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run code in 200+ php & hhvm versions
Bugs & Features
<?php if(preg_match('@/about/social/([0-9a-zA-Z\-]+)/@','about/social/allOk/',$pM))$newsSectionName = $pM[1]; echo $newsSectionName;
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: newsSectionName in /in/1nf1I on line 3
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: newsSectionName in /in/1nf1I on line 3