Online PHP editor | refs for Nh4uG

<?php $unresponsives = [ [ "Customer", "172.52.46.75", "2022-04-01 16:20:45", "1817", "nxlog", "2328.02 Hours" ], [ "Customer", "172.25.89.45", "2022-04-01 16:20:45", "1817", "nxlog", "Undefined" ], [ "Customer", "172.19.10.94", "2022-04-01 16:20:45", "1817", "nxlog", "324.02 Hours" ], [ "Customer", "172.19.10.94", "2022-04-01 16:20:45", "1817", "nxlog", "2322.02 Hours" ], [ "Customer", "172.19.10.94", "2022-04-01 16:20:45", "1817", "nxlog", "Undefined" ], ]; usort( $unresponsives, fn($a, $b) => [$b[5] === 'Undefined', (float) $b[5]] <=> [$a[5] === 'Undefined', (float) $a[5]] ); var_export($unresponsives);