PHP中strtr与str_replace函数运行性能简单测试示例
这篇文章主要介绍了PHP中strtr与str_replace函数运行性能简单测试,结合具体实例形式对比分析了PHP中strtr与str_replace函数的测试运行效率,需要的朋友可以参考下。
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。