PHP正则表达式来替换{

Question

之间的内容我有以下正则表达式来替换[[和]]之间的所有内容和回调函数。不知怎的，我不知道如何去改变它来代替{ }单花括号之间的文字：

preg_replace_callback('~\[\[((?>[^]]++|](?!]))*)]]~', function ($m) use ($that) { 
    return "REPLACE TEXT"; }, $layout); 

Answer 1

preg_replace_callback('~\{((?>[^}]++)*)\}~', function ($m) use ($that) { 
return "REPLACE TEXT"; }, $layout); 

Answer 2

发布的答案应该与嵌套的括号也行：

$str = 'this is the text that {i want{to} replace this text} from it'; 
echo preg_replace('/ \{ ((?: [^{}]* | (?0))+) \} /x', 'REPLACE TEXT', $str); 
//=> this is the text that REPLACE TEXT from it 

此正则表达式正在使用conditional subpattern regex。