本文介绍了str_replace 与数组的意外行为的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下函数，使用 str_replace 会产生意想不到的结果
I've the following function and using str_replace gives an unexpected result
function repo($text) {
$search = array("0","1","2","3","4","5","6","7","8","9");
$replace = array("z30","z31","z32","z33","z34","z35","z36","z37","z38","z99");
$text = str_replace($search,$replace,$text);
return $text;
}
echo repo('0');
预期的答案是
z30
相反，我得到
zz330
我做错了什么?
推荐答案
你的函数就是这样工作的.
Your function works this way.
0 更改为 z30，php 继续循环数组，然后 z30 包含 '3'，3 更改为 z33.因此返回 'z' + 'z33' + '0' = zz330.
0 changes to z30, php continues loop the arrays, then z30 contains '3', and 3 changes to z33.Because of that returns 'z' + 'z33' + '0' = zz330.
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