MySQL 函数
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mysql_stat

(PHP 4 >= 4.3.0, PHP 5)

mysql_stat — 取得当前系统状态

说明

string mysql_stat ([ resource $link_identifier ] )

mysql_stat() 返回当前服务器状态。

Note:

mysql_stat() 目前只返回 uptime，threads，queries，open tables，flush tables 和 queries per second。要得到其它状态变量的完整列表，只能使用 SQL 命令 SHOW STATUS。

Example #1 mysql_stat() 例子

<?php
$link = mysql_connect('localhost', "mysql_user", "mysql_password");
$status = explode('  ', mysql_stat($link));
print_r($status);
?>

以上例子将产生如下输出： 

Array
(
    [0] => Uptime: 5380
    [1] => Threads: 2
    [2] => Questions: 1321299
    [3] => Slow queries: 0
    [4] => Opens: 26
    [5] => Flush tables: 1
    [6] => Open tables: 17
    [7] => Queries per second avg: 245.595
)

MySQL 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: 取得当前系统状态

用户评论:

billbilljr at gmail dot com (06-Jan-2011 07:46)

The following script can be used to clearly print out the results of mysql_stat().

<?php
    mysql_connect("localhost", "username", "password");
    $array = explode("  ", mysql_stat());
    foreach ($array as $value){
        echo $value . "<br />";
    }
?>

Outputs something similar to:

Uptime: 698
Threads: 1
Questions: 4
Slow queries: 0
Opens: 19
Flush tables: 1
Open tables: 12
Queries per second avg: 0.5

Topper_ (02-Sep-2008 09:51)

<?php

    $mysql_stat=mysql_stat($dbconnect);
   
    $tot_count=preg_match_all('/([a-z ]+):\s*([0-9.]+)/i', $mysql_stat, $matches);

    for ($i=0; $i<$tot_count; $i++) {
        $info1=$matches[1][$i];
        $info2=$matches[2][$i];
       
        echo "$info1 ($info2)<br>";
    }

/*
example output:

Uptime (13651)
Threads (1)
Questions (12910)
Slow queries (0)
Opens (314)
Flush tables (1)
Open tables (24)
Queries per second avg (0.945)

*/

?>

Enzo_01 at abv dot bg (31-May-2008 08:22)

<?php
// function that return stat elements into array
function mysql_stat_array($A=null) {
    $status = explode('  ', mysql_stat());
    foreach($status as $k=>$v) { $v=explode(':',$v,2); $status[$v[0]]=$v[1]; }
    return (isset($status[$A])?$status[$A]:$status);
}
/*
example return:
Array ( [0] => Uptime: 385815 [1] => Threads: 1 [2] => Questions: 3515 [3] => Slow queries: 0 [4] => Opens: 32 [5] => Flush tables: 1 [6] => Open tables: 8 [7] => Queries per second avg: 0.009 [Uptime] => Array ( [0] => Uptime [1] => 385815 ) [Threads] => Array ( [0] => Threads [1] => 1 ) [Questions] => Array ( [0] => Questions [1] => 3515 ) [Slow queries] => Array ( [0] => Slow queries [1] => 0 ) [Opens] => Array ( [0] => Opens [1] => 32 ) [Flush tables] => Array ( [0] => Flush tables [1] => 1 ) [Open tables] => Array ( [0] => Open tables [1] => 8 ) [Queries per second avg] => Array ( [0] => Queries per second avg [1] => 0.009 ) )
*/

?>

(09-Feb-2005 02:16)

if you need the complete status as outputted by the "show status" command. Try this function.
<?
function mysql_status($db=NULL) {
if(!mysql_ping($db))
$db=mysql_connect("localhost","user","password");
$res=mysql_query("show status",$db);
while (list($key,$value)=mysql_fetch_array($res))
$sql[$key]=$value;
return $sql;
}
?>