PHP Timer page run time monitoring class

PHP Timer page run time monitoring class, can be different keys to monitor the different running time

Timer.class.php

<?php/** Timer class, calculates the page run time, can calculate different running time according to different key * date:2014-02-28* author:fdipzone* ver:1.0** func:* p   Ublic start record Starting 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 $key Tag */Public Function start ($key = ') {$flag = $this->getkey ($key);    $this->_start[$flag] = $this->getmicrotime ();        }/** record End time * @param String $key Tag */Public Function end ($key = ') {$flag = $this->getkey ($key);    $this->_end[$flag] = $this->getmicrotime (); /** Calculation Run time * @param String $key tag * @return float */Public Function getTime ($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 run time * @param string $key tag * @return String */Public Function printtime ($key = ') { printf ("%srun time%f ms\r\n", $key = = '? $key: $key. '    ', $this->gettime ($key) *1000); /** gets the key * @param string $key tag * @return String */Private Function GetKey ($key = ") {if ($key =        = ') {return $this->_default_key;        }else{return $this->_prefix. $key;        }}/** gets microtime */Private Function Getmicrotime () {list ($usec, $sec) = Explode (', microtime ());    return (float) $usec + (float) $sec; }}//Class end?>

Demo

<?phprequire ' 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 Run output:

Program1 run time 163.285971 msprogram2 run time 100.347042 msrun time 264.035940 ms

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