php man page for mysql_get_proto_info

MYSQL_GET_PROTO_INFO(3) 						 1						   MYSQL_GET_PROTO_INFO(3)

mysql_get_proto_info - Get MySQL protocol info

SYNOPSIS
       Warning

	      This  extension  is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should
	      be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:

		     omysqli_get_proto_info(3)

       int mysql_get_proto_info ([resource  $link_identifier = NULL])

DESCRIPTION
	Retrieves the MySQL protocol.

	      o $
		link_identifier -The MySQL connection. If the link identifier is not specified,  the  last  link  opened  by  mysql_connect(3)	is
		assumed. If no such link is found, it will try to create one as if mysql_connect(3) was called with no arguments. If no connection
		is found or established, an E_WARNING level error is generated.

	Returns the MySQL protocol on success or FALSE on failure.

       Example #1

	      mysql_get_proto_info(3) example

	      <?php
	      $link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
	      if (!$link) {
		  die('Could not connect: ' . mysql_error());
	      }
	      printf("MySQL protocol version: %s
", mysql_get_proto_info());
	      ?>

	      The above example will output something similar to:

	      MySQL protocol version: 10

       mysql_get_client_info(3), mysql_get_host_info(3), mysql_get_server_info(3).

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