497 lines
11 KiB
PHP
497 lines
11 KiB
PHP
|
<?php defined('SYSPATH') OR die('No direct access allowed.');
|
||
|
|
/**
|
||
|
|
* MySQL Database Driver
|
||
|
|
*
|
||
|
|
* $Id: Mysql.php 4344 2009-05-11 16:41:39Z zombor $
|
||
|
|
*
|
||
|
|
* @package Core
|
||
|
|
* @author Kohana Team
|
||
|
|
* @copyright (c) 2007-2008 Kohana Team
|
||
|
|
* @license http://kohanaphp.com/license.html
|
||
|
|
*/
|
||
|
|
class Database_Mysql_Driver extends Database_Driver {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Database connection link
|
||
|
|
*/
|
||
|
|
protected $link;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Database configuration
|
||
|
|
*/
|
||
|
|
protected $db_config;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the config for the class.
|
||
|
|
*
|
||
|
|
* @param array database configuration
|
||
|
|
*/
|
||
|
|
public function __construct($config)
|
||
|
|
{
|
||
|
|
$this->db_config = $config;
|
||
|
|
|
||
|
|
Kohana::log('debug', 'MySQL Database Driver Initialized');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Closes the database connection.
|
||
|
|
*/
|
||
|
|
public function __destruct()
|
||
|
|
{
|
||
|
|
is_resource($this->link) and mysql_close($this->link);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function connect()
|
||
|
|
{
|
||
|
|
// Check if link already exists
|
||
|
|
if (is_resource($this->link))
|
||
|
|
return $this->link;
|
||
|
|
|
||
|
|
// Import the connect variables
|
||
|
|
extract($this->db_config['connection']);
|
||
|
|
|
||
|
|
// Persistent connections enabled?
|
||
|
|
$connect = ($this->db_config['persistent'] == TRUE) ? 'mysql_pconnect' : 'mysql_connect';
|
||
|
|
|
||
|
|
// Build the connection info
|
||
|
|
$host = isset($host) ? $host : $socket;
|
||
|
|
$port = isset($port) ? ':'.$port : '';
|
||
|
|
|
||
|
|
// Make the connection and select the database
|
||
|
|
if (($this->link = $connect($host.$port, $user, $pass, TRUE)) AND mysql_select_db($database, $this->link))
|
||
|
|
{
|
||
|
|
if ($charset = $this->db_config['character_set'])
|
||
|
|
{
|
||
|
|
$this->set_charset($charset);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Clear password after successful connect
|
||
|
|
$this->db_config['connection']['pass'] = NULL;
|
||
|
|
|
||
|
|
return $this->link;
|
||
|
|
}
|
||
|
|
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function query($sql)
|
||
|
|
{
|
||
|
|
// Only cache if it's turned on, and only cache if it's not a write statement
|
||
|
|
if ($this->db_config['cache'] AND ! preg_match('#\b(?:INSERT|UPDATE|REPLACE|SET|DELETE|TRUNCATE)\b#i', $sql))
|
||
|
|
{
|
||
|
|
$hash = $this->query_hash($sql);
|
||
|
|
|
||
|
|
if ( ! isset($this->query_cache[$hash]))
|
||
|
|
{
|
||
|
|
// Set the cached object
|
||
|
|
$this->query_cache[$hash] = new Mysql_Result(mysql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Rewind cached result
|
||
|
|
$this->query_cache[$hash]->rewind();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Return the cached query
|
||
|
|
return $this->query_cache[$hash];
|
||
|
|
}
|
||
|
|
|
||
|
|
return new Mysql_Result(mysql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function set_charset($charset)
|
||
|
|
{
|
||
|
|
$this->query('SET NAMES '.$this->escape_str($charset));
|
||
|
|
}
|
||
|
|
|
||
|
|
public function escape_table($table)
|
||
|
|
{
|
||
|
|
if (!$this->db_config['escape'])
|
||
|
|
return $table;
|
||
|
|
|
||
|
|
if (stripos($table, ' AS ') !== FALSE)
|
||
|
|
{
|
||
|
|
// Force 'AS' to uppercase
|
||
|
|
$table = str_ireplace(' AS ', ' AS ', $table);
|
||
|
|
|
||
|
|
// Runs escape_table on both sides of an AS statement
|
||
|
|
$table = array_map(array($this, __FUNCTION__), explode(' AS ', $table));
|
||
|
|
|
||
|
|
// Re-create the AS statement
|
||
|
|
return implode(' AS ', $table);
|
||
|
|
}
|
||
|
|
return '`'.str_replace('.', '`.`', $table).'`';
|
||
|
|
}
|
||
|
|
|
||
|
|
public function escape_column($column)
|
||
|
|
{
|
||
|
|
if (!$this->db_config['escape'])
|
||
|
|
return $column;
|
||
|
|
|
||
|
|
if ($column == '*')
|
||
|
|
return $column;
|
||
|
|
|
||
|
|
// This matches any functions we support to SELECT.
|
||
|
|
if ( preg_match('/(avg|count|sum|max|min)\(\s*(.*)\s*\)(\s*as\s*(.+)?)?/i', $column, $matches))
|
||
|
|
{
|
||
|
|
if ( count($matches) == 3)
|
||
|
|
{
|
||
|
|
return $matches[1].'('.$this->escape_column($matches[2]).')';
|
||
|
|
}
|
||
|
|
else if ( count($matches) == 5)
|
||
|
|
{
|
||
|
|
return $matches[1].'('.$this->escape_column($matches[2]).') AS '.$this->escape_column($matches[2]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// This matches any modifiers we support to SELECT.
|
||
|
|
if ( ! preg_match('/\b(?:rand|all|distinct(?:row)?|high_priority|sql_(?:small_result|b(?:ig_result|uffer_result)|no_cache|ca(?:che|lc_found_rows)))\s/i', $column))
|
||
|
|
{
|
||
|
|
if (stripos($column, ' AS ') !== FALSE)
|
||
|
|
{
|
||
|
|
// Force 'AS' to uppercase
|
||
|
|
$column = str_ireplace(' AS ', ' AS ', $column);
|
||
|
|
|
||
|
|
// Runs escape_column on both sides of an AS statement
|
||
|
|
$column = array_map(array($this, __FUNCTION__), explode(' AS ', $column));
|
||
|
|
|
||
|
|
// Re-create the AS statement
|
||
|
|
return implode(' AS ', $column);
|
||
|
|
}
|
||
|
|
|
||
|
|
return preg_replace('/[^.*]+/', '`$0`', $column);
|
||
|
|
}
|
||
|
|
|
||
|
|
$parts = explode(' ', $column);
|
||
|
|
$column = '';
|
||
|
|
|
||
|
|
for ($i = 0, $c = count($parts); $i < $c; $i++)
|
||
|
|
{
|
||
|
|
// The column is always last
|
||
|
|
if ($i == ($c - 1))
|
||
|
|
{
|
||
|
|
$column .= preg_replace('/[^.*]+/', '`$0`', $parts[$i]);
|
||
|
|
}
|
||
|
|
else // otherwise, it's a modifier
|
||
|
|
{
|
||
|
|
$column .= $parts[$i].' ';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $column;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function regex($field, $match, $type, $num_regexs)
|
||
|
|
{
|
||
|
|
$prefix = ($num_regexs == 0) ? '' : $type;
|
||
|
|
|
||
|
|
return $prefix.' '.$this->escape_column($field).' REGEXP \''.$this->escape_str($match).'\'';
|
||
|
|
}
|
||
|
|
|
||
|
|
public function notregex($field, $match, $type, $num_regexs)
|
||
|
|
{
|
||
|
|
$prefix = $num_regexs == 0 ? '' : $type;
|
||
|
|
|
||
|
|
return $prefix.' '.$this->escape_column($field).' NOT REGEXP \''.$this->escape_str($match) . '\'';
|
||
|
|
}
|
||
|
|
|
||
|
|
public function merge($table, $keys, $values)
|
||
|
|
{
|
||
|
|
// Escape the column names
|
||
|
|
foreach ($keys as $key => $value)
|
||
|
|
{
|
||
|
|
$keys[$key] = $this->escape_column($value);
|
||
|
|
}
|
||
|
|
return 'REPLACE INTO '.$this->escape_table($table).' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
|
||
|
|
}
|
||
|
|
|
||
|
|
public function limit($limit, $offset = 0)
|
||
|
|
{
|
||
|
|
return 'LIMIT '.$offset.', '.$limit;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function compile_select($database)
|
||
|
|
{
|
||
|
|
$sql = ($database['distinct'] == TRUE) ? 'SELECT DISTINCT ' : 'SELECT ';
|
||
|
|
$sql .= (count($database['select']) > 0) ? implode(', ', $database['select']) : '*';
|
||
|
|
|
||
|
|
if (count($database['from']) > 0)
|
||
|
|
{
|
||
|
|
// Escape the tables
|
||
|
|
$froms = array();
|
||
|
|
foreach ($database['from'] as $from)
|
||
|
|
{
|
||
|
|
$froms[] = $this->escape_column($from);
|
||
|
|
}
|
||
|
|
$sql .= "\nFROM (";
|
||
|
|
$sql .= implode(', ', $froms).")";
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($database['join']) > 0)
|
||
|
|
{
|
||
|
|
foreach($database['join'] AS $join)
|
||
|
|
{
|
||
|
|
$sql .= "\n".$join['type'].'JOIN '.implode(', ', $join['tables']).' ON '.$join['conditions'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($database['where']) > 0)
|
||
|
|
{
|
||
|
|
$sql .= "\nWHERE ";
|
||
|
|
}
|
||
|
|
|
||
|
|
$sql .= implode("\n", $database['where']);
|
||
|
|
|
||
|
|
if (count($database['groupby']) > 0)
|
||
|
|
{
|
||
|
|
$sql .= "\nGROUP BY ";
|
||
|
|
$sql .= implode(', ', $database['groupby']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($database['having']) > 0)
|
||
|
|
{
|
||
|
|
$sql .= "\nHAVING ";
|
||
|
|
$sql .= implode("\n", $database['having']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (count($database['orderby']) > 0)
|
||
|
|
{
|
||
|
|
$sql .= "\nORDER BY ";
|
||
|
|
$sql .= implode(', ', $database['orderby']);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (is_numeric($database['limit']))
|
||
|
|
{
|
||
|
|
$sql .= "\n";
|
||
|
|
$sql .= $this->limit($database['limit'], $database['offset']);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $sql;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function escape_str($str)
|
||
|
|
{
|
||
|
|
if (!$this->db_config['escape'])
|
||
|
|
return $str;
|
||
|
|
|
||
|
|
is_resource($this->link) or $this->connect();
|
||
|
|
|
||
|
|
return mysql_real_escape_string($str, $this->link);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function list_tables()
|
||
|
|
{
|
||
|
|
$tables = array();
|
||
|
|
|
||
|
|
if ($query = $this->query('SHOW TABLES FROM '.$this->escape_table($this->db_config['connection']['database'])))
|
||
|
|
{
|
||
|
|
foreach ($query->result(FALSE) as $row)
|
||
|
|
{
|
||
|
|
$tables[] = current($row);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $tables;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function show_error()
|
||
|
|
{
|
||
|
|
return mysql_error($this->link);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function list_fields($table)
|
||
|
|
{
|
||
|
|
$result = NULL;
|
||
|
|
|
||
|
|
foreach ($this->field_data($table) as $row)
|
||
|
|
{
|
||
|
|
// Make an associative array
|
||
|
|
$result[$row->Field] = $this->sql_type($row->Type);
|
||
|
|
|
||
|
|
if ($row->Key === 'PRI' AND $row->Extra === 'auto_increment')
|
||
|
|
{
|
||
|
|
// For sequenced (AUTO_INCREMENT) tables
|
||
|
|
$result[$row->Field]['sequenced'] = TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($row->Null === 'YES')
|
||
|
|
{
|
||
|
|
// Set NULL status
|
||
|
|
$result[$row->Field]['null'] = TRUE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!isset($result))
|
||
|
|
throw new Kohana_Database_Exception('database.table_not_found', $table);
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function field_data($table)
|
||
|
|
{
|
||
|
|
$result = $this->query('SHOW COLUMNS FROM '.$this->escape_table($table));
|
||
|
|
|
||
|
|
return $result->result_array(TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // End Database_Mysql_Driver Class
|
||
|
|
|
||
|
|
/**
|
||
|
|
* MySQL Result
|
||
|
|
*/
|
||
|
|
class Mysql_Result extends Database_Result {
|
||
|
|
|
||
|
|
// Fetch function and return type
|
||
|
|
protected $fetch_type = 'mysql_fetch_object';
|
||
|
|
protected $return_type = MYSQL_ASSOC;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets up the result variables.
|
||
|
|
*
|
||
|
|
* @param resource query result
|
||
|
|
* @param resource database link
|
||
|
|
* @param boolean return objects or arrays
|
||
|
|
* @param string SQL query that was run
|
||
|
|
*/
|
||
|
|
public function __construct($result, $link, $object = TRUE, $sql)
|
||
|
|
{
|
||
|
|
$this->result = $result;
|
||
|
|
|
||
|
|
// If the query is a resource, it was a SELECT, SHOW, DESCRIBE, EXPLAIN query
|
||
|
|
if (is_resource($result))
|
||
|
|
{
|
||
|
|
$this->current_row = 0;
|
||
|
|
$this->total_rows = mysql_num_rows($this->result);
|
||
|
|
$this->fetch_type = ($object === TRUE) ? 'mysql_fetch_object' : 'mysql_fetch_array';
|
||
|
|
}
|
||
|
|
elseif (is_bool($result))
|
||
|
|
{
|
||
|
|
if ($result == FALSE)
|
||
|
|
{
|
||
|
|
// SQL error
|
||
|
|
throw new Kohana_Database_Exception('database.error', mysql_error($link).' - '.$sql);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Its an DELETE, INSERT, REPLACE, or UPDATE query
|
||
|
|
$this->insert_id = mysql_insert_id($link);
|
||
|
|
$this->total_rows = mysql_affected_rows($link);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Set result type
|
||
|
|
$this->result($object);
|
||
|
|
|
||
|
|
// Store the SQL
|
||
|
|
$this->sql = $sql;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Destruct, the cleanup crew!
|
||
|
|
*/
|
||
|
|
public function __destruct()
|
||
|
|
{
|
||
|
|
if (is_resource($this->result))
|
||
|
|
{
|
||
|
|
mysql_free_result($this->result);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function result($object = TRUE, $type = MYSQL_ASSOC)
|
||
|
|
{
|
||
|
|
$this->fetch_type = ((bool) $object) ? 'mysql_fetch_object' : 'mysql_fetch_array';
|
||
|
|
|
||
|
|
// This check has to be outside the previous statement, because we do not
|
||
|
|
// know the state of fetch_type when $object = NULL
|
||
|
|
// NOTE - The class set by $type must be defined before fetching the result,
|
||
|
|
// autoloading is disabled to save a lot of stupid overhead.
|
||
|
|
if ($this->fetch_type == 'mysql_fetch_object' AND $object === TRUE)
|
||
|
|
{
|
||
|
|
$this->return_type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
$this->return_type = $type;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function as_array($object = NULL, $type = MYSQL_ASSOC)
|
||
|
|
{
|
||
|
|
return $this->result_array($object, $type);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function result_array($object = NULL, $type = MYSQL_ASSOC)
|
||
|
|
{
|
||
|
|
$rows = array();
|
||
|
|
|
||
|
|
if (is_string($object))
|
||
|
|
{
|
||
|
|
$fetch = $object;
|
||
|
|
}
|
||
|
|
elseif (is_bool($object))
|
||
|
|
{
|
||
|
|
if ($object === TRUE)
|
||
|
|
{
|
||
|
|
$fetch = 'mysql_fetch_object';
|
||
|
|
|
||
|
|
$type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
$fetch = 'mysql_fetch_array';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// Use the default config values
|
||
|
|
$fetch = $this->fetch_type;
|
||
|
|
|
||
|
|
if ($fetch == 'mysql_fetch_object')
|
||
|
|
{
|
||
|
|
$type = (is_string($this->return_type) AND Kohana::auto_load($this->return_type)) ? $this->return_type : 'stdClass';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mysql_num_rows($this->result))
|
||
|
|
{
|
||
|
|
// Reset the pointer location to make sure things work properly
|
||
|
|
mysql_data_seek($this->result, 0);
|
||
|
|
|
||
|
|
while ($row = $fetch($this->result, $type))
|
||
|
|
{
|
||
|
|
$rows[] = $row;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return isset($rows) ? $rows : array();
|
||
|
|
}
|
||
|
|
|
||
|
|
public function list_fields()
|
||
|
|
{
|
||
|
|
$field_names = array();
|
||
|
|
while ($field = mysql_fetch_field($this->result))
|
||
|
|
{
|
||
|
|
$field_names[] = $field->name;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $field_names;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function seek($offset)
|
||
|
|
{
|
||
|
|
if ($this->offsetExists($offset) AND mysql_data_seek($this->result, $offset))
|
||
|
|
{
|
||
|
|
// Set the current row to the offset
|
||
|
|
$this->current_row = $offset;
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // End Mysql_Result Class
|