/cake/libs/model/datasources/dbo/dbo_mysqli.php
PHP | 332 lines | 175 code | 30 blank | 127 comment | 47 complexity | f7357918fe38737fd78a890dccbd9182 MD5 | raw file
- <?php
- /**
- * MySQLi layer for DBO
- *
- * PHP versions 4 and 5
- *
- * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
- * Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
- *
- * Licensed under The MIT License
- * Redistributions of files must retain the above copyright notice.
- *
- * @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
- * @link http://cakephp.org CakePHP(tm) Project
- * @package cake
- * @subpackage cake.cake.libs.model.datasources.dbo
- * @since CakePHP(tm) v 1.1.4.2974
- * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
- */
- App::import('Datasource', 'DboMysql');
- /**
- * MySQLi DBO driver object
- *
- * Provides connection and SQL generation for MySQL RDMS using PHP's MySQLi Interface
- *
- * @package cake
- * @subpackage cake.cake.libs.model.datasources.dbo
- */
- class DboMysqli extends DboMysqlBase {
- /**
- * Datasource Description
- *
- * @var string
- */
- var $description = "Mysqli DBO Driver";
- /**
- * Base configuration settings for Mysqli driver
- *
- * @var array
- */
- var $_baseConfig = array(
- 'persistent' => true,
- 'host' => 'localhost',
- 'login' => 'root',
- 'password' => '',
- 'database' => 'cake',
- 'port' => '3306',
- 'socket' => null
- );
- /**
- * Connects to the database using options in the given configuration array.
- *
- * @return boolean True if the database could be connected, else false
- */
- function connect() {
- $config = $this->config;
- $this->connected = false;
- $this->connection = mysqli_connect($config['host'], $config['login'], $config['password'], $config['database'], $config['port'], $config['socket']);
- if ($this->connection !== false) {
- $this->connected = true;
- }
- $this->_useAlias = (bool)version_compare(mysqli_get_server_info($this->connection), "4.1", ">=");
- if (!empty($config['encoding'])) {
- $this->setEncoding($config['encoding']);
- }
- return $this->connected;
- }
- /**
- * Check that MySQLi is installed/enabled
- *
- * @return boolean
- */
- function enabled() {
- return extension_loaded('mysqli');
- }
- /**
- * Disconnects from database.
- *
- * @return boolean True if the database could be disconnected, else false
- */
- function disconnect() {
- if (isset($this->results) && is_resource($this->results)) {
- mysqli_free_result($this->results);
- }
- $this->connected = !@mysqli_close($this->connection);
- return !$this->connected;
- }
- /**
- * Executes given SQL statement.
- *
- * @param string $sql SQL statement
- * @return resource Result resource identifier
- * @access protected
- */
- function _execute($sql) {
- if (preg_match('/^\s*call/i', $sql)) {
- return $this->_executeProcedure($sql);
- }
- return mysqli_query($this->connection, $sql);
- }
- /**
- * Executes given SQL statement (procedure call).
- *
- * @param string $sql SQL statement (procedure call)
- * @return resource Result resource identifier for first recordset
- * @access protected
- */
- function _executeProcedure($sql) {
- $answer = mysqli_multi_query($this->connection, $sql);
- $firstResult = mysqli_store_result($this->connection);
- if (mysqli_more_results($this->connection)) {
- while ($lastResult = mysqli_next_result($this->connection));
- }
- return $firstResult;
- }
- /**
- * Returns an array of sources (tables) in the database.
- *
- * @return array Array of tablenames in the database
- */
- function listSources() {
- $cache = parent::listSources();
- if ($cache !== null) {
- return $cache;
- }
- $result = $this->_execute('SHOW TABLES FROM ' . $this->name($this->config['database']) . ';');
- if (!$result) {
- return array();
- }
- $tables = array();
- while ($line = mysqli_fetch_row($result)) {
- $tables[] = $line[0];
- }
- parent::listSources($tables);
- return $tables;
- }
- /**
- * Returns a quoted and escaped string of $data for use in an SQL statement.
- *
- * @param string $data String to be prepared for use in an SQL statement
- * @param string $column The column into which this data will be inserted
- * @param boolean $safe Whether or not numeric data should be handled automagically if no column data is provided
- * @return string Quoted and escaped data
- */
- function value($data, $column = null, $safe = false) {
- $parent = parent::value($data, $column, $safe);
- if ($parent != null) {
- return $parent;
- }
- if ($data === null || (is_array($data) && empty($data))) {
- return 'NULL';
- }
- if ($data === '' && $column !== 'integer' && $column !== 'float' && $column !== 'boolean') {
- return "''";
- }
- if (empty($column)) {
- $column = $this->introspectType($data);
- }
- switch ($column) {
- case 'boolean':
- return $this->boolean((bool)$data);
- break;
- case 'integer' :
- case 'float' :
- case null :
- if ($data === '') {
- return 'NULL';
- }
- if ((is_int($data) || is_float($data) || $data === '0') || (
- is_numeric($data) && strpos($data, ',') === false &&
- $data[0] != '0' && strpos($data, 'e') === false)) {
- return $data;
- }
- default:
- $data = "'" . mysqli_real_escape_string($this->connection, $data) . "'";
- break;
- }
- return $data;
- }
- /**
- * Returns a formatted error message from previous database operation.
- *
- * @return string Error message with error number
- */
- function lastError() {
- if (mysqli_errno($this->connection)) {
- return mysqli_errno($this->connection).': '.mysqli_error($this->connection);
- }
- return null;
- }
- /**
- * Returns number of affected rows in previous database operation. If no previous operation exists,
- * this returns false.
- *
- * @return integer Number of affected rows
- */
- function lastAffected() {
- if ($this->_result) {
- return mysqli_affected_rows($this->connection);
- }
- return null;
- }
- /**
- * Returns number of rows in previous resultset. If no previous resultset exists,
- * this returns false.
- *
- * @return integer Number of rows in resultset
- */
- function lastNumRows() {
- if ($this->hasResult()) {
- return mysqli_num_rows($this->_result);
- }
- return null;
- }
- /**
- * Returns the ID generated from the previous INSERT operation.
- *
- * @param unknown_type $source
- * @return in
- */
- function lastInsertId($source = null) {
- $id = $this->fetchRow('SELECT LAST_INSERT_ID() AS insertID', false);
- if ($id !== false && !empty($id) && !empty($id[0]) && isset($id[0]['insertID'])) {
- return $id[0]['insertID'];
- }
- return null;
- }
- /**
- * Enter description here...
- *
- * @param unknown_type $results
- */
- function resultSet(&$results) {
- if (isset($this->results) && is_resource($this->results) && $this->results != $results) {
- mysqli_free_result($this->results);
- }
- $this->results =& $results;
- $this->map = array();
- $numFields = mysqli_num_fields($results);
- $index = 0;
- $j = 0;
- while ($j < $numFields) {
- $column = mysqli_fetch_field_direct($results, $j);
- if (!empty($column->table)) {
- $this->map[$index++] = array($column->table, $column->name);
- } else {
- $this->map[$index++] = array(0, $column->name);
- }
- $j++;
- }
- }
- /**
- * Fetches the next row from the current result set
- *
- * @return unknown
- */
- function fetchResult() {
- if ($row = mysqli_fetch_row($this->results)) {
- $resultRow = array();
- foreach ($row as $index => $field) {
- $table = $column = null;
- if (count($this->map[$index]) === 2) {
- list($table, $column) = $this->map[$index];
- }
- $resultRow[$table][$column] = $row[$index];
- }
- return $resultRow;
- }
- return false;
- }
- /**
- * Gets the database encoding
- *
- * @return string The database encoding
- */
- function getEncoding() {
- return mysqli_client_encoding($this->connection);
- }
- /**
- * Query charset by collation
- *
- * @param string $name Collation name
- * @return string Character set name
- */
- function getCharsetName($name) {
- if ((bool)version_compare(mysqli_get_server_info($this->connection), "5", ">=")) {
- $cols = $this->query('SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME= ' . $this->value($name) . ';');
- if (isset($cols[0]['COLLATIONS']['CHARACTER_SET_NAME'])) {
- return $cols[0]['COLLATIONS']['CHARACTER_SET_NAME'];
- }
- }
- return false;
- }
- /**
- * Checks if the result is valid
- *
- * @return boolean True if the result is valid, else false
- */
- function hasResult() {
- return is_object($this->_result);
- }
- }