<?php
$wrightNumbers = array(
    '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'
    );
$wrongNumbers = array(
    '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 +
    );
 
function validatePhones(array $numbers)
{
    $regExp = '/^\s?(8|\+\s?7)\s?-?\s?\(?(\s?-?\s?\d\s?\)?\s?-?\s?){10}$/';
    foreach ($numbers as $number) {
        if (preg_match($regExp, $number)) {
            echo "+ Номер \"$number\" прошел проверку. +\n";
        } else {
            echo "- Номер \"$number\" НЕ прошел проверку. -\n";
        }
    }
    echo "==================================================\n";
}
 
validatePhones($wrightNumbers);
validatePhones($wrongNumbers);

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