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mysqlnd_uh_set_connection_proxy(3) [php man page]

MYSQLND_UH_SET_CONNECTION_PROXY(3)					 1					MYSQLND_UH_SET_CONNECTION_PROXY(3)

mysqlnd_uh_set_connection_proxy - Installs a proxy for mysqlnd connections

SYNOPSIS

       bool mysqlnd_uh_set_connection_proxy (MysqlndUhConnection  &$connection_proxy, [mysqli  &$mysqli_connection])

DESCRIPTION

	Installs  a  proxy  object  to hook mysqlnd's connection objects methods. Once installed, the proxy will be used for all MySQL connections
       opened with mysqli, mysql or PDO_MYSQL, assuming that the listed extensions are compiled to use the mysqlnd library.

	The function can be disabled with mysqlnd_uh.enable. If mysqlnd_uh.enable is set to FALSE the function will  not  install  the	proxy  and
       always  return  TRUE.  Additionally,  an  error	of  the  type  E_WARNING  may  be  emitted.  The  error message may read like PHP Warning:
       mysqlnd_uh_set_connection_proxy():  (Mysqlnd  User  Handler)  The  plugin  has  been  disabled  by  setting  the  configuration	 parameter
       mysqlnd_uh.enable = false. The proxy has not been installed [...].

PARAMETERS

	      o $connection_proxy
		- A proxy object of type MysqlndUhConnection.

	      o $mysqli_connection
		- Object of type mysqli. If given, the proxy will be set for this particular connection only.

RETURN VALUES

	Returns TRUE on success. Otherwise, returns FALSE

EXAMPLES

       Example #1

	      mysqlnd_uh_set_connection_proxy(3) example

	      <?php
	      $mysqli = new mysqli("localhost", "root", "", "test");
	      $mysqli->query("SELECT 'No proxy installed, yet'");

	      class proxy extends MysqlndUhConnection {
	       public function query($res, $query) {
		 printf("%s(%s)
", __METHOD__, var_export(func_get_args(), true));
		 $ret = parent::query($res, $query);
		 printf("%s returns %s
", __METHOD__, var_export($ret, true));
		 return $ret;
	       }
	      }
	      mysqlnd_uh_set_connection_proxy(new proxy());

	      $mysqli->query("SELECT 'mysqlnd rocks!'");

	      $mysql = mysql_connect("localhost", "root", "", "test");
	      mysql_query("SELECT 'Ahoy Andrey!'", $mysql);

	      $pdo = new PDO("mysql:host=localhost;dbname=test", "root", "");
	      $pdo->query("SELECT 'Moin Johannes!'");
	      ?>

	      The above example will output:

	      proxy::query(array (
		0 => NULL,
		1 => 'SELECT 'mysqlnd rocks!'',
	      ))
	      proxy::query returns true
	      proxy::query(array (
		0 => NULL,
		1 => 'SELECT 'Ahoy Andrey!'',
	      ))
	      proxy::query returns true
	      proxy::query(array (
		0 => NULL,
		1 => 'SELECT 'Moin Johannes!'',
	      ))
	      proxy::query returns true

SEE ALSO

       mysqlnd_uh_set_statement_proxy(3), mysqlnd_uh.enable.

PHP Documentation Group 											MYSQLND_UH_SET_CONNECTION_PROXY(3)

Check Out this Related Man Page

MYSQLND_MS_GET_LAST_GTID(3)						 1					       MYSQLND_MS_GET_LAST_GTID(3)

mysqlnd_ms_get_last_gtid - Returns the latest global transaction ID

SYNOPSIS

       string mysqlnd_ms_get_last_gtid (mixed  $connection)

DESCRIPTION

	Returns a global transaction identifier which belongs to a write operation no older than the last write performed by the client. It is not
       guaranteed that the global transaction identifier is identical to that one created for the last write transaction performed by the client.

PARAMETERS

	      o $connection
		- A PECL/mysqlnd_ms connection handle to a MySQL server of the type PDO_MYSQL, mysqli> or  ext/mysql.  The  connection	handle	is
		obtained  when	opening  a  connection	with a host name that matches a mysqlnd_ms configuration file entry using any of the above
		three MySQL driver extensions.

RETURN VALUES

	Returns a global transaction ID (GTID) on success. Otherwise, returns FALSE.

	The function mysqlnd_ms_get_last_gtid(3) returns the GTID obtained when executing the SQL statement from the fetch_last_gtid entry of  the
       global_transaction_id_injection section from the plugins configuration file.

	The function may be called after the GTID has been incremented.

NOTES

       Note

	      mysqlnd_ms_get_last_gtid(3)  requires  PHP  >= 5.4.0 and PECL mysqlnd_ms >= 1.2.0. Internally, it is using a mysqlnd library C func-
	      tionality not available with PHP 5.3.

	       Please note, all MySQL 5.6 production versions do not provide clients with enough information to use GTIDs  for	enforcing  session
	      consistency. In the worst case, the plugin will choose the master only.

EXAMPLES

       Example #1

	      mysqlnd_ms_get_last_gtid(3) example

	      <?php
	      /* Open mysqlnd_ms connection using mysqli, PDO_MySQL or mysql extension */
	      $mysqli = new mysqli("myapp", "username", "password", "database");
	      if (!$mysqli)
		/* Of course, your error handling is nicer... */
		die(sprintf("[%d] %s
", mysqli_connect_errno(), mysqli_connect_error()));

	      /* auto commit mode, transaction on master, GTID must be incremented */
	      if (!$mysqli->query("DROP TABLE IF EXISTS test"))
		die(sprintf("[%d] %s
", $mysqli->errno, $mysqli->error));

	      printf("GTID after transaction %s
", mysqlnd_ms_get_last_gtid($mysqli));

	      /* auto commit mode, transaction on master, GTID must be incremented */
	      if (!$mysqli->query("CREATE TABLE test(id INT)"))
		die(sprintf("[%d] %s
", $mysqli->errno, $mysqli->error));

	      printf("GTID after transaction %s
", mysqlnd_ms_get_last_gtid($mysqli));
	      ?>

SEE ALSO

       Global Transaction IDs.

PHP Documentation Group 											       MYSQLND_MS_GET_LAST_GTID(3)
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