Phone.php

<?php
class RM_Phone {

    public static $validationRegex = '/^\+?[0-9]{8,14}$/';

    private $_phone;
    
    public static function clearPhoneNumber($phone) {
        return preg_replace('/\D/', '', $phone);
    }
    
    public function __construct($phone) {
        $this->setPhoneNumber($phone, false);
    }
    
    public function setPhoneNumber($phoneNumber, $validate = true) {
        $this->_phone = self::clearPhoneNumber($phoneNumber);
        if ($validate) $this->validate();
    }
    
    public function clear() {
        $this->_phone = '';
    }
    
    public function getPhoneNumber() {
        return $this->_phone;
    }
    
    public function getNumberWithCode($code) {
        return preg_replace('/.*(\d{10})/', '+' . $code . '${1}', $this->getPhoneNumber());
    }
    
    public function validate() {
        if (!preg_match(static::$validationRegex, $this->getPhoneNumber()))
            throw new Exception('Wrong phone format');
        return true;
    }
    
    public function isEmpty() {
        return $this->getPhoneNumber() == '';
    }
    
    public function getFormatedPhoneNumber() {
        return str_replace(array(
            '+'
        ), array(
            ''
        ), $this->getPhoneNumber());
    }
    
    public function getPrettyPhoneFormat() {
        return preg_replace(
            '/^(\+[0-9]{2})?([0-9]{3})([0-9]*)([0-9]{2})([0-9]{2})$/',
            '${1} (${2}) ${3} ${4} ${5}',
            $this->getPhoneNumber()
        );
    }

}