3v4l.org

run code in 300+ PHP versions simultaneously
<?php $source_arr = ["Car" => "Volvo", "City" => "Stockholm", "Country" => "Sweden"]; $new_arr = []; array_push( $new_arr, ...key_exists("Car", $source_arr) ? [$source_arr["Car"]] : [], ...key_exists("State", $source_arr) ? [$source_arr["State"]] : [] ); var_export($new_arr);

preferences:
32.75 ms | 406 KiB | 5 Q