Hi,

I have this as part of a php script:

PHP Code:
function make_reservation_validation() // the function makes validation for the reservation.php file
{
    global $name_title, $name, $address, $city, $country, $zip, $home_phone, $work_phone, $email, $contact_method, $contact_method2, $contact_method3, $movies, $number_of_tickets, $seating_type, $main_message, $tickets, $credit_card_payment;
    global $name_problem, $address_problem, $city_problem, $country_problem, $home_phone_problem, $work_phone_problem, $email_problem, $tickets_problem;
    
    $error=0; //init
    if (input_verification($name_title,"^[[:alpha:][:punct:]]+$")) {$error=1;}
    if (input_verification($name,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1; $name_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($address,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1; $address_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($city,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1; $city_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($country,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1; $country_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($zip,"^[[:digit:][:alnum:][:space:][:punct:]]+$")) {$error=1; $zip_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($home_phone,"^[[:digit:][:space:][:punct:]]+$")) {$error=1; $home_phone_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($work_phone,"^[[:digit:][:space:][:punct:]]+$")) {$error=1; $work_phone_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($email,"^.+@.+\\..+$")) {$error=1; $email_problem="<font color=\"red\"><B> * </B></font>";}
    if (isset($contact_method)==1 and $contact_method<>"") {if ($contact_method<>"Home") {$error=1; }}
    if (isset($contact_method2)==1 and $contact_method2<>"") {if ($contact_method2<>"Work") {$error=1;}}
    if (isset($contact_method3)==1 and $contact_method3<>"") {if ($contact_method3<>"Email") {$error=1;}}
    if (input_verification($movies,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1;}
    if (input_verification($number_of_tickets,"^[[:digit:]]+$")) {$error=1;  $tickets_problem="<font color=\"red\"><B> * </B></font>";}
    if (input_verification($seating_type,"^[[:alnum:][:space:][:punct:]]+$")) {$error=1;  $tickets_problem="<font color=\"red\"><B> * </B></font>";}
    if (isset($tickets)==1 and $tickets<>"") {if ($tickets<>"Yes") {$error=1;}}
    if (isset($credit_card_payment)==1 and $credit_card_payment<>"") {if ($credit_card_payment<>"Yes") {$error=1;}}

return $error;
} 
At the moment the postcode $zip is a required field, but I don't want it as required anymore. Can I just remove the whole line or will that mess things up?