This article mainly introduces the Timer page running time monitoring class implemented by php, which can detect different running times by different keys, for more information about how to monitor the running time of Timer pages implemented by php, see the example in this article. it is a very practical PHP file. Share it with you for your reference. The specific analysis is as follows:
This php Timer page runtime monitoring class can monitor different runtime according to different keys.
The Timer. class. php class file is as follows:
<? Php/** Timer class: calculates the page running time. different running times can be calculated based on different keys * Date: * Author: fdipzone * Ver: 1.0 ** Func: * public start record start time * public end record end time * public getTime calculation run time * pulbic printTime output run time * private getKey get key * private getMicrotime get microtime */class Timer {/ /class start private $ _ start = array (); private $ _ end = array (); private $ _ default_key = 'timer'; private $ _ prefix = 'timer _'; /** Record start time * @ param String $ key mark */public function start ($ key = '') {$ flag = $ this-> getKey ($ key ); $ this-> _ start [$ flag] = $ this-> getMicrotime ();} /** record end time * @ param String $ key mark */public function end ($ key = '') {$ flag = $ this-> getKey ($ key ); $ this-> _ end [$ flag] = $ this-> getMicrotime ();} /** computing run time * @ param String $ key mark * @ return float */public function getTime ($ key = '') {$ flag = $ this-> getKey ($ Key); if (isset ($ this-> _ end [$ flag]) & isset ($ this-> _ start [$ flag]) {return (float) ($ this-> _ end [$ flag]-$ this-> _ start [$ flag]);} else {return 0 ;}} /** output page running time * @ param String $ key mark * @ return String */public function printTime ($ key = '') {printf ("% srun time % f ms \ r \ n", $ key = ''? $ Key: $ key. '', $ this-> getTime ($ key) * 1000 );} /** Get key * @ param String $ key mark * @ return String */private function getKey ($ key = '') {if ($ key = '') {return $ this-> _ default_key;} else {return $ this-> _ prefix. $ key ;}}/** get microtime */private function getMicrotime () {list ($ usec, $ sec) = explode ('', microtime ()); return (float) $ usec + (float) $ sec ;}// class end?>
The demo code is as follows:
<?php require 'Timer.class.php'; $timer = new Timer(); $timer->start(); $timer->start('program1'); usleep(mt_rand(100000,500000)); $timer->end('program1'); $timer->printTime('program1'); $timer->start('program2'); usleep(mt_rand(100000,500000)); $timer->end('program2'); $timer->printTime('program2'); $timer->end(); $timer->printTime(); ?>
Demo Running output:
program1 run time 163.285971 ms program2 run time 100.347042 ms run time 264.035940 ms
Click here to download the complete instance source code.
I hope this article will help you with PHP programming.