3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'foo' => 'bar', 'num' => 5, 'arr' => array( 'bar' => 'baz' ) ); foreach ($arr as $k => $v) { echo "Key: $k"; var_dump($v); }

preferences:
49.33 ms | 402 KiB | 5 Q