Vergleich inc/db_mysqli.php - 1.8.0 - 1.8.7

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 *
 */


 
 *
 */


class DB_MySQLi

class DB_MySQLi implements DB_Base

{
	/**
	 * The title of this layer.

{
	/**
	 * The title of this layer.

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	/**
	 * The read database connection resource.
	 *

 
	/**
	 * The read database connection resource.
	 *

	 * @var resource

	 * @var mysqli

	 */
	public $read_link;

	/**
	 * The write database connection resource
	 *

 
	 */
	public $read_link;

	/**
	 * The write database connection resource
	 *

	 * @var resource

	 * @var mysqli

	 */
	public $write_link;

	/**
	 * Reference to the last database connection resource used.
	 *

 
	 */
	public $write_link;

	/**
	 * Reference to the last database connection resource used.
	 *

	 * @var resource

	 * @var mysqli

	 */
	public $current_link;

	/**

 
	 */
	public $current_link;

	/**

	 * Explanation of a query.

	 * The database name.

	 *

 
	 *

	 * @var string
	 */








	 * @var string
	 */
	public $database;

	/**
	 * Explanation of a query.
	 *
	 * @var string
	 */

	public $explain;

	/**

	public $explain;

	/**

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	 * @var string
	 */
	public $version;

 
	 * @var string
	 */
	public $version;


	/**


	/**

	 * The current table type in use (myisam/innodb)

 
	 * The current table type in use (myisam/innodb)

	 *
	 * @var string

	 *
	 * @var string

	 */
	public $table_type = "myisam";

	/**
	 * The table prefix used for simple select, update, insert and delete queries

 
	 */
	public $table_type = "myisam";

	/**
	 * The table prefix used for simple select, update, insert and delete queries

	 *
	 * @var string
	 */

	 *
	 * @var string
	 */

	public $table_prefix;

	/**

	public $table_prefix;

	/**

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	 * @var int
	 */
	protected $last_query_type = 0;

 
	 * @var int
	 */
	protected $last_query_type = 0;





	/**
	 * Connect to the database server.
	 *

 
	/**
	 * Connect to the database server.
	 *

	 * @param array Array of DBMS connection details.
	 * @return resource The DB connection resource. Returns false on fail or -1 on a db connect failure.

	 * @param array $config Array of DBMS connection details.
	 * @return mysqli The DB connection resource. Returns false on fail or -1 on a db connect failure.

	 */
	function connect($config)
	{

	 */
	function connect($config)
	{

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						$connections['read'][] = $settings;
					}
				}

 
						$connections['read'][] = $settings;
					}
				}

			}

			}

			// Specified both read & write servers
			else
			{

			// Specified both read & write servers
			else
			{

Zeile 174Zeile 181

		// Actually connect to the specified servers
		foreach(array('read', 'write') as $type)

 

		// Actually connect to the specified servers
		foreach(array('read', 'write') as $type)

		{

		{

			if(!isset($connections[$type]) || !is_array($connections[$type]))

 
			if(!isset($connections[$type]) || !is_array($connections[$type]))

			{

			{

				break;

 
				break;

			}


			}


			if(array_key_exists('hostname', $connections[$type]))
			{
				$details = $connections[$type];
				unset($connections);
				$connections[$type][] = $details;

 
			if(array_key_exists('hostname', $connections[$type]))
			{
				$details = $connections[$type];
				unset($connections);
				$connections[$type][] = $details;

			}


			}


			// Shuffle the connections
			shuffle($connections[$type]);


			// Shuffle the connections
			shuffle($connections[$type]);


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				if(!empty($single_connection['pconnect']) && version_compare(PHP_VERSION, '5.3.0', '>='))
				{
					$persist = 'p:';

 
				if(!empty($single_connection['pconnect']) && version_compare(PHP_VERSION, '5.3.0', '>='))
				{
					$persist = 'p:';

				}

				$link = "{$type}_link";

				}

				$link = "{$type}_link";


				get_execution_time();

 

				get_execution_time();





				// Specified a custom port for this connection?
				$port = 0;
				if(strstr($single_connection['hostname'],':'))
				{
					list($hostname, $port) = explode(":", $single_connection['hostname'], 2);

 
				// Specified a custom port for this connection?
				$port = 0;
				if(strstr($single_connection['hostname'],':'))
				{
					list($hostname, $port) = explode(":", $single_connection['hostname'], 2);

				}


				}


				if($port)
				{
					$this->$link = @$connect_function($persist.$hostname, $single_connection['username'], $single_connection['password'], "", $port);

 
				if($port)
				{
					$this->$link = @$connect_function($persist.$hostname, $single_connection['username'], $single_connection['password'], "", $port);

				}

				}

				else
				{
					$this->$link = @$connect_function($persist.$single_connection['hostname'], $single_connection['username'], $single_connection['password']);
				}

 
				else
				{
					$this->$link = @$connect_function($persist.$single_connection['hostname'], $single_connection['username'], $single_connection['password']);
				}





				$time_spent = get_execution_time();

 
				$time_spent = get_execution_time();

				$this->query_time += $time_spent;


				$this->query_time += $time_spent;


				// Successful connection? break down brother!
				if($this->$link)

 
				// Successful connection? break down brother!
				if($this->$link)

				{

				{

					$this->connections[] = "[".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']} (Connected in ".format_time_duration($time_spent).")";
					break;

 
					$this->connections[] = "[".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']} (Connected in ".format_time_duration($time_spent).")";
					break;

				}

				}

				else
				{
					$this->connections[] = "<span style=\"color: red\">[FAILED] [".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']}</span>";
				}
			}

 
				else
				{
					$this->connections[] = "<span style=\"color: red\">[FAILED] [".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']}</span>";
				}
			}

		}


		}


		// No write server was specified (simple connection or just multiple servers) - mirror write link
		if(!array_key_exists('write', $connections))

 
		// No write server was specified (simple connection or just multiple servers) - mirror write link
		if(!array_key_exists('write', $connections))

		{

		{

			$this->write_link = &$this->read_link;
		}


			$this->write_link = &$this->read_link;
		}


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		if(!$this->read_link)
		{
			$this->error("[READ] Unable to connect to MySQL server");

 
		if(!$this->read_link)
		{
			$this->error("[READ] Unable to connect to MySQL server");

			return false;

			return false;

		}
		// No write?
		else if(!$this->write_link)

		}
		// No write?
		else if(!$this->write_link)

Zeile 268Zeile 275
	/**
	 * Selects the database to use.
	 *

 
	/**
	 * Selects the database to use.
	 *

	 * @param string The database name.

	 * @param string $database The database name.

	 * @return boolean True when successfully connected, false if not.
	 */
	function select_db($database)

 
	 * @return boolean True when successfully connected, false if not.
	 */
	function select_db($database)

	{
		global $mybb;


	{
		$this->database = $database;


		$master_success = @mysqli_select_db($this->read_link, $database) or $this->error("[READ] Unable to select database", $this->read_link);
		if($this->write_link)

 
		$master_success = @mysqli_select_db($this->read_link, $database) or $this->error("[READ] Unable to select database", $this->read_link);
		if($this->write_link)

		{

		{

			$slave_success = @mysqli_select_db($this->write_link, $database) or $this->error("[WRITE] Unable to select slave database", $this->write_link);

			$success = ($master_success && $slave_success ? true : false);

 
			$slave_success = @mysqli_select_db($this->write_link, $database) or $this->error("[WRITE] Unable to select slave database", $this->write_link);

			$success = ($master_success && $slave_success ? true : false);

		}

		}

		else
		{
			$success = $master_success;

 
		else
		{
			$success = $master_success;

		}


		}


		if($success && $this->db_encoding)
		{
			@mysqli_set_charset($this->read_link, $this->db_encoding);

		if($success && $this->db_encoding)
		{
			@mysqli_set_charset($this->read_link, $this->db_encoding);

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			}
		}
		return $success;

 
			}
		}
		return $success;

	}


	}


	/**
	 * Query the database.
	 *

 
	/**
	 * Query the database.
	 *

	 * @param string The query SQL.
	 * @param boolean 1 if hide errors, 0 if not.
	 * @param integer 1 if executes on master database, 0 if not.
	 * @return resource The query data.

	 * @param string $string The query SQL.
	 * @param boolean|int $hide_errors 1 if hide errors, 0 if not.
	 * @param integer $write_query 1 if executes on master database, 0 if not.
	 * @return mysqli_result The query data.

	 */
	function query($string, $hide_errors=0, $write_query=0)
	{

 
	 */
	function query($string, $hide_errors=0, $write_query=0)
	{

		global $pagestarttime, $db, $mybb;

		global $mybb;


		get_execution_time();



		get_execution_time();


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	/**
	 * Execute a write query on the master database

 

	/**
	 * Execute a write query on the master database

	 *
	 * @param string The query SQL.
	 * @param boolean 1 if hide errors, 0 if not.
	 * @return resource The query data.

	 *
	 * @param string $query The query SQL.
	 * @param boolean|int $hide_errors 1 if hide errors, 0 if not.
	 * @return mysqli_result The query data.

	 */
	function write_query($query, $hide_errors=0)
	{

	 */
	function write_query($query, $hide_errors=0)
	{

Zeile 366Zeile 373
	/**
	 * Explain a query on the database.
	 *

 
	/**
	 * Explain a query on the database.
	 *

	 * @param string The query SQL.
	 * @param string The time it took to perform the query.

	 * @param string $string The query SQL.
	 * @param string $qtime The time it took to perform the query.

	 */
	function explain_query($string, $qtime)
	{

	 */
	function explain_query($string, $qtime)
	{

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		if(preg_match("#^\s*select#i", $string))
		{
			$query = mysqli_query($this->current_link, "EXPLAIN $string");

 
		if(preg_match("#^\s*select#i", $string))
		{
			$query = mysqli_query($this->current_link, "EXPLAIN $string");

			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".
				"<tr>\n".

			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".
				"<tr>\n".

				"<td colspan=\"8\" style=\"background-color: #ccc;\">{$debug_extra}<div><strong>#".$this->query_count." - Select Query</strong></div></td>\n".
				"</tr>\n".
				"<tr>\n".

				"<td colspan=\"8\" style=\"background-color: #ccc;\">{$debug_extra}<div><strong>#".$this->query_count." - Select Query</strong></div></td>\n".
				"</tr>\n".
				"<tr>\n".

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	/**
	 * Return a result array for a query.
	 *

 
	/**
	 * Return a result array for a query.
	 *

	 * @param resource The query data.
	 * @param constant The type of array to return.

	 * @param mysqli_result $query The query data.
	 * @param int $resulttype The type of array to return. Either MYSQLI_NUM, MYSQLI_BOTH or MYSQLI_ASSOC

	 * @return array The array of results.
	 */
	function fetch_array($query, $resulttype=MYSQLI_ASSOC)

	 * @return array The array of results.
	 */
	function fetch_array($query, $resulttype=MYSQLI_ASSOC)

Zeile 467Zeile 474
	/**
	 * Return a specific field from a query.
	 *

 
	/**
	 * Return a specific field from a query.
	 *

	 * @param resource The query ID.
	 * @param string The name of the field to return.
	 * @param int The number of the row to fetch it from.

	 * @param mysqli_result $query The query ID.
	 * @param string $field The name of the field to return.
	 * @param int|bool $row The number of the row to fetch it from.

	 */
	function fetch_field($query, $field, $row=false)
	{

	 */
	function fetch_field($query, $field, $row=false)
	{

Zeile 484Zeile 491
	/**
	 * Moves internal row pointer to the next row
	 *

 
	/**
	 * Moves internal row pointer to the next row
	 *

	 * @param resource The query ID.
	 * @param int The pointer to move the row to.


	 * @param mysqli_result $query The query ID.
	 * @param int $row The pointer to move the row to.
	 * @return bool

	 */
	function data_seek($query, $row)
	{

	 */
	function data_seek($query, $row)
	{

Zeile 495Zeile 503
	/**
	 * Return the number of rows resulting from a query.
	 *

 
	/**
	 * Return the number of rows resulting from a query.
	 *

	 * @param resource The query data.

	 * @param mysqli_result $query The query data.

	 * @return int The number of rows in the result.
	 */
	function num_rows($query)

	 * @return int The number of rows in the result.
	 */
	function num_rows($query)

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	/**
	 * Output a database error.
	 *

 
	/**
	 * Output a database error.
	 *

	 * @param string The string to present as an error.


	 * @param string $string The string to present as an error.
	 * @return bool Whether error reporting is enabled or not

	 */
	function error($string="")
	{

	 */
	function error($string="")
	{

Zeile 586Zeile 595
					"query" => $string
				);
				$error_handler->error(MYBB_SQL, $error);

 
					"query" => $string
				);
				$error_handler->error(MYBB_SQL, $error);

			}
			else
			{

			}
			else
			{

				trigger_error("<strong>[SQL] [".$this->error_number()."] ".$this->error_string()."</strong><br />{$string}", E_USER_ERROR);
			}

 
				trigger_error("<strong>[SQL] [".$this->error_number()."] ".$this->error_string()."</strong><br />{$string}", E_USER_ERROR);
			}

 

			return true;

		}
		else
		{
			return false;

 
		}
		else
		{
			return false;

		}
	}

		}
	}


	/**
	 * Returns the number of affected rows in a query.


	/**
	 * Returns the number of affected rows in a query.

Zeile 604Zeile 615
	 * @return int The number of affected rows.
	 */
	function affected_rows()

 
	 * @return int The number of affected rows.
	 */
	function affected_rows()

	{

	{

		return mysqli_affected_rows($this->current_link);
	}

	/**
	 * Return the number of fields.
	 *

 
		return mysqli_affected_rows($this->current_link);
	}

	/**
	 * Return the number of fields.
	 *

	 * @param resource The query data.

	 * @param mysqli_result $query The query data.

	 * @return int The number of fields.

 
	 * @return int The number of fields.

	 */

	 */

	function num_fields($query)
	{
		return mysqli_num_fields($query);

 
	function num_fields($query)
	{
		return mysqli_num_fields($query);

	}

	/**
	 * Lists all functions in the database.
	 *
	 * @param string The database name.
	 * @param string Prefix of the table (optional)

	}

	/**
	 * Lists all tables in the database.
	 *
	 * @param string $database The database name.
	 * @param string $prefix Prefix of the table (optional)

	 * @return array The table list.
	 */
	function list_tables($database, $prefix='')
	{
		if($prefix)
		{

 
	 * @return array The table list.
	 */
	function list_tables($database, $prefix='')
	{
		if($prefix)
		{

			$query = $this->query("SHOW TABLES FROM `$database` LIKE '".$this->escape_string($prefix)."%'");
		}
		else
		{
			$query = $this->query("SHOW TABLES FROM `$database`");















			if(version_compare($this->get_version(), '5.0.2', '>='))
			{
				$query = $this->query("SHOW FULL TABLES FROM `$database` WHERE table_type = 'BASE TABLE' AND `Tables_in_$database` LIKE '".$this->escape_string($prefix)."%'");
			}
			else
			{
				$query = $this->query("SHOW TABLES FROM `$database` LIKE '".$this->escape_string($prefix)."%'");
			}
		}
		else
		{
			if(version_compare($this->get_version(), '5.0.2', '>='))
			{
				$query = $this->query("SHOW FULL TABLES FROM `$database` WHERE table_type = 'BASE TABLE'");
			}
			else
			{
				$query = $this->query("SHOW TABLES FROM `$database`");
			}

		}

		$tables = array();

 
		}

		$tables = array();

		while(list($table) = mysqli_fetch_array($query))
		{
			$tables[] = $table;
		}


		while(list($table) = mysqli_fetch_array($query))
		{
			$tables[] = $table;
		}


		return $tables;
	}

	/**
	 * Check if a table exists in a database.
	 *

 
		return $tables;
	}

	/**
	 * Check if a table exists in a database.
	 *

	 * @param string The table name.

	 * @param string $table The table name.

	 * @return boolean True when exists, false if not.
	 */
	function table_exists($table)
	{
		// Execute on master server to ensure if we've just created a table that we get the correct result

 
	 * @return boolean True when exists, false if not.
	 */
	function table_exists($table)
	{
		// Execute on master server to ensure if we've just created a table that we get the correct result

		$query = $this->write_query("
			SHOW TABLES
			LIKE '{$this->table_prefix}$table'
		");
		$exists = $this->num_rows($query);




		if(version_compare($this->get_version(), '5.0.2', '>='))
		{
			$query = $this->query("SHOW FULL TABLES FROM `".$this->database."` WHERE table_type = 'BASE TABLE' AND `Tables_in_".$this->database."` = '{$this->table_prefix}$table'");
		}
		else
		{
			$query = $this->query("SHOW TABLES LIKE '{$this->table_prefix}$table'");
		}


 
		$exists = $this->num_rows($query);

		if($exists > 0)
		{
			return true;

		if($exists > 0)
		{
			return true;

Zeile 673Zeile 703
	/**
	 * Check if a field exists in a database.
	 *

 
	/**
	 * Check if a field exists in a database.
	 *

	 * @param string The field name.
	 * @param string The table name.

	 * @param string $field The field name.
	 * @param string $table The table name.

	 * @return boolean True when exists, false if not.
	 */
	function field_exists($field, $table)

	 * @return boolean True when exists, false if not.
	 */
	function field_exists($field, $table)

Zeile 699Zeile 729
	/**
	 * Add a shutdown query.
	 *

 
	/**
	 * Add a shutdown query.
	 *

	 * @param resource The query data.
	 * @param string An optional name for the query.

	 * @param mysqli_result $query The query data.
	 * @param string $name An optional name for the query.

	 */

 
	 */

	function shutdown_query($query, $name=0)

	function shutdown_query($query, $name="")

	{
		global $shutdown_queries;
		if($name)

	{
		global $shutdown_queries;
		if($name)

Zeile 718Zeile 748
	/**
	 * Performs a simple select query.
	 *

 
	/**
	 * Performs a simple select query.
	 *

	 * @param string The table name to be queried.
	 * @param string Comma delimetered list of fields to be selected.
	 * @param string SQL formatted list of conditions to be matched.
	 * @param array List of options: group by, order by, order direction, limit, limit start.
	 * @return resource The query data.

	 * @param string $table The table name to be queried.
	 * @param string $fields Comma delimetered list of fields to be selected.
	 * @param string $conditions SQL formatted list of conditions to be matched.
	 * @param array $options List of options: group by, order by, order direction, limit, limit start.
	 * @return mysqli_result The query data.

	 */
	function simple_select($table, $fields="*", $conditions="", $options=array())
	{

	 */
	function simple_select($table, $fields="*", $conditions="", $options=array())
	{

Zeile 762Zeile 792
	/**
	 * Build an insert query from an array.
	 *

 
	/**
	 * Build an insert query from an array.
	 *

	 * @param string The table name to perform the query on.
	 * @param array An array of fields and their values.

	 * @param string $table The table name to perform the query on.
	 * @param array $array An array of fields and their values.

	 * @return int The insert ID if available
	 */
	function insert_query($table, $array)

	 * @return int The insert ID if available
	 */
	function insert_query($table, $array)

Zeile 788Zeile 818
			}
			else
			{

 
			}
			else
			{

				$array[$field] = "'{$value}'";

				$array[$field] = $this->quote_val($value);

			}
		}


			}
		}


Zeile 805Zeile 835
	/**
	 * Build one query for multiple inserts from a multidimensional array.
	 *

 
	/**
	 * Build one query for multiple inserts from a multidimensional array.
	 *

	 * @param string The table name to perform the query on.
	 * @param array An array of inserts.
	 * @return int The insert ID if available

	 * @param string $table The table name to perform the query on.
	 * @param array $array An array of inserts.
	 * @return void

	 */
	function insert_query_multiple($table, $array)
	{

	 */
	function insert_query_multiple($table, $array)
	{

Zeile 815Zeile 845

		if(!is_array($array))
		{

 

		if(!is_array($array))
		{

			return false;

			return;

		}
		// Field names
		$fields = array_keys($array[0]);

		}
		// Field names
		$fields = array_keys($array[0]);

Zeile 836Zeile 866
					$values[$field] = $value;
				}
				else

 
					$values[$field] = $value;
				}
				else

				{
					$values[$field] = "'{$value}'";
				}
			}

				{
					$values[$field] = $this->quote_val($value);
				}
			}

			$insert_rows[] = "(".implode(",", $values).")";
		}
		$insert_rows = implode(", ", $insert_rows);

			$insert_rows[] = "(".implode(",", $values).")";
		}
		$insert_rows = implode(", ", $insert_rows);

Zeile 848Zeile 878
			INSERT
			INTO {$this->table_prefix}{$table} ({$fields})
			VALUES {$insert_rows}

 
			INSERT
			INTO {$this->table_prefix}{$table} ({$fields})
			VALUES {$insert_rows}

		");
	}


		");
	}


	/**
	 * Build an update query from an array.
	 *

 
	/**
	 * Build an update query from an array.
	 *

	 * @param string The table name to perform the query on.
	 * @param array An array of fields and their values.
	 * @param string An optional where clause for the query.
	 * @param string An optional limit clause for the query.
	 * @param boolean An option to quote incoming values of the array.
	 * @return resource The query data.

	 * @param string $table The table name to perform the query on.
	 * @param array $array An array of fields and their values.
	 * @param string $where An optional where clause for the query.
	 * @param string $limit An optional limit clause for the query.
	 * @param boolean $no_quote An option to quote incoming values of the array.
	 * @return mysqli_result The query data.

	 */
	function update_query($table, $array, $where="", $limit="", $no_quote=false)
	{

	 */
	function update_query($table, $array, $where="", $limit="", $no_quote=false)
	{

Zeile 868Zeile 898
		if(!is_array($array))
		{
			return false;

 
		if(!is_array($array))
		{
			return false;

		}

		}


		$comma = "";
		$query = "";
		$quote = "'";

 

		$comma = "";
		$query = "";
		$quote = "'";





		if($no_quote == true)
		{
			$quote = "";
		}

		foreach($array as $field => $value)

 
		if($no_quote == true)
		{
			$quote = "";
		}

		foreach($array as $field => $value)

		{

		{

			if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
			{
				if($value[0] != 'X') // Not escaped?

			if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
			{
				if($value[0] != 'X') // Not escaped?

Zeile 892Zeile 922
			}
			else
			{

 
			}
			else
			{

				if(is_numeric($value))
				{
					$query .= $comma."`".$field."`={$value}";
				}
				else
				{
					$query .= $comma."`".$field."`={$quote}{$value}{$quote}";
				}

				$quoted_value = $this->quote_val($value, $quote);

				$query .= $comma."`".$field."`={$quoted_value}";






			}
			$comma = ', ';
		}

			}
			$comma = ', ';
		}

Zeile 918Zeile 943
			UPDATE {$this->table_prefix}$table
			SET $query
		");

 
			UPDATE {$this->table_prefix}$table
			SET $query
		");

 
	}

	/**
	 * @param int|string $value
	 * @param string $quote
	 *
	 * @return int|string
	 */
	private function quote_val($value, $quote="'")
	{
		if(is_int($value))
		{
			$quoted = $value;
		}
		else
		{
			$quoted = $quote . $value . $quote;
		}

		return $quoted;

	}

	/**
	 * Build a delete query.
	 *

 
	}

	/**
	 * Build a delete query.
	 *

	 * @param string The table name to perform the query on.
	 * @param string An optional where clause for the query.
	 * @param string An optional limit clause for the query.
	 * @return resource The query data.

	 * @param string $table The table name to perform the query on.
	 * @param string $where An optional where clause for the query.
	 * @param string $limit An optional limit clause for the query.
	 * @return mysqli_result The query data.

	 */
	function delete_query($table, $where="", $limit="")
	{

	 */
	function delete_query($table, $where="", $limit="")
	{

Zeile 945Zeile 990
	/**
	 * Escape a string according to the MySQL escape format.
	 *

 
	/**
	 * Escape a string according to the MySQL escape format.
	 *

	 * @param string The string to be escaped.

	 * @param string $string The string to be escaped.

	 * @return string The escaped string.
	 */
	function escape_string($string)

	 * @return string The escaped string.
	 */
	function escape_string($string)

Zeile 973Zeile 1018
	/**
	 * Frees the resources of a MySQLi query.
	 *

 
	/**
	 * Frees the resources of a MySQLi query.
	 *

	 * @param object The query to destroy.
	 * @return boolean Returns true on success, false on faliure

	 * @param mysqli_result $query The query to destroy.
	 * @return boolean Returns true

	 */
	function free_result($query)
	{

 
	 */
	function free_result($query)
	{

		return mysqli_free_result($query);


		mysqli_free_result($query);
		return true; // Kept for compatibility reasons

	}

	/**
	 * Escape a string used within a like command.
	 *

 
	}

	/**
	 * Escape a string used within a like command.
	 *

	 * @param string The string to be escaped.

	 * @param string $string The string to be escaped.

	 * @return string The escaped string.
	 */
	function escape_string_like($string)

	 * @return string The escaped string.
	 */
	function escape_string_like($string)

Zeile 1023Zeile 1069
	/**
	 * Optimizes a specific table.
	 *

 
	/**
	 * Optimizes a specific table.
	 *

	 * @param string The name of the table to be optimized.

	 * @param string $table The name of the table to be optimized.

	 */
	function optimize_table($table)
	{

	 */
	function optimize_table($table)
	{

Zeile 1033Zeile 1079
	/**
	 * Analyzes a specific table.
	 *

 
	/**
	 * Analyzes a specific table.
	 *

	 * @param string The name of the table to be analyzed.

	 * @param string $table The name of the table to be analyzed.

	 */
	function analyze_table($table)
	{

	 */
	function analyze_table($table)
	{

Zeile 1043Zeile 1089
	/**
	 * Show the "create table" command for a specific table.
	 *

 
	/**
	 * Show the "create table" command for a specific table.
	 *

	 * @param string The name of the table.

	 * @param string $table The name of the table.

	 * @return string The MySQL command to create the specified table.
	 */
	function show_create_table($table)

	 * @return string The MySQL command to create the specified table.
	 */
	function show_create_table($table)

Zeile 1057Zeile 1103
	/**
	 * Show the "show fields from" command for a specific table.
	 *

 
	/**
	 * Show the "show fields from" command for a specific table.
	 *

	 * @param string The name of the table.
	 * @return string Field info for that table

	 * @param string $table The name of the table.
	 * @return array Field info for that table

	 */
	function show_fields_from($table)
	{
		$query = $this->write_query("SHOW FIELDS FROM ".$this->table_prefix.$table."");

 
	 */
	function show_fields_from($table)
	{
		$query = $this->write_query("SHOW FIELDS FROM ".$this->table_prefix.$table."");

 
		$field_info = array();

		while($field = $this->fetch_array($query))
		{
			$field_info[] = $field;

		while($field = $this->fetch_array($query))
		{
			$field_info[] = $field;

Zeile 1073Zeile 1120
	/**
	 * Returns whether or not the table contains a fulltext index.
	 *

 
	/**
	 * Returns whether or not the table contains a fulltext index.
	 *

	 * @param string The name of the table.
	 * @param string Optionally specify the name of the index.

	 * @param string $table The name of the table.
	 * @param string $index Optionally specify the name of the index.

	 * @return boolean True or false if the table has a fulltext index or not.
	 */
	function is_fulltext($table, $index="")

	 * @return boolean True or false if the table has a fulltext index or not.
	 */
	function is_fulltext($table, $index="")

Zeile 1101Zeile 1148
	/**
	 * Returns whether or not this database engine supports fulltext indexing.
	 *

 
	/**
	 * Returns whether or not this database engine supports fulltext indexing.
	 *

	 * @param string The table to be checked.

	 * @param string $table The table to be checked.

	 * @return boolean True or false if supported or not.
	 */


	 * @return boolean True or false if supported or not.
	 */


Zeile 1125Zeile 1172
	/**
	 * Returns whether or not this database engine supports boolean fulltext matching.
	 *

 
	/**
	 * Returns whether or not this database engine supports boolean fulltext matching.
	 *

	 * @param string The table to be checked.

	 * @param string $table The table to be checked.

	 * @return boolean True or false if supported or not.
	 */
	function supports_fulltext_boolean($table)

	 * @return boolean True or false if supported or not.
	 */
	function supports_fulltext_boolean($table)

Zeile 1142Zeile 1189
	/**
	 * Checks to see if an index exists on a specified table
	 *

 
	/**
	 * Checks to see if an index exists on a specified table
	 *

	 * @param string The name of the table.
	 * @param string The name of the index.


	 * @param string $table The name of the table.
	 * @param string $index The name of the index.
	 * @return bool Returns whether index exists

	 */
	function index_exists($table, $index)
	{

	 */
	function index_exists($table, $index)
	{

Zeile 1169Zeile 1217
	/**
	 * Creates a fulltext index on the specified column in the specified table with optional index name.
	 *

 
	/**
	 * Creates a fulltext index on the specified column in the specified table with optional index name.
	 *

	 * @param string The name of the table.
	 * @param string Name of the column to be indexed.
	 * @param string The index name, optional.

	 * @param string $table The name of the table.
	 * @param string $column Name of the column to be indexed.
	 * @param string $name The index name, optional.

	 */
	function create_fulltext_index($table, $column, $name="")
	{

	 */
	function create_fulltext_index($table, $column, $name="")
	{

Zeile 1181Zeile 1229
	/**
	 * Drop an index with the specified name from the specified table
	 *

 
	/**
	 * Drop an index with the specified name from the specified table
	 *

	 * @param string The name of the table.
	 * @param string The name of the index.

	 * @param string $table The name of the table.
	 * @param string $name The name of the index.

	 */
	function drop_index($table, $name)
	{

	 */
	function drop_index($table, $name)
	{

Zeile 1192Zeile 1240
	/**
	 * Drop an table with the specified table
	 *

 
	/**
	 * Drop an table with the specified table
	 *

	 * @param boolean hard drop - no checking
	 * @param boolean use table prefix


	 * @param string $table The table to drop
	 * @param boolean $hard hard drop - no checking
	 * @param boolean $table_prefix use table prefix

	 */
	function drop_table($table, $hard=false, $table_prefix=true)
	{

	 */
	function drop_table($table, $hard=false, $table_prefix=true)
	{

Zeile 1219Zeile 1268
	/**
	 * Renames a table
	 *

 
	/**
	 * Renames a table
	 *

	 * @param string The old table name
	 * @param string the new table name
	 * @param boolean use table prefix


	 * @param string $old_table The old table name
	 * @param string $new_table the new table name
	 * @param boolean $table_prefix use table prefix
	 * @return mysqli_result

	 */
	function rename_table($old_table, $new_table, $table_prefix=true)
	{

	 */
	function rename_table($old_table, $new_table, $table_prefix=true)
	{

Zeile 1240Zeile 1290
	/**
	 * Replace contents of table with values
	 *

 
	/**
	 * Replace contents of table with values
	 *

	 * @param string The table
	 * @param array The replacements


	 * @param string $table The table
	 * @param array $replacements The replacements
	 * @return mysqli_result|bool

	 */
	function replace_query($table, $replacements=array())
	{

	 */
	function replace_query($table, $replacements=array())
	{

Zeile 1262Zeile 1313
			}
			else
			{

 
			}
			else
			{

				$values .= $comma."`".$column."`='".$value."'";

				$values .= $comma."`".$column."`=".$this->quote_val($value);

			}

			$comma = ',';

			}

			$comma = ',';

Zeile 1279Zeile 1330
	/**
	 * Drops a column
	 *

 
	/**
	 * Drops a column
	 *

	 * @param string The table
	 * @param string The column name


	 * @param string $table The table
	 * @param string $column The column name
	 * @return mysqli_result

	 */
	function drop_column($table, $column)
	{

	 */
	function drop_column($table, $column)
	{

Zeile 1290Zeile 1342
	/**
	 * Adds a column
	 *

 
	/**
	 * Adds a column
	 *

	 * @param string The table
	 * @param string The column name
	 * @param string the new column definition


	 * @param string $table The table
	 * @param string $column The column name
	 * @param string $definition the new column definition
	 * @return mysqli_result

	 */
	function add_column($table, $column, $definition)
	{

	 */
	function add_column($table, $column, $definition)
	{

Zeile 1302Zeile 1355
	/**
	 * Modifies a column
	 *

 
	/**
	 * Modifies a column
	 *

	 * @param string The table
	 * @param string The column name
	 * @param string the new column definition


	 * @param string $table The table
	 * @param string $column The column name
	 * @param string $new_definition the new column definition
	 * @return mysqli_result

	 */
	function modify_column($table, $column, $new_definition)
	{

	 */
	function modify_column($table, $column, $new_definition)
	{

Zeile 1314Zeile 1368
	/**
	 * Renames a column
	 *

 
	/**
	 * Renames a column
	 *

	 * @param string The table
	 * @param string The old column name
	 * @param string the new column name
	 * @param string the new column definition


	 * @param string $table The table
	 * @param string $old_column The old column name
	 * @param string $new_column the new column name
	 * @param string $new_definition the new column definition
	 * @return mysqli_result

	 */
	function rename_column($table, $old_column, $new_column, $new_definition)
	{

	 */
	function rename_column($table, $old_column, $new_column, $new_definition)
	{

Zeile 1327Zeile 1382
	/**
	 * Sets the table prefix used by the simple select, insert, update and delete functions
	 *

 
	/**
	 * Sets the table prefix used by the simple select, insert, update and delete functions
	 *

	 * @param string The new table prefix

	 * @param string $prefix The new table prefix

	 */
	function set_table_prefix($prefix)
	{

	 */
	function set_table_prefix($prefix)
	{

Zeile 1337Zeile 1392
	/**
	 * Fetched the total size of all mysql tables or a specific table
	 *

 
	/**
	 * Fetched the total size of all mysql tables or a specific table
	 *

	 * @param string The table (optional)

	 * @param string $table The table (optional)

	 * @return integer the total size of all mysql tables or a specific table
	 */
	function fetch_size($table='')

	 * @return integer the total size of all mysql tables or a specific table
	 */
	function fetch_size($table='')

Zeile 1361Zeile 1416
	/**
	 * Fetch a list of database character sets this DBMS supports
	 *

 
	/**
	 * Fetch a list of database character sets this DBMS supports
	 *

	 * @return array Array of supported character sets with array key being the name, array value being display name. False if unsupported

	 * @return array|bool Array of supported character sets with array key being the name, array value being display name. False if unsupported

	 */
	function fetch_db_charsets()
	{

	 */
	function fetch_db_charsets()
	{

Zeile 1375Zeile 1430
			'cp850' => 'DOS West European',
			'hp8' => 'HP West European',
			'koi8r' => 'KOI8-R Relcom Russian',

 
			'cp850' => 'DOS West European',
			'hp8' => 'HP West European',
			'koi8r' => 'KOI8-R Relcom Russian',

			'latin1' => 'cp1252 West European',

			'latin1' => 'ISO 8859-1 Latin 1',

			'latin2' => 'ISO 8859-2 Central European',
			'swe7' => '7bit Swedish',
			'ascii' => 'US ASCII',

			'latin2' => 'ISO 8859-2 Central European',
			'swe7' => '7bit Swedish',
			'ascii' => 'US ASCII',

Zeile 1413Zeile 1468
	/**
	 * Fetch a database collation for a particular database character set
	 *

 
	/**
	 * Fetch a database collation for a particular database character set
	 *

	 * @param string The database character set
	 * @return string The matching database collation, false if unsupported

	 * @param string $charset The database character set
	 * @return string|bool The matching database collation, false if unsupported

	 */
	function fetch_charset_collation($charset)
	{

	 */
	function fetch_charset_collation($charset)
	{

Zeile 1497Zeile 1552
	/**
	 * Binary database fields require special attention.
	 *

 
	/**
	 * Binary database fields require special attention.
	 *

	 * @param string Binary value

	 * @param string $string Binary value

	 * @return string Encoded binary value
	 */
	function escape_binary($string)

	 * @return string Encoded binary value
	 */
	function escape_binary($string)

Zeile 1508Zeile 1563
	/**
	 * Unescape binary data.
	 *

 
	/**
	 * Unescape binary data.
	 *

	 * @param string Binary value

	 * @param string $string Binary value

	 * @return string Encoded binary value
	 */
	function unescape_binary($string)

	 * @return string Encoded binary value
	 */
	function unescape_binary($string)