Online PHP editor | refs for l49oT

<?php $obj1 = [['main' => 10, 'fallback' => 5]]; $obj2 = [['main' => null, 'fallback' => 5]]; $obj3 = [['main' => null, 'fallback' => null]]; $obj4 = [[]]; $obj5 = [['fallback' => 5]]; $obj6 = [['main' => 10]]; function doStuff($obj) { return $obj[0]['main'] ?? $obj[0]['fallback'] ?? 0; } var_dump(doStuff($obj1)); var_dump(doStuff($obj2)); var_dump(doStuff($obj3)); var_dump(doStuff($obj4)); var_dump(doStuff($obj5)); var_dump(doStuff($obj6));