Online PHP editor | refs for b9OoP

<?php // &$a,&$b,&$c,&$d function do_stuff(&$a,&$b,&$c,&$d) { $a += 1; $b += 1; $c += 1; $d += 1; $args = func_get_args(); foreach ($args as &$arg) { $arg += 1; } print_r(array($a, $b, $c, $d)); } $a = 1; $b = 2; $c = 3; $d = 4; print_r(array($a,$b,$c,$d)); do_stuff($a,$b,$c,$d); print_r(array($a,$b,$c,$d));