3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = (object)[1 => 1]; $a->{1} = 2; $a = (array)$a; //$a = []; //$a[] = 0; //$a[] = 1; $a[1] = 7; var_dump($a); //var_dump(array(1 => 2, "1" => 3));

preferences:
36.49 ms | 402 KiB | 5 Q