regex phone number validation with PHP

Question

This is another question about a previous question I had asked yesterday. I want user to be allowed to type US phone numbers in the following formats.

(800)-555-121

Answer 1

This function validate a phone number, return true if it validate and false if invalid. This function very simple i was wrote to.

    /**
     * @param $number
     *
     * @return bool
     */
    function validatePhoneNumber($number) {
        $formats = [
            '###-###-####', '####-###-###',
            '(###) ###-###', '####-####-####',
            '##-###-####-####', '####-####', '###-###-###',
            '#####-###-###', '##########', '#########',
            '# ### #####', '#-### #####'
        ];

        return in_array(
            trim(preg_replace('/[0-9]/', '#', $number)),
            $formats
        );
    }