rs in string are equal to or greater than a valid phone number length.
        
        @param phone: String to verify the containing numbers are equal or above 10 numbers in length.
        @return Returns &lt;code>true&lt;/code> if phone number; otherwise &lt;code>false&lt;/code>.
    */
    public static function isPhone(phone:String):Boolean {
        return StringUtil.getNumbersFromString(phone).length >= 10;
    }
    
    /**
        Determines if numbers in string are a valid US zip code length.
   