PHP mysqli_ping()Function

PHP MySQLi 参考手册PHP MySQLi Reference Manual

Detect server connection:

<?php 
// 假定数据库用户名：root，密码：123456，数据库：EXAMPLE 
$con=mysqli_connect("localhost","root","123456","EXAMPLE"); 
if (mysqli_connect_errno($con)) 
{ 
    echo "连接 MySQL 失败: " . mysqli_connect_error(); 
} 

// 检测 MySQL 服务器是否可用
if (mysqli_ping($con))
{
    echo "连接正常!";
}
else
{
    echo "错误: ". mysqli_error($con);
}

mysqli_close($con);
?>

Definition and Usage

The mysqli_ping() function performs a server connection, and attempts to reconnect if the connection has been lost.

Syntax

mysqli_ping(connection);

Parameters Description
connection Required. Specifies the MySQL connection to use.

Technical Details

Return value: Returns TRUE on success, or FALSE on failure.
PHP Version: 5+

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