mysqli::$server_info

mysqli_get_server_info

(PHP 5, PHP 7, PHP 8)

mysqli::$server_info -- mysqli_get_server_info — 返回MySQL服务器的版本号

说明

面向对象风格

string $mysqli->server_info;

过程化风格

mysqli_get_server_info ( mysqli $link ) : string

返回一个字符串，表述MySQLi扩展连接的MySQL服务器的版本号.

参数

link

仅以过程化样式：由mysqli_connect() 或 mysqli_init() 返回的链接标识。

返回值

一个特征字符串，表述服务器的版本.

范例

Example #1 $mysqli->server_info 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 server version */
printf("Server version: %s\n", $mysqli->server_info);

/* 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 server version */
printf("Server version: %s\n", mysqli_get_server_info($link));

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

以上例程会输出：

Server version: 4.1.2-alpha-debug

参见

User Contributed Notes

it-solutions at schultz dot ch 11-Feb-2016 09:46
Please note that this property returns different versionstrings for MariaDB instances on LINUX and WINDOWS environments.

For a MariaDB instance 10.0.17:

on LINUX, this returns strings like "10.0.17-MariaDB-log"
on WINDOWS environments, this returns strings like "5.5.5-10.0.17-MariaDB-log"

To avoid this extra "5.5.5" on windows environments, you could use the SQL query "select version();" rather than this property of the mysqli extension