<?php $x = '[^A-Za-z0-9 \r\n@£$¥èéùìòÇØøÅå\u0394_\u03A6\u0393\u039B\u03A9\u03A0\u03A8\u03A3\u0398\u039EÆæßÉ!"$%&\'()*+,\-./:;<><=>?¡ÄÖÑܧ¿äöñüà^{}\\\[~\]|\u20AC]+'; $x = preg_quote($x,'#'); var_dump($x) $data = 'asdf‘‼'; $tmp = []; $result = preg_match($x,$data,$tmp); var_dump($result); var_dump($tmp);
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Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).