update : 2015.11.03
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Returns the version of the MySQL protocol used
mysqli
PHP Manual

mysqli::$protocol_version

mysqli_get_proto_info

(PHP 5)

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

설명

객체 기반 형식

string $mysqli->protocol_version;

절차식 형식

int mysqli_get_proto_info ( mysqli $link )

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

인수

link

순차 형식 전용: mysqli_connect()나 mysqli_init()가 반환한 연결 식별자.

반환값

Returns an integer representing the protocol version.

예제

Example #1 $mysqli->protocol_version example

객체 기반 형식

<?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();
?>

절차식 형식

<?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);
?>

위 예제들의 출력:

Protocol version: 10

참고

mysqli
PHP Manual