<?php
 
$correctNumbers = [ 
  '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 = [
  '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 + */
];
 
$regex = '/^ *(\\+ *7|8)([-() ]*[0-9]){10}$/';	//написанная регулярка
 
function checkNumbers($numbers, $regex)
{
	foreach ($numbers as $number)
	{
		echo "$number - ";
		echo (preg_match($regex, $number) ? "ok" : "failed");
		echo "\n";
	}
}
 
echo "These should be ok:\n";
 
checkNumbers($correctNumbers, $regex);
 
echo "\nThese should be failed:\n";
 
checkNumbers($incorrectNumbers, $regex);
 
 

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