I want to replace content from a string which is contained within {content}. It an be multilines etc. The preg_replace function should remove the whole { com no mat ment }
preg_match_all（/｛*（[^｝]+*）｝/s），$content，$matches）
试试这个：
$result = preg_replace( /{[^}]*}/s , replacement content , $subject);
这是怎么回事？
preg_match_all( /{([^}]+)}/s ), $content, $matches)
您需要s修饰符使表达式能够使用换行符。$matches数组将包含所有可以替换的匹配段。
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