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php实现用于计算执行时间的类实例

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WBOYOriginal
2016-06-06 20:05:071272browse

这篇文章主要介绍了php实现用于计算执行时间的类,实例分析了php计算运行实现的类实例与相关使用技巧,非常具有实用价值,需要的朋友可以参考下

本文实例讲述了php实现用于计算执行时间的类。分享给大家供大家参考。具体如下:

有了这个php类,,计算函数或者一段代码的执行时间就简单了

t_start = microtime(); } function stop() { $this->t_stop = microtime(); } function elapsed() { if ($this->t_elapsed) { return $this->t_elapsed; } else { $start_u = substr($this->t_start,0,10); $start_s = substr($this->t_start,11,10); $stop_u = substr($this->t_stop,0,10); $stop_s = substr($this->t_stop,11,10); $start_total = doubleval($start_u) + $start_s; $stop_total = doubleval($stop_u) + $stop_s; $this->t_elapsed = $stop_total - $start_total; return $this->t_elapsed; } } }; ?>

用法示例如下:

start(); echo "


"; $timer->stop(); echo $timer->elapsed(); ?>

希望本文所述对大家的php程序设计有所帮助。

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