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@ 2025-09-22T01:50:34Z

<?php

declare(strict_types=1);

function foo(int $x, int $y = 2, ?int &$z = null) {
    var_dump(func_num_args());
    $z = $x ** 2;
    return $x * $y;
}

$a = 'a';
var_dump([foo(5, z: $a), $a]);
var_dump([foo(3, -1)]);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

24.99 ms | 404 KiB | 5 Q