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run code in 200+ php & hhvm versions
Bugs & Features
<?php function f($check, $interval=null) { if ($check == 'Recurring Alarm' && empty($interval)) return false; return true; } $result = f('Recurring Alarm'); var_dump($result);
based on Zln2U
Output for 4.3.0 - 7.2.0
bool(false)