Online PHP editor | output for 40HHi

@ 2014-06-22T03:47:14Z

<?php
		$string = 'a{ra:calc(*(la)100%);font-s';
		$string_regex = '((?<!\\\\)(?:\\\\\\\\)*(\'|")(?:.*?[^\\\\])??(?:\\\\\\\\)*\\2)';
		$comment_regex = '(\\/\\*(?:(?!\\*\\/).)*\\*\\/)';
		$url_regex = '(?<=:| |,|\\(|\\))(url|calc)\\s*(\\()\\s*((?:[^()]+|(?2))*?)\\s*(\\))';
		$string = preg_match('/'.$string_regex.'|'.$comment_regex.'|'.$url_regex.'|'.$calc_regex.'/si', $string, $matches);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: Undefined variable $calc_regex in /in/40HHi on line 6
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Notice: Undefined variable: calc_regex in /in/40HHi on line 6
Output for 7.3.32 - 7.3.33
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3: Notice: Undefined variable: calc_regex in /in/40HHi on line 6

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