<?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', '+8 234 5678901', '7 234 5678901'];
$regexp = "/^([\s\+]+[7]|[\s]*[8])([\s\-\(\)]*[\d]){10}$/";
foreach ($correctNumbers as $numbers) {
    if (preg_match($regexp, $numbers, $match)) {
        echo "\n$match[0]";
    } else
        echo "\nСовпадений не найдено!!!";
}
echo "\n";
foreach ($incorrectNumbers as $numbers) {
    if (preg_match($regexp, $numbers, $match)) {
        echo "\n$match[0]";
    } else
        echo "\nСовпадений не найдено!";
}

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