如何在PHP中同时替换2个字符串（使用eachother） [英] How to replace 2 strings (with eachother) simultaneously in PHP

问题描述

我想要做的事情非常简单，但我期待最有效地做到这一点，最好使用php builtin fns。

What I'm trying to do is very simple, but I'm looking to do it most efficiently, preferably using php builtin fns.

$str = '1234';
echo replace_function(array('1','3'),array('3','1'),$str);

// output: 3214

str_replace，preg_replace会导致1214，这意味着它会遍历数组，替换匹配的字符串。我正在寻找一种解决方案，以同时切换这两个（或更多）字符串。

str_replace,preg_replace would result in 1214, which means it goes through the arrays, replacing matched strings. I'm looking for a solution to simultaneously "switch" these two (or more) strings.

有什么想法？

any ideas?

推荐答案

您需要字符串翻译：
http://php.net/manual/en/function.strtr.php

<?php
$trans = array("hello" => "hi", "hi" => "hello");
echo strtr("hi all, I said hello", $trans);
// = hello all, I said hi
?> 

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