一、在PHP中替换有三种方式
1、strstr
2、str_replace
3、preg_match

都可满足你的需要

二、效率

 "")); } return $new_string; } function f2_str_replace() { for($i=0; $i<1000000; ++$i) { $new_string = str_replace( ".com", "", "aboutdealers.com"); } return $new_string; } $start = microtime(true); $strtr = f1_strtr(); $stop = microtime(true); $time_strtr = $stop - $start; $start = microtime(true); $str_replace = f2_str_replace(); $stop = microtime(true); $time_str_replace = $stop - $start; echo 'time strtr : ' . $time_strtr . "\tresult :" . $strtr . "\n"; echo 'time str_replace : ' . $time_str_replace . "\tresult :" . $str_replace . "\n"; echo 'time strtr > time str_replace => ' . ($time_strtr > $time_str_replace); ?> -------------------------------------- time strtr : 3.9719619750977 result :aboutdealers time str_replace : 2.9930369853973 result :aboutdealers time strtr > time str_replace => 1 str_replace is faster than strtr

效率上 str_replace > strtr > preg_match

三、str_replace与strtr的一些不同

Be careful when replacing characters (or repeated patterns in the FROM and TO arrays): For example:  I would expect as result: "ZDDB" However, this return: "ZDDD" (Because B = D according to our array) To make this work, use "strtr" instead:  "A","2" => "B","3" => "C","B" => "D"); $word = "ZBB2"; echo strtr($word,$arr); ?> This returns: "ZDDB"

四、结论

所以一般用str_replace , 需要正匹配的时候用preg_match

http://php.net/manual/en/function.str-replace.php
http://php.net/manual/zh/function.strtr.php

http://www.w3school.com.cn/php/func_string_str_replace.asp

用str_replace函数传入数组即可

$str = '我们的祖国是花园,花园的花朵真鲜艳'; $result = str_replace(array('祖国','花朵'), array('motherland','flowers'), $str); echo $result;

PHP自带的字符串替换函数就完全满足你的要求了 建议有需求前去看下官方的手册 很多功能都有函数支持了