Online PHP editor | refs for Hvn9S

<?php $array = [ "keyA" => 1, "keyB" => 2, "keyC" => 3 ]; echo "noMatch: " , (int)!!array_intersect_key($array, array_flip(['keyD', 'keyF'])) , "\n"; echo "oneMatch: " , !!array_intersect_key($array, array_flip( ['keyB', 'keyD'])) , "\n"; echo "twoMatches: " , !!array_intersect_key($array, array_flip(['keyA', 'keyC'])) , "\n";