Online PHP editor | output for vMcnB

<?php $injectionSequenceName='Affaires_THC_260331_INJE_I'; $injectionSequenceName2='THC_INJE_S'; $rawIdentifier = \explode('_', $injectionSequenceName, 4)[3] ?? ''; $rawIdentifier = \str_replace('_', '', $rawIdentifier); $rawIdentifier2 = \explode('_', $injectionSequenceName2, 4)[3] ?? ''; $rawIdentifier2 = \str_replace('_', '', $rawIdentifier2); echo($rawIdentifier); echo($rawIdentifier2);