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