public function getRecords(int $id): array;
Hi, can someone tell me what colon is doing here, in this method declaration inside PHP interface? Is this PHP 7 syntax and what array is meaning here? Method must return array or something else?
Yes it's new syntax introduced in PHP 7 to declare the method returns an array.
http://php.net/manual/en/functions.returning-values.php#functions.returning-values.type-declaration