Online PHP editor | refs for IoOuH

@ 2020-10-08T12:50:22Z

<?php

define('VOID', INF);

function ifsetter(&$mElement, $mDefault = '') {
    if (!isset($mElement) OR $mElement === VOID){
        $mElement = $mDefault;
    }
    return $mElement;
}

$t = [];
echo ifsetter($t['aaa'], 'hello'); // return 'hello' and set $t['aaa'] = 'hello';