How to edge phones through preg_match_all tags?

Question

Mobile devices

I can’t understand what’s wrong, I’m trying to parse the phones line by line:

preg_match_all("/^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$/", "[phone] [phone]", $phones, PREG_SET_ORDER);
foreach ($phones as $val) {
        echo "телефон: " . $val[0] . "\n";
    }