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550 lines
17 KiB
PHP
550 lines
17 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Mysqli.php 16203 2009-06-21 18:56:17Z thomas $
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*/
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/**
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* @see Zend_Db_Adapter_Abstract
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*/
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require_once 'Zend/Db/Adapter/Abstract.php';
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/**
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* @see Zend_Db_Profiler
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*/
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require_once 'Zend/Db/Profiler.php';
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/**
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* @see Zend_Db_Select
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*/
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require_once 'Zend/Db/Select.php';
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/**
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* @see Zend_Db_Statement_Mysqli
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*/
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require_once 'Zend/Db/Statement/Mysqli.php';
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/**
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Db_Adapter_Mysqli extends Zend_Db_Adapter_Abstract
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{
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/**
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* Keys are UPPERCASE SQL datatypes or the constants
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* Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
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*
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* Values are:
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* 0 = 32-bit integer
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* 1 = 64-bit integer
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* 2 = float or decimal
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*
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* @var array Associative array of datatypes to values 0, 1, or 2.
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*/
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protected $_numericDataTypes = array(
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Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
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Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
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Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
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'INT' => Zend_Db::INT_TYPE,
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'INTEGER' => Zend_Db::INT_TYPE,
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'MEDIUMINT' => Zend_Db::INT_TYPE,
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'SMALLINT' => Zend_Db::INT_TYPE,
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'TINYINT' => Zend_Db::INT_TYPE,
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'BIGINT' => Zend_Db::BIGINT_TYPE,
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'SERIAL' => Zend_Db::BIGINT_TYPE,
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'DEC' => Zend_Db::FLOAT_TYPE,
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'DECIMAL' => Zend_Db::FLOAT_TYPE,
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'DOUBLE' => Zend_Db::FLOAT_TYPE,
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'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
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'FIXED' => Zend_Db::FLOAT_TYPE,
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'FLOAT' => Zend_Db::FLOAT_TYPE
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);
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/**
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* @var Zend_Db_Statement_Mysqli
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*/
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protected $_stmt = null;
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/**
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* Default class name for a DB statement.
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*
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* @var string
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*/
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protected $_defaultStmtClass = 'Zend_Db_Statement_Mysqli';
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/**
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* Quote a raw string.
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*
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* @param mixed $value Raw string
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*
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* @return string Quoted string
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*/
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protected function _quote($value)
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{
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if (is_int($value) || is_float($value)) {
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return $value;
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}
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$this->_connect();
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return "'" . $this->_connection->real_escape_string($value) . "'";
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}
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/**
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* Returns the symbol the adapter uses for delimiting identifiers.
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*
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* @return string
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*/
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public function getQuoteIdentifierSymbol()
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{
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return "`";
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}
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/**
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* Returns a list of the tables in the database.
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*
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* @return array
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*/
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public function listTables()
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{
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$result = array();
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// Use mysqli extension API, because SHOW doesn't work
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// well as a prepared statement on MySQL 4.1.
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$sql = 'SHOW TABLES';
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if ($queryResult = $this->getConnection()->query($sql)) {
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while ($row = $queryResult->fetch_row()) {
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$result[] = $row[0];
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}
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$queryResult->close();
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} else {
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception($this->getConnection()->error);
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}
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return $result;
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}
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/**
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* Returns the column descriptions for a table.
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*
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* The return value is an associative array keyed by the column name,
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* as returned by the RDBMS.
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*
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* The value of each array element is an associative array
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* with the following keys:
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*
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* SCHEMA_NAME => string; name of database or schema
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* TABLE_NAME => string;
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* COLUMN_NAME => string; column name
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* COLUMN_POSITION => number; ordinal position of column in table
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* DATA_TYPE => string; SQL datatype name of column
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* DEFAULT => string; default expression of column, null if none
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* NULLABLE => boolean; true if column can have nulls
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* LENGTH => number; length of CHAR/VARCHAR
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* SCALE => number; scale of NUMERIC/DECIMAL
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* PRECISION => number; precision of NUMERIC/DECIMAL
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* UNSIGNED => boolean; unsigned property of an integer type
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* PRIMARY => boolean; true if column is part of the primary key
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* PRIMARY_POSITION => integer; position of column in primary key
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* IDENTITY => integer; true if column is auto-generated with unique values
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*
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* @param string $tableName
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* @param string $schemaName OPTIONAL
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* @return array
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*/
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public function describeTable($tableName, $schemaName = null)
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{
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/**
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* @todo use INFORMATION_SCHEMA someday when
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* MySQL's implementation isn't too slow.
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*/
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if ($schemaName) {
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$sql = 'DESCRIBE ' . $this->quoteIdentifier("$schemaName.$tableName", true);
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} else {
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$sql = 'DESCRIBE ' . $this->quoteIdentifier($tableName, true);
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}
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/**
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* Use mysqli extension API, because DESCRIBE doesn't work
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* well as a prepared statement on MySQL 4.1.
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*/
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if ($queryResult = $this->getConnection()->query($sql)) {
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while ($row = $queryResult->fetch_assoc()) {
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$result[] = $row;
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}
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$queryResult->close();
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} else {
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception($this->getConnection()->error);
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}
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$desc = array();
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$row_defaults = array(
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'Length' => null,
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'Scale' => null,
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'Precision' => null,
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'Unsigned' => null,
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'Primary' => false,
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'PrimaryPosition' => null,
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'Identity' => false
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);
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$i = 1;
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$p = 1;
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foreach ($result as $key => $row) {
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$row = array_merge($row_defaults, $row);
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if (preg_match('/unsigned/', $row['Type'])) {
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$row['Unsigned'] = true;
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}
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if (preg_match('/^((?:var)?char)\((\d+)\)/', $row['Type'], $matches)) {
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$row['Type'] = $matches[1];
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$row['Length'] = $matches[2];
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} else if (preg_match('/^decimal\((\d+),(\d+)\)/', $row['Type'], $matches)) {
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$row['Type'] = 'decimal';
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$row['Precision'] = $matches[1];
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$row['Scale'] = $matches[2];
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} else if (preg_match('/^float\((\d+),(\d+)\)/', $row['Type'], $matches)) {
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$row['Type'] = 'float';
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$row['Precision'] = $matches[1];
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$row['Scale'] = $matches[2];
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} else if (preg_match('/^((?:big|medium|small|tiny)?int)\((\d+)\)/', $row['Type'], $matches)) {
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$row['Type'] = $matches[1];
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/**
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* The optional argument of a MySQL int type is not precision
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* or length; it is only a hint for display width.
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*/
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}
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if (strtoupper($row['Key']) == 'PRI') {
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$row['Primary'] = true;
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$row['PrimaryPosition'] = $p;
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if ($row['Extra'] == 'auto_increment') {
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$row['Identity'] = true;
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} else {
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$row['Identity'] = false;
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}
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++$p;
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}
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$desc[$this->foldCase($row['Field'])] = array(
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'SCHEMA_NAME' => null, // @todo
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'TABLE_NAME' => $this->foldCase($tableName),
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'COLUMN_NAME' => $this->foldCase($row['Field']),
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'COLUMN_POSITION' => $i,
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'DATA_TYPE' => $row['Type'],
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'DEFAULT' => $row['Default'],
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'NULLABLE' => (bool) ($row['Null'] == 'YES'),
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'LENGTH' => $row['Length'],
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'SCALE' => $row['Scale'],
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'PRECISION' => $row['Precision'],
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'UNSIGNED' => $row['Unsigned'],
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'PRIMARY' => $row['Primary'],
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'PRIMARY_POSITION' => $row['PrimaryPosition'],
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'IDENTITY' => $row['Identity']
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);
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++$i;
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}
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return $desc;
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}
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/**
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* Creates a connection to the database.
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*
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* @return void
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* @throws Zend_Db_Adapter_Mysqli_Exception
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*/
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protected function _connect()
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{
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if ($this->_connection) {
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return;
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}
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if (!extension_loaded('mysqli')) {
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception('The Mysqli extension is required for this adapter but the extension is not loaded');
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}
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if (isset($this->_config['port'])) {
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$port = (integer) $this->_config['port'];
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} else {
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$port = null;
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}
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$this->_connection = mysqli_init();
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if(!empty($this->_config['driver_options'])) {
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foreach($this->_config['driver_options'] as $option=>$value) {
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if(is_string($option)) {
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// Suppress warnings here
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// Ignore it if it's not a valid constant
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$option = @constant(strtoupper($option));
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if($option === null)
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continue;
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}
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mysqli_options($this->_connection, $option, $value);
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}
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}
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// Suppress connection warnings here.
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// Throw an exception instead.
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$_isConnected = @mysqli_real_connect(
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$this->_connection,
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$this->_config['host'],
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$this->_config['username'],
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$this->_config['password'],
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$this->_config['dbname'],
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$port
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);
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if ($_isConnected === false || mysqli_connect_errno()) {
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$this->closeConnection();
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception(mysqli_connect_error());
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}
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if (!empty($this->_config['charset'])) {
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mysqli_set_charset($this->_connection, $this->_config['charset']);
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}
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}
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/**
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* Test if a connection is active
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*
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* @return boolean
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*/
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public function isConnected()
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{
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return ((bool) ($this->_connection instanceof mysqli));
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}
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/**
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* Force the connection to close.
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*
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* @return void
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*/
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public function closeConnection()
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{
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if ($this->isConnected()) {
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$this->_connection->close();
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}
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$this->_connection = null;
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}
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/**
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* Prepare a statement and return a PDOStatement-like object.
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*
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* @param string $sql SQL query
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* @return Zend_Db_Statement_Mysqli
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*/
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public function prepare($sql)
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{
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$this->_connect();
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if ($this->_stmt) {
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$this->_stmt->close();
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}
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$stmtClass = $this->_defaultStmtClass;
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if (!class_exists($stmtClass)) {
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require_once 'Zend/Loader.php';
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Zend_Loader::loadClass($stmtClass);
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}
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$stmt = new $stmtClass($this, $sql);
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if ($stmt === false) {
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return false;
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}
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$stmt->setFetchMode($this->_fetchMode);
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$this->_stmt = $stmt;
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return $stmt;
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}
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/**
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* Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
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*
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* As a convention, on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
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* from the arguments and returns the last id generated by that sequence.
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* On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
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* returns the last value generated for such a column, and the table name
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* argument is disregarded.
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*
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* MySQL does not support sequences, so $tableName and $primaryKey are ignored.
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*
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* @param string $tableName OPTIONAL Name of table.
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* @param string $primaryKey OPTIONAL Name of primary key column.
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* @return string
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* @todo Return value should be int?
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*/
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public function lastInsertId($tableName = null, $primaryKey = null)
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{
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$mysqli = $this->_connection;
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return (string) $mysqli->insert_id;
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}
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/**
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* Begin a transaction.
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*
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* @return void
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*/
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protected function _beginTransaction()
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{
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$this->_connect();
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$this->_connection->autocommit(false);
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}
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/**
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* Commit a transaction.
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*
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* @return void
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*/
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protected function _commit()
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{
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$this->_connect();
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$this->_connection->commit();
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$this->_connection->autocommit(true);
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}
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/**
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* Roll-back a transaction.
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*
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* @return void
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*/
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protected function _rollBack()
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{
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$this->_connect();
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$this->_connection->rollback();
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$this->_connection->autocommit(true);
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}
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/**
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* Set the fetch mode.
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*
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* @param int $mode
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* @return void
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* @throws Zend_Db_Adapter_Mysqli_Exception
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*/
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public function setFetchMode($mode)
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{
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switch ($mode) {
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case Zend_Db::FETCH_LAZY:
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case Zend_Db::FETCH_ASSOC:
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case Zend_Db::FETCH_NUM:
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case Zend_Db::FETCH_BOTH:
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case Zend_Db::FETCH_NAMED:
|
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case Zend_Db::FETCH_OBJ:
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$this->_fetchMode = $mode;
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break;
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case Zend_Db::FETCH_BOUND: // bound to PHP variable
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception('FETCH_BOUND is not supported yet');
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break;
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default:
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
|
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*/
|
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception("Invalid fetch mode '$mode' specified");
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}
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}
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|
|
/**
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|
* Adds an adapter-specific LIMIT clause to the SELECT statement.
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|
*
|
|
* @param string $sql
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* @param int $count
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* @param int $offset OPTIONAL
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* @return string
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*/
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|
public function limit($sql, $count, $offset = 0)
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|
{
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|
$count = intval($count);
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if ($count <= 0) {
|
|
/**
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|
* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception("LIMIT argument count=$count is not valid");
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}
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$offset = intval($offset);
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if ($offset < 0) {
|
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/**
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* @see Zend_Db_Adapter_Mysqli_Exception
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*/
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require_once 'Zend/Db/Adapter/Mysqli/Exception.php';
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throw new Zend_Db_Adapter_Mysqli_Exception("LIMIT argument offset=$offset is not valid");
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}
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$sql .= " LIMIT $count";
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if ($offset > 0) {
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$sql .= " OFFSET $offset";
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}
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return $sql;
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}
|
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|
|
/**
|
|
* Check if the adapter supports real SQL parameters.
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|
*
|
|
* @param string $type 'positional' or 'named'
|
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* @return bool
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*/
|
|
public function supportsParameters($type)
|
|
{
|
|
switch ($type) {
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|
case 'positional':
|
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return true;
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case 'named':
|
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default:
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return false;
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}
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}
|
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|
|
/**
|
|
* Retrieve server version in PHP style
|
|
*
|
|
*@return string
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|
*/
|
|
public function getServerVersion()
|
|
{
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|
$this->_connect();
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|
$version = $this->_connection->server_version;
|
|
$major = (int) ($version / 10000);
|
|
$minor = (int) ($version % 10000 / 100);
|
|
$revision = (int) ($version % 100);
|
|
return $major . '.' . $minor . '.' . $revision;
|
|
}
|
|
}
|