Online PHP editor | output for 41ebV

<?php function incorrect(int $flags) { // Would work in C and other languages if ($flags & LOCK_SH) { echo "LOCK_SH\n"; } elseif($flags & LOCK_EX) { echo "LOCK_EX\n"; } elseif($flags & LOCK_UN) { echo "LOCK_UN\n"; } } function correct(int $flags) { $mode = $flags & ~LOCK_NB; if ($mode === LOCK_SH) { echo "LOCK_SH\n"; } elseif($mode === LOCK_EX) { echo "LOCK_EX\n"; } elseif($mode === LOCK_UN) { echo "LOCK_UN\n"; } } incorrect(LOCK_UN); correct(LOCK_UN);