php计算页面执行了多长时间代码
<?php
function test() {
list($a, $b) = explode(" ", microtime());
return (float)$a + (float)$b;
}
//代码如下:
$a = test();
echo $a;
$time = sprintf("%.12f", (double)test() - $a);
//方法二,代码如下:
function ss_timing_start($name = 'default') {
global $ss_timing_start_times;
$ss_timing_start_times[$name] = explode(' ', microtime());
}
function ss_timing_stop($name = 'default') {
global $ss_timing_stop_times;
$ss_timing_stop_times[$name] = explode(' ', microtime());
}
function ss_timing_current($name = 'default') {
global $ss_timing_start_times, $ss_timing_stop_times;
if (!isset($ss_timing_start_times[$name])) {
return 0;
}
if (!isset($ss_timing_stop_times[$name])) {
$stop_time = explode(' ', microtime());
} else {
$stop_time = $ss_timing_stop_times[$name];
}
// do the big numbers first so the small ones aren't lost
$current = $stop_time[1] - $ss_timing_start_times[$name][1];
return $current;
}
ss_timing_start();
/**
以下是你的页面的代码
*/
require_once 'index.php教程'; //index.php是要测试执行时间的页面
/*
页面代码结束
*/
ss_timing_stop();
//方法三,代码如下:
class timer {
var $starttime = 0;
var $stoptime = 0;
var $timespent = 0;
function start() {
$this->starttime = microtime();
}
function stop() {
$this->stoptime = microtime();
}
function spent() {
if ($this->timespent) {
return $this->timespent;
} else {
$startmicro = substr($this->starttime, 0, 10);
$startsecond = substr($this->starttime, 11, 10);
$stopmicro = substr($this->stoptime, 0, 10);
$stopsecond = substr($this->stoptime, 11, 10);
$start = doubleval($startmicro) + $startsecond;
$stop = doubleval($stopmicro) + $stops教程econd;
$this->timespent = $stop - $start;
return substr($this->timespent, 0, 8) . "秒";
}
} // end function spent();
} //end class timer;
//例子
$timer = new timer;
$timer->start();
/*
你的代码放在此处
*/
$timer->stop();
echo "执行本script共" . $timer->spent();本文地址:http://www.phprm.com/develop/fs4355.html
转载随意,但请附上文章地址:-)