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HOME > PHP Manual > mysqli->protocol_version - Returns the version of the MySQL protocol used

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mysqli->protocol_version

mysqli_get_proto_info

(PHP 5)

mysqli->protocol_version -- mysqli_get_proto_info — Returns the version of the MySQL protocol used

Description

Object oriented style (property):

mysqli

string $protocol_version;

Procedural style:

int mysqli_get_proto_info ( mysqli $link )

Returns an integer representing the MySQL protocol version used by the connection represented by the link parameter.

Parameters

link: Procedural style only: A link identifier returned by mysqli_connect() or mysqli_init()

Return Values

Returns an integer representing the protocol version.

Examples

Example #1 Object oriented style


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

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

/* print protocol version */
printf("Protocol version: %d\n", $mysqli->protocol_version);

/* close connection */
$mysqli->close();
?>

Example #2 Procedural style


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

/* check connection */
if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

/* print protocol version */
printf("Protocol version: %d\n", mysqli_get_proto_info($link));

/* close connection */
mysqli_close($link);
?>

The above example will output:

Protocol version: 10

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