mysqli::$server_info()

(PHP 5, PHP 7)

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_infoexample

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

• mysqli_get_client_info() 获取 MySQL 客户端信息
• mysqli_get_client_version()作为一个整数返回MySQL客户端的版本
• mysqli_get_server_version() 作为一个整数返回MySQL服务器的版本

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