3v4l.org

run code in 300+ PHP versions simultaneously
<?php foreach( (function(){ yield [1, 2] => 3; })() as [$a, $b] => $c ){ var_dump($a, $b, $c); }
Output for 7.1.0 - 7.1.13, 7.2.0 - 7.2.1
Fatal error: Cannot use list as key element in /in/VMbJQ on line 4
Process exited with code 255.
preferences:
136.01 ms | 1150 KiB | 6 Q