Format Telephone Number with PHP

formatTelephoneNumber.php

<?php

function formatTelephoneNo($phone_number, $country_code = false)
{
    $cleaned = preg_replace('/[^[:digit:]]/', '', $phone_number);

    if ($country_code) {
    	preg_match('/(\d{3})(\d{3})(\d{4})/', $cleaned, $matches);
    	return "({$matches[1]}) {$matches[2]} {$matches[3]}";
    }

    preg_match('/(\d{3})(\d{4})/', $cleaned, $matches);
    return "{$matches[1]} {$matches[2]}";
}

Usage: With country code

echo formatTelephoneNo("+9603303033", true);
Result: (960) 330 3033

Usage: Without country code

echo formatTelephoneNo("3303033");
Result: 330 3033