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MySQL PHP API  /  ...  /  mysql_get_proto_info

5.5.28 mysql_get_proto_info

Copyright 1997-2014 the PHP Documentation Group.

  • mysql_get_proto_info

    Get MySQL protocol info


This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. 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:



int mysql_get_proto_info(resource link_identifier= =NULL);

Retrieves the MySQL protocol.



The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect is assumed. If no such link is found, it will try to create one as if mysql_connect had been called with no arguments. If no connection is found or established, an E_WARNING level error is generated.

Return Values

Returns the MySQL protocol on success or FALSE on failure.


Example 5.35 mysql_get_proto_info example

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


The above example will output something similar to:

MySQL protocol version: 10

See Also


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