Online PHP editor | refs for PIX3X

<?php function formatAds(array $ad): array { $ad['last_name'] = ucfirst($ad['last_name']); $ad['first_name'] = ucfirst($ad['first_name']); $phoneNumber = preg_replace(['/ /', '/^0?33/'], ['', '0'], $ad['phone_number']); $ad['phone_number'] = preg_match('/^0[1-9][\d]{8}$/', $phoneNumber, $matches) ? $matches[0] : null; return $ad; } $ad1 = [ "last_name" => "foo", "first_name" => "bar", "phone_number" => "04 55 66 77 11", ]; $ad2 = [ "last_name" => "flow", "first_name" => "blow", "phone_number" => "334 55 66 77 11", ]; $ad3 = [ "last_name" => "beez", "first_name" => "wiiz", "phone_number" => "0334 55 66 77 11", ]; print_r(formatAds($ad1)); print_r(formatAds($ad2)); print_r(formatAds($ad3));