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<?php $pattern="\(((?>[^()]+)|(?R))*\)"; //$str="(def a (x) (+ 1 x))(print (a 1))"; $str="(aaa) preg_match_all($pattern,$str,$out); var_dump($out);
Output for 5.4.0 - 5.4.26
Parse error: syntax error, unexpected end of file in /in/eubG2 on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected $end in /in/eubG2 on line 12
Process exited with code 255.

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