3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('0' => '0A', '1' => '1A'); $b = array('0' => '0B', '4' => '4B', '2' => '2B'); $c = array('0' => '0C', '3' => '3C', '2' => '2C'); $options = $a + $c + $b; print_r($options);

preferences:
38.35 ms | 402 KiB | 5 Q