PHP protocol_version() / mysqli_get_proto_info() Function

Example - Object Oriented style

Return the MySQL protocol version:

<?php
$mysqli = new mysqli("localhost","my_user","my_password","my_db");

if ($mysqli -> connect_errno) {
echo "Failed to connect to MySQL: " . $mysqli -> connect_error;
exit();
}

echo $mysqli -> protocol_version;

$mysqli -> close();
?>

Look at example of procedural style at the bottom.

Definition and Usage

The mysqli_get_proto_info() function returns the MySQL protocol version.

Syntax

Object oriented style:

$mysqli -> protocol_version

Procedural style:

mysqli_get_proto_info( connection)

Parameter Values

Parameter	Description
connection	Required. Specifies the MySQL connection to use

Technical Details

Return Value:	Returns an integer that represents the MySQL protocol version
PHP Version:	5+

Example - Procedural style

Return the MySQL protocol version:

<?php
$con = mysqli_connect("localhost","my_user","my_password","my_db");

if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
exit();
}

echo mysqli_get_proto_info($con);

mysqli_close($con);
?>

❮ PHP MySQLi Reference