PHP str_replace有超过13个字符的限制吗？ [英] Does PHP str_replace have a greater than 13 character limit?

问题描述

这直到第13个字符被击中。一旦str_ireplace命中了cyper数组中的a，str_ireplace就会停止工作。

This works up until the 13th character is hit. Once the str_ireplace hits "a" in the cyper array, the str_ireplace stops working.

数组有多大？记住，如果输入abgf我得到nots，但如果我输入abgrf，当我应该得到笔记我得到notrs。

Is there a limit to how big the array can be? Keep in mind if type "abgf" i get "nots", but if I type "abgrf" when I should get "notes" I get "notrs". Racked my brain cant figure it out.

$_cypher = array("n","o","p","q","r","s","t","u","v","w","x","y","z","a","b","c","d","e","f","g","h","i","j","k","l","m");

$_needle = array("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z");


$_decryptedText = str_ireplace($_cypher, $_needle, $_text);
echo $_decryptedText;

帮助？

推荐答案

使用 strtr ：

$_text = 'abgrf';

$translate = array_combine($_cypher, $_needle);

$_decryptedText = strtr($_text, $translate);

echo $_decryptedText; # notes

演示

是错误的？

But, was there something I was doing wrong?

它将替换每对，一对接一对替换已经替换的字符串。因此，如果您替换了您要重新替换的字符，可能会发生这种情况：

It will replace each pair, one pair after the other on the already replaced string. So if you replace a character that you replace again, this can happen:

    r -> e   e -> r
abgrf -> notes -> notrs

您的电子换货是您的换货后。

Your e-replacement comes after your r-replacement.

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