Online PHP editor | refs for uWJAf

<?php $a=array('title'=>'a','arr'=>[]); $b=array('title'=>'b','arr'=>[]); $b=array('title'=>'c','arr'=>[]); $arr=Array(); $map=Array(); $arr[1]=&$a; $map[0]=&$a; $map[1]=&$b; $map[2]=&$c; $map[0]['arr'][22]=$b; //$map[1]['arr'][33]=$c; ?><h2>MAP</h2><? var_dump($map); ?><h2>ARR</h2><? var_dump($arr);