php 服务器整数,浮点,数据IO能力测试函数

php教程服务器整数,浮点,数据IO能力测试函数
//下面提供一三个针对函数来测试服务器的整数运算能力测试, 浮点运算能力测试和数据IO能力测试哦。

    function test_int()
    {
        $timeStart = gettimeofday();
        for($i = 0; $i < 3000000; $i++);
        {
            $t = 1+1;
        }
        $timeEnd = gettimeofday();
        $time = ($timeEnd["usec"]-$timeStart["usec"])/1000000+$timeEnd["sec"]-$timeStart["sec"];
        $time = round($time, 3)."秒";
        return $time;
    }

/*--------
浮点运算能力测试
----------*/

function test_float()
    {
        $t = pi();
        $timeStart = gettimeofday();
        for($i = 0; $i < 3000000; $i++);
        {
            sqrt($t);
        }
        $timeEnd = gettimeofday();
        $time = ($timeEnd["usec"]-$timeStart["usec"])/1000000+$timeEnd["sec"]-$timeStart["sec"];
        $time = round($time, 3)."秒";
        return $time;
    }

/*-----
数据IO能力测试
-----*/

    function test_io()
    {
        $fp = fopen(PHPSELF, "r");
        $timeStart = gettimeofday();
        for($i = 0; $i < 10000; $i++)
        {
            fread($fp, 10240);
            rewind($fp);
        }
        $timeEnd = gettimeofday();
        fclose($fp);
        $time = ($timeEnd["usec"]-$timeStart["usec"])/1000000+$timeEnd["sec"]-$timeStart["sec"];
        $time = round($time, 3)."秒";
        return($time);
    }

/*
很多公司都自己写了相关的服务器针探测试工具，我们为你提供的只是三种简的整型运算，浮点运算，与io数据输出压力测试。

补充：Php教程,Php常用代码