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run code in 150+ php & hhvm versions
Bugs & Features
<?php $subject = '{"_id":"scheme_version","_rev":"4-cad1842a7646b4497066e09c3788e724","scheme_version":1234}'; $pattern = '/^(?<=scheme_version":)[0-9]+$/'; echo preg_grep($pattern, array($subject));
Output for 5.4.0 - 7.1.0
Notice: Array to string conversion in /in/Gt1tH on line 4 Array
Output for 4.3.0 - 5.3.29
Array