<?php

$numbers = [
	'84951234567',  '+74951234564', '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', '02', '84951234567 позвать люсю', 
  '849512345', '849512345678', '8 (409) 123-123-123', '7900123467', 
  '5005005001', '8888-8888-88', '84951a234567', '8495123456a', '+1 234 5678901', 
  '+8 234 5678901', '7 234 5678901',
];

$numbers = preg_replace("/^7/", '8', preg_replace("/\\W/", '', $numbers));

foreach($numbers as $number)
{
	echo (preg_match("/^8\\d{10}$/", $number, $match)) ? "[+] {$number}\n" : "[-] {$number}\n";
}