的preg_replace [{和}]

Question

我有这个字符串：

$string='My String [{Text_001}] My String [{Text_002}] ';

我想用的preg_replace [{事}]由$的东西（如更换：[{Text_001}] - > $ Text_001 ）。

我有我的preg_replace错误：

$string = preg_replace('/([{.+?)+(}])/i', "$1", $string);

Answer 1

$string = preg_replace('~\[\{(.+?)\}\]~', "\$$1", $string); 
# My String $Text_001 My String $Text_002 

Explanation example。

Answer 2

\[ and { have a special meaning in PCRE（加上你有畸形的正则表达式）。只是逃避他们：

$string = preg_replace('/(\\[\\{(.+?)\\}\\])/i', "$1", $string); 

Answer 3

用途：

<?php 
$string='My String [{Text_001}] My String [{Text_002}] '; 

$string = preg_replace("~".preg_quote('[{')."(.*?)".preg_quote('}]')."~","something", $string); 

echo $string; 
?> 

输出更换后[{something}]通过something：

My String something My String something