mysqli::stat

mysqli_stat

(PHP 5)

mysqli::stat -- mysqli_stat — Gets the current system status

说明

面向对象风格

string mysqli::stat ( void )

过程化风格

string mysqli_stat ( mysqli $link )

mysqli_stat() returns a string containing information similar to that provided by the 'mysqladmin status' command. This includes uptime in seconds and the number of running threads, questions, reloads, and open tables.

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

A string describing the server status. FALSE if an error occurred.

范例

Example #1 mysqli::stat() example

面向对象风格

  <?php
$mysqli  = new  mysqli ( "localhost" ,  "my_user" ,  "my_password" ,  "world" );

 
 if ( mysqli_connect_errno ()) {
     printf ( "Connect failed: %s\n" ,  mysqli_connect_error ());
    exit();
}

 printf  ( "System status: %s\n" ,  $mysqli -> stat ());

 $mysqli -> close ();
 ?>

过程化风格

  <?php
$link  =  mysqli_connect ( "localhost" ,  "my_user" ,  "my_password" ,  "world" );

 
 if ( mysqli_connect_errno ()) {
     printf ( "Connect failed: %s\n" ,  mysqli_connect_error ());
    exit();
}

 printf ( "System status: %s\n" ,  mysqli_stat ( $link ));

 mysqli_close ( $link );
 ?>

以上例程会输出：

System status: Uptime: 272  Threads: 1  Questions: 5340  Slow queries: 0
Opens: 13  Flush tables: 1  Open tables: 0  Queries per second avg: 19.632
Memory in use: 8496K  Max memory used: 8560K

参见

mysqli_get_server_info() - 返回MySQL服务器的版本号