<?php function f(int $flags){ if($flags & LOCK_SH){ echo "im handling a LOCK_SH request!"; }elseif($flags & LOCK_EX){ echo "im handling a LOCK_EX request!"; }elseif($flags & LOCK_UN){ echo "im handling a LOCK_UN request!"; }else{ echo "didn't understand those flags..."; } } f(LOCK_UN);
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