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run code in 150+ php & hhvm versions
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<?php $subject = "industry"; $pattern = '/industr(?:y|ies)/'; preg_match($pattern, $subject, $matches, PREG_OFFSET_CAPTURE, 3); print_r($matches);
Output for 4.3.3 - 7.1.0
Array ( )
Output for 4.3.0 - 4.3.2
Warning: Wrong parameter count for preg_match() in /in/PULu5 on line 4