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<?php $kw = " asdsdfsdf @ as "; $pattern = '/[' . preg_quote(',!@%^*()={};~`<>?\|', '/') . ']/u'; var_dump($pattern); var_dump(var_export($pattern, true)); var_dump(preg_match($pattern, $kw));
Output for git.master, git.master_jit, rfc.property-hooks
string(37) "/[,\!@%\^\*\(\)\=\{\};~`\<\>\?\\\|]/u" string(53) "'/[,\\!@%\\^\\*\\(\\)\\=\\{\\};~`\\<\\>\\?\\\\\\|]/u'" int(1)

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