if(!(preg_match("/^13[0-9]{1}[0-9]{8}$|15[0189]{1}[0-9]{8}$|189[0-9]{8}$/",$mobile))){
Redirect("passenger.php?car_id=".$_SESSION['cart']['car_id'],"手机号码格式不正确");
}
if(!(preg_match("/^13[0-9]{1}[0-9]{8}$|15[0189]{1}[0-9]{8}$|189[0-9]{8}$/",$mobile))){
Redirect("passenger.php?car_id=".$_SESSION['cart']['car_id'],"手机号码格式不正确");
}