php Timer page running time monitoring class-PHP Tutorial-php.cn

php Timer page running time monitoring class, which can monitor different running times according to different keys

##Timer.class.php

getKey($key); $this->_start[$flag] = $this->getMicrotime(); } /** 记录结束时间 * @param String $key 标记 */ public function end($key=''){ $flag = $this->getKey($key); $this->_end[$flag] = $this->getMicrotime(); } /** 计算运行时间 * @param String $key 标记 * @return float */ public function getTime($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; } } /** 输出页面运行时间 * @param String $key 标记 * @return String */ public function printTime($key=''){ printf("%srun time %f ms\r\n", $key==''? $key : $key.' ', $this->getTime($key)*1000); } /** 获取key * @param String $key 标记 * @return String */ private function getKey($key=''){ if($key==''){ return $this->_default_key; }else{ return $this->_prefix.$key; } } /** 获取microtime */ private function getMicrotime(){ list($usec, $sec) = explode(' ', microtime()); return (float)$usec + (float)$sec; } } // class end ?>

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demo：

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(); ?>

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demo running output:

program1 run time 163.285971 ms program2 run time 100.347042 ms run time 264.035940 ms

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