PHP中strtr与str_replace函数运行性能简单测试示例
人气:0本文实例讲述了PHP中strtr与str_replace函数运行性能简单测试。分享给大家供大家参考,具体如下:
strtr与str_replace函数性能,很简单的一个测试,只是简单的测下,供参考,代码如下:
<?php require_once('Timer.php'); $target = 'qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./qwertyuiop[]asdfghjkl;\'zxcvbnm,./'; $count = isset($argv[1]) ? (int)$argv[1] : 1; $needle = 'vb'; Timer::getInstance()->begin(); for($i = 0; $i < $count; $i++) { strtr($target, $needle, '*'); } echo "strtr exec {$count} times used time: " . Timer::getInstance()->end()->gone() . " sec.\n"; //---------------------------------------------------------------------------------------------- Timer::getInstance()->begin(); for($i = 0; $i < $count; $i++) { str_replace($needle, '*', $target); } echo "str_replace exec {$count} times used time: " . Timer::getInstance()->end()->gone() . " sec.\n";
结果如下:
那个正则替换的那个就不测了,应该是赶不上这两个的。
希望本文所述对大家PHP程序设计有所帮助。
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