Online PHP editor | refs for TBLt5

@ 2021-08-18T07:52:30Z

<?php

$a = [1,2,3,4];
$b = [
	1=>[
    	2=>[
        	3=>[
        		4=>[]
            ]
        ]
    ]
];
$tmp = [];
foreach ($a as $val) {
    if ($tmp) {
        if (isset($tmp[$val])) {
            $tmp = &$tmp[$val];
        } else {
            break;
        }
    } else {
        $tmp = &$b[$val];
    }
    
}
$tmp = ['aaaa'];

var_dump($tmp);
var_dump($b);