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<?php $m = []; preg_match(/feed_id=(\d+)/, 'https://www.only4kids.dk/index.php/gomage_feed/index/generate/?isAjax=true&feed_id=15&form_key=mPMJZ2mErWGfIvWP', $m);
Output for 5.6.38, 7.1.0 - 7.1.23, 7.2.0 - 7.2.11
Parse error: syntax error, unexpected '/' in /in/pDRWB on line 3
Process exited with code 255.

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