[{和}]之间的preg_replace

Question

我有这个字符串：
    

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

我想用$ something替换preg_replace [{something}]（例如：[{Text_001}] - ＆gt; $ Text_001）。

我的preg_replace中有错误：

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

Answer 1

\[ and { have a special meaning in PCRE（加上你的regexp格式不正确）。逃避他们：

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

Answer 2

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

Explanation example

Answer 3

使用：

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

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

echo $string;
?>

将[{something}]替换为something之后的输出：

My String something My String something