1086 lines
34 KiB
PHP
1086 lines
34 KiB
PHP
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<?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 mysqli extension
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* for interacting with MySQL databases
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*
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* PHP versions 4 and 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 1997-2005 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: mysqli.php,v 1.79 2007/03/20 10:22:04 aharvey Exp $
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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 mysqli extension
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* for interacting with MySQL databases
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*
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* This is for MySQL versions 4.1 and above. Requires PHP 5.
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*
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* Note that persistent connections no longer exist.
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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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* @category Database
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* @package DB
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* @author Daniel Convissor <danielc@php.net>
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* @copyright 1997-2005 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: 1.7.11
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* @link http://pear.php.net/package/DB
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* @since Class functional since Release 1.6.3
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*/
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class DB_mysqli 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 = 'mysqli';
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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 = 'mysqli';
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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' => 'alter',
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'new_link' => false,
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'numrows' => true,
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'pconnect' => false,
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'prepare' => false,
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'ssl' => true,
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'transactions' => true,
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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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1004 => DB_ERROR_CANNOT_CREATE,
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1005 => DB_ERROR_CANNOT_CREATE,
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1006 => DB_ERROR_CANNOT_CREATE,
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1007 => DB_ERROR_ALREADY_EXISTS,
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1008 => DB_ERROR_CANNOT_DROP,
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1022 => DB_ERROR_ALREADY_EXISTS,
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1044 => DB_ERROR_ACCESS_VIOLATION,
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1046 => DB_ERROR_NODBSELECTED,
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1048 => DB_ERROR_CONSTRAINT,
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1049 => DB_ERROR_NOSUCHDB,
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1050 => DB_ERROR_ALREADY_EXISTS,
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1051 => DB_ERROR_NOSUCHTABLE,
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1054 => DB_ERROR_NOSUCHFIELD,
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1061 => DB_ERROR_ALREADY_EXISTS,
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1062 => DB_ERROR_ALREADY_EXISTS,
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1064 => DB_ERROR_SYNTAX,
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1091 => DB_ERROR_NOT_FOUND,
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1100 => DB_ERROR_NOT_LOCKED,
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1136 => DB_ERROR_VALUE_COUNT_ON_ROW,
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1142 => DB_ERROR_ACCESS_VIOLATION,
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1146 => DB_ERROR_NOSUCHTABLE,
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1216 => DB_ERROR_CONSTRAINT,
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1217 => DB_ERROR_CONSTRAINT,
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1356 => DB_ERROR_DIVZERO,
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1451 => DB_ERROR_CONSTRAINT,
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1452 => DB_ERROR_CONSTRAINT,
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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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* Should data manipulation queries be committed automatically?
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* @var bool
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* @access private
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*/
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var $autocommit = true;
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/**
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* The quantity of transactions begun
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*
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* {@internal While this is private, it can't actually be designated
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* private in PHP 5 because it is directly accessed in the test suite.}}
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*
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* @var integer
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* @access private
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*/
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var $transaction_opcount = 0;
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/**
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* The database specified in the DSN
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*
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* It's a fix to allow calls to different databases in the same script.
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*
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* @var string
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* @access private
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*/
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var $_db = '';
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/**
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* Array for converting MYSQLI_*_FLAG constants to text values
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* @var array
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* @access public
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* @since Property available since Release 1.6.5
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*/
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var $mysqli_flags = array(
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MYSQLI_NOT_NULL_FLAG => 'not_null',
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MYSQLI_PRI_KEY_FLAG => 'primary_key',
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MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
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MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
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MYSQLI_BLOB_FLAG => 'blob',
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MYSQLI_UNSIGNED_FLAG => 'unsigned',
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MYSQLI_ZEROFILL_FLAG => 'zerofill',
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MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
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MYSQLI_TIMESTAMP_FLAG => 'timestamp',
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MYSQLI_SET_FLAG => 'set',
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// MYSQLI_NUM_FLAG => 'numeric', // unnecessary
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// MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
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MYSQLI_GROUP_FLAG => 'group_by'
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);
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/**
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* Array for converting MYSQLI_TYPE_* constants to text values
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* @var array
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* @access public
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* @since Property available since Release 1.6.5
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*/
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var $mysqli_types = array(
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MYSQLI_TYPE_DECIMAL => 'decimal',
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MYSQLI_TYPE_TINY => 'tinyint',
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MYSQLI_TYPE_SHORT => 'int',
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MYSQLI_TYPE_LONG => 'int',
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MYSQLI_TYPE_FLOAT => 'float',
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MYSQLI_TYPE_DOUBLE => 'double',
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// MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
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MYSQLI_TYPE_TIMESTAMP => 'timestamp',
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MYSQLI_TYPE_LONGLONG => 'bigint',
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MYSQLI_TYPE_INT24 => 'mediumint',
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MYSQLI_TYPE_DATE => 'date',
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MYSQLI_TYPE_TIME => 'time',
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MYSQLI_TYPE_DATETIME => 'datetime',
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MYSQLI_TYPE_YEAR => 'year',
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MYSQLI_TYPE_NEWDATE => 'date',
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MYSQLI_TYPE_ENUM => 'enum',
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MYSQLI_TYPE_SET => 'set',
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MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
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MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
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MYSQLI_TYPE_LONG_BLOB => 'longblob',
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MYSQLI_TYPE_BLOB => 'blob',
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MYSQLI_TYPE_VAR_STRING => 'varchar',
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MYSQLI_TYPE_STRING => 'char',
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MYSQLI_TYPE_GEOMETRY => 'geometry',
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/* These constants are conditionally compiled in ext/mysqli, so we'll
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* define them by number rather than constant. */
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16 => 'bit',
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246 => 'decimal',
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);
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// }}}
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// {{{ constructor
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/**
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* This constructor calls <kbd>$this->DB_common()</kbd>
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*
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* @return void
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*/
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function DB_mysqli()
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{
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$this->DB_common();
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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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* PEAR DB's mysqli driver supports the following extra DSN options:
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* + When the 'ssl' $option passed to DB::connect() is true:
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* + key The path to the key file.
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* + cert The path to the certificate file.
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* + ca The path to the certificate authority file.
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* + capath The path to a directory that contains trusted SSL
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* CA certificates in pem format.
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* + cipher The list of allowable ciphers for SSL encryption.
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*
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* Example of how to connect using SSL:
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* <code>
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* require_once 'DB.php';
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*
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* $dsn = array(
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* 'phptype' => 'mysqli',
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* 'username' => 'someuser',
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* 'password' => 'apasswd',
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* 'hostspec' => 'localhost',
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* 'database' => 'thedb',
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* 'key' => 'client-key.pem',
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* 'cert' => 'client-cert.pem',
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* 'ca' => 'cacert.pem',
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* 'capath' => '/path/to/ca/dir',
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* 'cipher' => 'AES',
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* );
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*
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* $options = array(
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* 'ssl' => true,
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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('mysqli')) {
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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 = $dsn['dbsyntax'];
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}
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$ini = ini_get('track_errors');
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@ini_set('track_errors', 1);
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$php_errormsg = '';
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if (((int) $this->getOption('ssl')) === 1) {
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$init = mysqli_init();
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mysqli_ssl_set(
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$init,
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empty($dsn['key']) ? null : $dsn['key'],
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empty($dsn['cert']) ? null : $dsn['cert'],
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empty($dsn['ca']) ? null : $dsn['ca'],
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empty($dsn['capath']) ? null : $dsn['capath'],
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empty($dsn['cipher']) ? null : $dsn['cipher']
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);
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if ($this->connection = @mysqli_real_connect(
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$init,
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$dsn['hostspec'],
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$dsn['username'],
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$dsn['password'],
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$dsn['database'],
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$dsn['port'],
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$dsn['socket']))
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{
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$this->connection = $init;
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}
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} else {
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$this->connection = @mysqli_connect(
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$dsn['hostspec'],
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$dsn['username'],
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$dsn['password'],
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$dsn['database'],
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$dsn['port'],
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$dsn['socket']
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);
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}
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|
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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 = @mysqli_connect_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 $this->raiseError(DB_ERROR_CONNECT_FAILED,
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|
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null, null, null,
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$php_errormsg);
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}
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||
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}
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if ($dsn['database']) {
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$this->_db = $dsn['database'];
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}
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return DB_OK;
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}
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||
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// }}}
|
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|
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// {{{ disconnect()
|
||
|
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|
||
|
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/**
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||
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* Disconnects from the database server
|
||
|
|
*
|
||
|
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* @return bool TRUE on success, FALSE on failure
|
||
|
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*/
|
||
|
|
function disconnect()
|
||
|
|
{
|
||
|
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$ret = @mysqli_close($this->connection);
|
||
|
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$this->connection = null;
|
||
|
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return $ret;
|
||
|
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}
|
||
|
|
|
||
|
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// }}}
|
||
|
|
// {{{ simpleQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sends a query to the database server
|
||
|
|
*
|
||
|
|
* @param string the SQL query string
|
||
|
|
*
|
||
|
|
* @return mixed + a PHP result resrouce for successful SELECT queries
|
||
|
|
* + the DB_OK constant for other successful queries
|
||
|
|
* + a DB_Error object on failure
|
||
|
|
*/
|
||
|
|
function simpleQuery($query)
|
||
|
|
{
|
||
|
|
$ismanip = $this->_checkManip($query);
|
||
|
|
$this->last_query = $query;
|
||
|
|
$query = $this->modifyQuery($query);
|
||
|
|
if ($this->_db) {
|
||
|
|
if (!@mysqli_select_db($this->connection, $this->_db)) {
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!$this->autocommit && $ismanip) {
|
||
|
|
if ($this->transaction_opcount == 0) {
|
||
|
|
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=0');
|
||
|
|
$result = @mysqli_query($this->connection, 'BEGIN');
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->transaction_opcount++;
|
||
|
|
}
|
||
|
|
$result = @mysqli_query($this->connection, $query);
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
if (is_object($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextResult()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Move the internal mysql result pointer to the next available result.
|
||
|
|
*
|
||
|
|
* This method has not been implemented yet.
|
||
|
|
*
|
||
|
|
* @param resource $result a valid sql result resource
|
||
|
|
* @return false
|
||
|
|
* @access public
|
||
|
|
*/
|
||
|
|
function nextResult($result)
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ fetchInto()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Places a row from the result set into the given array
|
||
|
|
*
|
||
|
|
* Formating of the array and the data therein are configurable.
|
||
|
|
* See DB_result::fetchInto() for more information.
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::fetchInto() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result the query result resource
|
||
|
|
* @param array $arr the referenced array to put the data in
|
||
|
|
* @param int $fetchmode how the resulting array should be indexed
|
||
|
|
* @param int $rownum the row number to fetch (0 = first row)
|
||
|
|
*
|
||
|
|
* @return mixed DB_OK on success, NULL when the end of a result set is
|
||
|
|
* reached or on failure
|
||
|
|
*
|
||
|
|
* @see DB_result::fetchInto()
|
||
|
|
*/
|
||
|
|
function fetchInto($result, &$arr, $fetchmode, $rownum = null)
|
||
|
|
{
|
||
|
|
if ($rownum !== null) {
|
||
|
|
if (!@mysqli_data_seek($result, $rownum)) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($fetchmode & DB_FETCHMODE_ASSOC) {
|
||
|
|
$arr = @mysqli_fetch_array($result, MYSQLI_ASSOC);
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
|
||
|
|
$arr = array_change_key_case($arr, CASE_LOWER);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$arr = @mysqli_fetch_row($result);
|
||
|
|
}
|
||
|
|
if (!$arr) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
|
||
|
|
/*
|
||
|
|
* Even though this DBMS already trims output, we do this because
|
||
|
|
* a field might have intentional whitespace at the end that
|
||
|
|
* gets removed by DB_PORTABILITY_RTRIM under another driver.
|
||
|
|
*/
|
||
|
|
$this->_rtrimArrayValues($arr);
|
||
|
|
}
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
|
||
|
|
$this->_convertNullArrayValuesToEmpty($arr);
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ freeResult()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes the result set and frees the memory occupied by the result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::free() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return bool TRUE on success, FALSE if $result is invalid
|
||
|
|
*
|
||
|
|
* @see DB_result::free()
|
||
|
|
*/
|
||
|
|
function freeResult($result)
|
||
|
|
{
|
||
|
|
return is_resource($result) ? mysqli_free_result($result) : false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numCols()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of columns in a result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::numCols() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return int the number of columns. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_result::numCols()
|
||
|
|
*/
|
||
|
|
function numCols($result)
|
||
|
|
{
|
||
|
|
$cols = @mysqli_num_fields($result);
|
||
|
|
if (!$cols) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
return $cols;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of rows in a result set
|
||
|
|
*
|
||
|
|
* This method is not meant to be called directly. Use
|
||
|
|
* DB_result::numRows() instead. It can't be declared "protected"
|
||
|
|
* because DB_result is a separate object.
|
||
|
|
*
|
||
|
|
* @param resource $result PHP's query result resource
|
||
|
|
*
|
||
|
|
* @return int the number of rows. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_result::numRows()
|
||
|
|
*/
|
||
|
|
function numRows($result)
|
||
|
|
{
|
||
|
|
$rows = @mysqli_num_rows($result);
|
||
|
|
if ($rows === null) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
return $rows;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ autoCommit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enables or disables automatic commits
|
||
|
|
*
|
||
|
|
* @param bool $onoff true turns it on, false turns it off
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object if the driver
|
||
|
|
* doesn't support auto-committing transactions.
|
||
|
|
*/
|
||
|
|
function autoCommit($onoff = false)
|
||
|
|
{
|
||
|
|
// XXX if $this->transaction_opcount > 0, we should probably
|
||
|
|
// issue a warning here.
|
||
|
|
$this->autocommit = $onoff ? true : false;
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ commit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Commits the current transaction
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function commit()
|
||
|
|
{
|
||
|
|
if ($this->transaction_opcount > 0) {
|
||
|
|
if ($this->_db) {
|
||
|
|
if (!@mysqli_select_db($this->connection, $this->_db)) {
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$result = @mysqli_query($this->connection, 'COMMIT');
|
||
|
|
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ rollback()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reverts the current transaction
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function rollback()
|
||
|
|
{
|
||
|
|
if ($this->transaction_opcount > 0) {
|
||
|
|
if ($this->_db) {
|
||
|
|
if (!@mysqli_select_db($this->connection, $this->_db)) {
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$result = @mysqli_query($this->connection, 'ROLLBACK');
|
||
|
|
$result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqliRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ affectedRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines the number of rows affected by a data maniuplation query
|
||
|
|
*
|
||
|
|
* 0 is returned for queries that don't manipulate data.
|
||
|
|
*
|
||
|
|
* @return int the number of rows. A DB_Error object on failure.
|
||
|
|
*/
|
||
|
|
function affectedRows()
|
||
|
|
{
|
||
|
|
if ($this->_last_query_manip) {
|
||
|
|
return @mysqli_affected_rows($this->connection);
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextId()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the next free id in a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence
|
||
|
|
* @param boolean $ondemand when true, the seqence is automatically
|
||
|
|
* created if it does not exist
|
||
|
|
*
|
||
|
|
* @return int the next id number in the sequence.
|
||
|
|
* A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::nextID(), DB_common::getSequenceName(),
|
||
|
|
* DB_mysqli::createSequence(), DB_mysqli::dropSequence()
|
||
|
|
*/
|
||
|
|
function nextId($seq_name, $ondemand = true)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
do {
|
||
|
|
$repeat = 0;
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result = $this->query('UPDATE ' . $seqname
|
||
|
|
. ' SET id = LAST_INSERT_ID(id + 1)');
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if ($result === DB_OK) {
|
||
|
|
// COMMON CASE
|
||
|
|
$id = @mysqli_insert_id($this->connection);
|
||
|
|
if ($id != 0) {
|
||
|
|
return $id;
|
||
|
|
}
|
||
|
|
|
||
|
|
// EMPTY SEQ TABLE
|
||
|
|
// Sequence table must be empty for some reason,
|
||
|
|
// so fill it and return 1
|
||
|
|
// Obtain a user-level lock
|
||
|
|
$result = $this->getOne('SELECT GET_LOCK('
|
||
|
|
. "'${seqname}_lock', 10)");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
if ($result == 0) {
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NOT_LOCKED);
|
||
|
|
}
|
||
|
|
|
||
|
|
// add the default value
|
||
|
|
$result = $this->query('REPLACE INTO ' . $seqname
|
||
|
|
. ' (id) VALUES (0)');
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Release the lock
|
||
|
|
$result = $this->getOne('SELECT RELEASE_LOCK('
|
||
|
|
. "'${seqname}_lock')");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
// We know what the result will be, so no need to try again
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
} elseif ($ondemand && DB::isError($result) &&
|
||
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE)
|
||
|
|
{
|
||
|
|
// ONDEMAND TABLE CREATION
|
||
|
|
$result = $this->createSequence($seq_name);
|
||
|
|
|
||
|
|
// Since createSequence initializes the ID to be 1,
|
||
|
|
// we do not need to retrieve the ID again (or we will get 2)
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
} else {
|
||
|
|
// First ID of a newly created sequence is 1
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
} elseif (DB::isError($result) &&
|
||
|
|
$result->getCode() == DB_ERROR_ALREADY_EXISTS)
|
||
|
|
{
|
||
|
|
// BACKWARDS COMPAT
|
||
|
|
// see _BCsequence() comment
|
||
|
|
$result = $this->_BCsequence($seqname);
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
$repeat = 1;
|
||
|
|
}
|
||
|
|
} while ($repeat);
|
||
|
|
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a new sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the new sequence
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::createSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_mysqli::nextID(), DB_mysqli::dropSequence()
|
||
|
|
*/
|
||
|
|
function createSequence($seq_name)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
$res = $this->query('CREATE TABLE ' . $seqname
|
||
|
|
. ' (id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'
|
||
|
|
. ' PRIMARY KEY(id))');
|
||
|
|
if (DB::isError($res)) {
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
// insert yields value 1, nextId call will generate ID 2
|
||
|
|
return $this->query("INSERT INTO ${seqname} (id) VALUES (0)");
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ dropSequence()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Deletes a sequence
|
||
|
|
*
|
||
|
|
* @param string $seq_name name of the sequence to be deleted
|
||
|
|
*
|
||
|
|
* @return int DB_OK on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::dropSequence(), DB_common::getSequenceName(),
|
||
|
|
* DB_mysql::nextID(), DB_mysql::createSequence()
|
||
|
|
*/
|
||
|
|
function dropSequence($seq_name)
|
||
|
|
{
|
||
|
|
return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ _BCsequence()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Backwards compatibility with old sequence emulation implementation
|
||
|
|
* (clean up the dupes)
|
||
|
|
*
|
||
|
|
* @param string $seqname the sequence name to clean up
|
||
|
|
*
|
||
|
|
* @return bool true on success. A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _BCsequence($seqname)
|
||
|
|
{
|
||
|
|
// Obtain a user-level lock... this will release any previous
|
||
|
|
// application locks, but unlike LOCK TABLES, it does not abort
|
||
|
|
// the current transaction and is much less frequently used.
|
||
|
|
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
if ($result == 0) {
|
||
|
|
// Failed to get the lock, can't do the conversion, bail
|
||
|
|
// with a DB_ERROR_NOT_LOCKED error
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NOT_LOCKED);
|
||
|
|
}
|
||
|
|
|
||
|
|
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}");
|
||
|
|
if (DB::isError($highest_id)) {
|
||
|
|
return $highest_id;
|
||
|
|
}
|
||
|
|
|
||
|
|
// This should kill all rows except the highest
|
||
|
|
// We should probably do something if $highest_id isn't
|
||
|
|
// numeric, but I'm at a loss as how to handle that...
|
||
|
|
$result = $this->query('DELETE FROM ' . $seqname
|
||
|
|
. " WHERE id <> $highest_id");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If another thread has been waiting for this lock,
|
||
|
|
// it will go thru the above procedure, but will have no
|
||
|
|
// real effect
|
||
|
|
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ quoteIdentifier()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Quotes a string so it can be safely used as a table or column name
|
||
|
|
* (WARNING: using names that require this is a REALLY BAD IDEA)
|
||
|
|
*
|
||
|
|
* WARNING: Older versions of MySQL can't handle the backtick
|
||
|
|
* character (<kbd>`</kbd>) in table or column names.
|
||
|
|
*
|
||
|
|
* @param string $str identifier name to be quoted
|
||
|
|
*
|
||
|
|
* @return string quoted identifier string
|
||
|
|
*
|
||
|
|
* @see DB_common::quoteIdentifier()
|
||
|
|
* @since Method available since Release 1.6.0
|
||
|
|
*/
|
||
|
|
function quoteIdentifier($str)
|
||
|
|
{
|
||
|
|
return '`' . str_replace('`', '``', $str) . '`';
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ escapeSimple()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escapes a string according to the current DBMS's standards
|
||
|
|
*
|
||
|
|
* @param string $str the string to be escaped
|
||
|
|
*
|
||
|
|
* @return string the escaped string
|
||
|
|
*
|
||
|
|
* @see DB_common::quoteSmart()
|
||
|
|
* @since Method available since Release 1.6.0
|
||
|
|
*/
|
||
|
|
function escapeSimple($str)
|
||
|
|
{
|
||
|
|
return @mysqli_real_escape_string($this->connection, $str);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ modifyLimitQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds LIMIT clauses to a query string according to current DBMS standards
|
||
|
|
*
|
||
|
|
* @param string $query the query to modify
|
||
|
|
* @param int $from the row to start to fetching (0 = the first row)
|
||
|
|
* @param int $count the numbers of rows to fetch
|
||
|
|
* @param mixed $params array, string or numeric data to be used in
|
||
|
|
* execution of the statement. Quantity of items
|
||
|
|
* passed must match quantity of placeholders in
|
||
|
|
* query: meaning 1 placeholder for non-array
|
||
|
|
* parameters or 1 placeholder per array element.
|
||
|
|
*
|
||
|
|
* @return string the query string with LIMIT clauses added
|
||
|
|
*
|
||
|
|
* @access protected
|
||
|
|
*/
|
||
|
|
function modifyLimitQuery($query, $from, $count, $params = array())
|
||
|
|
{
|
||
|
|
if (DB::isManip($query) || $this->_next_query_manip) {
|
||
|
|
return $query . " LIMIT $count";
|
||
|
|
} else {
|
||
|
|
return $query . " LIMIT $from, $count";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ mysqliRaiseError()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Produces a DB_Error object regarding the current problem
|
||
|
|
*
|
||
|
|
* @param int $errno if the error is being manually raised pass a
|
||
|
|
* DB_ERROR* constant here. If this isn't passed
|
||
|
|
* the error information gathered from the DBMS.
|
||
|
|
*
|
||
|
|
* @return object the DB_Error object
|
||
|
|
*
|
||
|
|
* @see DB_common::raiseError(),
|
||
|
|
* DB_mysqli::errorNative(), DB_common::errorCode()
|
||
|
|
*/
|
||
|
|
function mysqliRaiseError($errno = null)
|
||
|
|
{
|
||
|
|
if ($errno === null) {
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_ERRORS) {
|
||
|
|
$this->errorcode_map[1022] = DB_ERROR_CONSTRAINT;
|
||
|
|
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT_NOT_NULL;
|
||
|
|
$this->errorcode_map[1062] = DB_ERROR_CONSTRAINT;
|
||
|
|
} else {
|
||
|
|
// Doing this in case mode changes during runtime.
|
||
|
|
$this->errorcode_map[1022] = DB_ERROR_ALREADY_EXISTS;
|
||
|
|
$this->errorcode_map[1048] = DB_ERROR_CONSTRAINT;
|
||
|
|
$this->errorcode_map[1062] = DB_ERROR_ALREADY_EXISTS;
|
||
|
|
}
|
||
|
|
$errno = $this->errorCode(mysqli_errno($this->connection));
|
||
|
|
}
|
||
|
|
return $this->raiseError($errno, null, null, null,
|
||
|
|
@mysqli_errno($this->connection) . ' ** ' .
|
||
|
|
@mysqli_error($this->connection));
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ errorNative()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the DBMS' native error code produced by the last query
|
||
|
|
*
|
||
|
|
* @return int the DBMS' error code
|
||
|
|
*/
|
||
|
|
function errorNative()
|
||
|
|
{
|
||
|
|
return @mysqli_errno($this->connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ tableInfo()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns information about a table or a result set
|
||
|
|
*
|
||
|
|
* @param object|string $result DB_result object from a query or a
|
||
|
|
* string containing the name of a table.
|
||
|
|
* While this also accepts a query result
|
||
|
|
* resource identifier, this behavior is
|
||
|
|
* deprecated.
|
||
|
|
* @param int $mode a valid tableInfo mode
|
||
|
|
*
|
||
|
|
* @return array an associative array with the information requested.
|
||
|
|
* A DB_Error object on failure.
|
||
|
|
*
|
||
|
|
* @see DB_common::setOption()
|
||
|
|
*/
|
||
|
|
function tableInfo($result, $mode = null)
|
||
|
|
{
|
||
|
|
if (is_string($result)) {
|
||
|
|
/*
|
||
|
|
* Probably received a table name.
|
||
|
|
* Create a result resource identifier.
|
||
|
|
*/
|
||
|
|
$id = @mysqli_query($this->connection,
|
||
|
|
"SELECT * FROM $result LIMIT 0");
|
||
|
|
$got_string = true;
|
||
|
|
} elseif (isset($result->result)) {
|
||
|
|
/*
|
||
|
|
* Probably received a result object.
|
||
|
|
* Extract the result resource identifier.
|
||
|
|
*/
|
||
|
|
$id = $result->result;
|
||
|
|
$got_string = false;
|
||
|
|
} else {
|
||
|
|
/*
|
||
|
|
* Probably received a result resource identifier.
|
||
|
|
* Copy it.
|
||
|
|
* Deprecated. Here for compatibility only.
|
||
|
|
*/
|
||
|
|
$id = $result;
|
||
|
|
$got_string = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!is_a($id, 'mysqli_result')) {
|
||
|
|
return $this->mysqliRaiseError(DB_ERROR_NEED_MORE_DATA);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
|
||
|
|
$case_func = 'strtolower';
|
||
|
|
} else {
|
||
|
|
$case_func = 'strval';
|
||
|
|
}
|
||
|
|
|
||
|
|
$count = @mysqli_num_fields($id);
|
||
|
|
$res = array();
|
||
|
|
|
||
|
|
if ($mode) {
|
||
|
|
$res['num_fields'] = $count;
|
||
|
|
}
|
||
|
|
|
||
|
|
for ($i = 0; $i < $count; $i++) {
|
||
|
|
$tmp = @mysqli_fetch_field($id);
|
||
|
|
|
||
|
|
$flags = '';
|
||
|
|
foreach ($this->mysqli_flags as $const => $means) {
|
||
|
|
if ($tmp->flags & $const) {
|
||
|
|
$flags .= $means . ' ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($tmp->def) {
|
||
|
|
$flags .= 'default_' . rawurlencode($tmp->def);
|
||
|
|
}
|
||
|
|
$flags = trim($flags);
|
||
|
|
|
||
|
|
$res[$i] = array(
|
||
|
|
'table' => $case_func($tmp->table),
|
||
|
|
'name' => $case_func($tmp->name),
|
||
|
|
'type' => isset($this->mysqli_types[$tmp->type])
|
||
|
|
? $this->mysqli_types[$tmp->type]
|
||
|
|
: 'unknown',
|
||
|
|
// http://bugs.php.net/?id=36579
|
||
|
|
'len' => $tmp->length,
|
||
|
|
'flags' => $flags,
|
||
|
|
);
|
||
|
|
|
||
|
|
if ($mode & DB_TABLEINFO_ORDER) {
|
||
|
|
$res['order'][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) {
|
||
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// free the result only if we were called on a table
|
||
|
|
if ($got_string) {
|
||
|
|
@mysqli_free_result($id);
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ getSpecialQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Obtains the query string needed for listing a given type of objects
|
||
|
|
*
|
||
|
|
* @param string $type the kind of objects you want to retrieve
|
||
|
|
*
|
||
|
|
* @return string the SQL query string or null if the driver doesn't
|
||
|
|
* support the object type requested
|
||
|
|
*
|
||
|
|
* @access protected
|
||
|
|
* @see DB_common::getListOf()
|
||
|
|
*/
|
||
|
|
function getSpecialQuery($type)
|
||
|
|
{
|
||
|
|
switch ($type) {
|
||
|
|
case 'tables':
|
||
|
|
return 'SHOW TABLES';
|
||
|
|
case 'users':
|
||
|
|
return 'SELECT DISTINCT User FROM mysql.user';
|
||
|
|
case 'databases':
|
||
|
|
return 'SHOW DATABASES';
|
||
|
|
default:
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Local variables:
|
||
|
|
* tab-width: 4
|
||
|
|
* c-basic-offset: 4
|
||
|
|
* End:
|
||
|
|
*/
|
||
|
|
|
||
|
|
?>
|