mysqli
PHP Manual

mysqli_get_proto_info

mysqli->protocol_version

(No version information available, might be only in CVS)

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

说明

Procedural style:

int mysqli_get_proto_info ( mysqli $link )

Object oriented style (property):

mysqli
string$protocol_version;

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

参数

link

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

返回值

Returns an integer representing the protocol version.

范例

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);
?>

上例将输出:

Protocol version: 10

参见


mysqli
PHP Manual