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Homephp教程php手册PHP获取脚本运行时间

header("content-type:text/html;charset=utf-8");

//microtime— 返回当前 Unix 时间戳和微秒数

$oldtime = microtime(true);

echo "本脚本运行的时间为:";

$v=0;

for ($i = 0; $i

$v++;

}

$newtime =microtime(true);

//获取时间差

$runtime = $newtime-$oldtime;

//将时间戳变为字符串—var_export 输出或返回一个变量的字符串表示

$runtime=var_export($runtime);

//截取字符串substr_count计算字串出现的次数

$postion = substr_count($runtime, 'E');

$runtime = substr($runtime,0,$postion-1);

//将字符串值转换为floatfloatval — 获取变量的浮点值

$runtime = floatval($runtime)/1000;

echo $runtime."秒";

?>



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