLATION,
|
|
'/^Reference to un-selected table/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^syntax error/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
'/^Table .* exists$/i'
|
|
=> DB_ERROR_ALREADY_EXISTS,
|
|
'/^Unknown database/i'
|
|
=> DB_ERROR_NOSUCHDB,
|
|
'/^Unknown field/i'
|
|
=> DB_ERROR_NOSUCHFIELD,
|
|
'/^Unknown (index|system variable)/i'
|
|
=> DB_ERROR_NOT_FOUND,
|
|
'/^Unknown table/i'
|
|
=> DB_ERROR_NOSUCHTABLE,
|
|
'/^Unqualified field/i'
|
|
=> DB_ERROR_SYNTAX,
|
|
);
|
|
}
|
|
|
|
foreach ($error_regexps as $regexp => $code) {
|
|
if (preg_match($regexp, $errormsg)) {
|
|
return $code;
|
|
}
|
|
}
|
|
return DB_ERROR;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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)) {
|
|
/*
|
|
* Probably received a table name.
|
|
* Create a result resource identifier.
|
|
*/
|
|
$id = @msql_query("SELECT * FROM $result",
|
|
$this->connection);
|
|
$got_string = true;
|
|
} elseif (isset($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;
|
|
$got_string = false;
|
|
}
|
|
|
|
if (!is_resource($id)) {
|
|
return $this->raiseError(DB_ERROR_NEED_MORE_DATA);
|
|
}
|
|
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$count = @msql_num_fields($id);
|
|
$res = array();
|
|
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
for ($i = 0; $i < $count; $i++) {
|
|
$tmp = @msql_fetch_field($id);
|
|
|
|
$flags = '';
|
|
if ($tmp->not_null) {
|
|
$flags .= 'not_null ';
|
|
}
|
|
if ($tmp->unique) {
|
|
$flags .= 'unique_key ';
|
|
}
|
|
$flags = trim($flags);
|
|
|
|
$res[$i] = array(
|
|
'table' => $case_func($tmp->table),
|
|
'name' => $case_func($tmp->name),
|
|
'type' => $tmp->type,
|
|
'len' => msql_field_len($id, $i),
|
|
'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) {
|
|
@msql_free_result($id);
|
|
}
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ getSpecialQuery()
|
|
|
|
/**
|
|
* Obtain a list of a given type of objects
|
|
*
|
|
* @param string $type the kind of objects you want to retrieve
|
|
*
|
|
* @return array the array containing the list of objects requested
|
|
*
|
|
* @access protected
|
|
* @see DB_common::getListOf()
|
|
*/
|
|
function getSpecialQuery($type)
|
|
{
|
|
switch ($type) {
|
|
case 'databases':
|
|
$id = @msql_list_dbs($this->connection);
|
|
break;
|
|
case 'tables':
|
|
$id = @msql_list_tables($this->dsn['database'],
|
|
$this->connection);
|
|
break;
|
|
default:
|
|
return null;
|
|
}
|
|
if (!$id) {
|
|
return $this->msqlRaiseError();
|
|
}
|
|
$out = array();
|
|
while ($row = @msql_fetch_row($id)) {
|
|
$out[] = $row[0];
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
// }}}
|
|
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|
|
|
|
?>
|