<?php

error_reporting(-1);

function numCheck($numArray) {
	foreach ($numArray as $id => $number) {
		$regexp = "/^\ ?((\+\ ?7)|8)\ ?(\(?\ ?\-?\d\ ?\)?){3,4}(\ ?\-?\ ?\d){6,7}$/";
		if (preg_match($regexp, $number)) {
			echo "+ {$number} \n";
		} else {
			echo "- {$number} \n";
		}
	}
}
$correctNumbers = [ 
  '8 ( 495 ) 1 - 2 - 3 - 4 - 5 - 6 - 7', '84951234567',  '+74951234567', '8-495-1-234-567', 
  ' 8 (8122) 56-56-56', '8-911-1234567', '8 (911) 12 345 67', 
  '8-911 12 345 67', '8 (911) - 123 - 45 - 67', '+ 7 999 123 4567', 
  '8 ( 999 ) 1234567', '8 999 123 4567'
];
$incorrectNumbers = [
  '8 911 415 (16) (13)', '8 (((((((((((((((1938(((((2)((((21(((((21(((2', '8(((((((-------((((( ( --- ((((9(((1(((1)3------4----------5-----------6-----------7----((((8--------9)','02', '84951234567 позвать люсю', '849512345', '849512345678', 
  '8 (409) 123-123-123', '7900123467', '5005005001', '8888-8888-88',
  '84951a234567', '8495123456a', 
  '+1 234 5678901', /* неверный код страны */
  '+8 234 5678901', /* либо 8 либо +7 */
  '7 234 5678901' /* нет + */
];
numCheck($correctNumbers);
numCheck($incorrectNumbers);