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    mysqli::$server_info

    mysqli::get_server_info

    mysqli_get_server_info

    (PHP 5, PHP 7, PHP 8)

    mysqli::$server_info -- mysqli::get_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;
    public mysqli::get_server_info(): string

    过程化风格

    mysqli_get_server_info(mysqli $mysql): string

    返回字符串，表示 MySQLi 扩展连接的 MySQL 服务器的版本号。

    参数

    mysql

    仅以过程化样式：由 mysqli_connect() 或 mysqli_init() 返回的 mysqli 对象。

    返回值

    表示服务器版本的字符串。

    示例

    示例 #1 $mysqli->server_info 示例

    面向对象风格

    <?php

    mysqli_report    (MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
    $mysqli = new mysqli("localhost", "my_user", "my_password");

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

    过程化风格

    <?php

    mysqli_report    (MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
    $link = mysqli_connect("localhost", "my_user", "my_password");

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

    以上示例的输出类似于：

    Server version: 8.0.21

    参见

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    User Contributed Notes 1 note

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    5
    it-solutions at schultz dot ch
    8 years ago
    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
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