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43 lines
806 B
43 lines
806 B
<?php
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/**
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* 计算脚本运行时间
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*/
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class Tool_Runtime {
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public $start = 0;
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static $instance;
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/**
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* 单例
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* @return Cache_File
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*/
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static function &instance() {
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if (self::$instance === null) {
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self::$instance = new Tool_Runtime();
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}
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return self::$instance;
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}
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/**
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* 当前时间
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*/
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function get_microtime() {
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list($usec, $sec) = explode(' ', microtime());
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return ((float)$usec + (float)$sec);
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}
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/**
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* 开始计时
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*/
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static function start(){
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$instance = &self::instance();
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$instance->start = $instance->get_microtime();
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}
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/**
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* 结束计时，并返回执行时间
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*/
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static function stop() {
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$instance = &self::instance();
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return round(($instance->get_microtime() - $instance->start) * 1000, 1);
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}
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} |