Php/docs/mysqli.get-proto-info
mysqli::$protocol_version
mysqli_get_proto_info
(PHP 5, PHP 7)
mysqli::$protocol_version -- mysqli_get_proto_info — 返回MySQL使用的协议版本号
说明
面向对象风格
string $mysqli->protocol_version
;
过程化风格
mysqli_get_proto_info
( mysqli $link
) : int
返回一个整数,表述 被link
参数所表述的连接 所使用的MySQL协议的版本号.
返回值
返回一个整数来表述协议的版本号.
范例
Example #1 $mysqli->protocol_version
example
面向对象风格
<?php$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();?>
过程化风格
<?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);?>
以上例程会输出:
Protocol version: 10