PHP Zip Code Losing Leading Zero - php

Question

I am storing zip codes in a MySQL database as varchar(10). For some reason storing it in one table is not working like the other one. The only difference between the fields is that one is varchar(10) Nullable, and one is varchar(10). The Nullable column is saving the zip code without a leading zero so '05415' becomes 5415. This is working in the other table just fine. I think they are being stored on the same page, but I can't seem to find the problem. I'm not very good with PHP, so I would really appreciate some help here.
This is the function for registration on the site....the registration table in the db is saving the zip code with the leading 0, so I assume that this works.
$Zip = strip_tags(trim($_POST['MembersZip']));
if (strlen($Zip = trim($Zip)) == 0) {
$isError = true;
print "<script>$('#MembersZip').addClass('error');</script>";
print '<div class="errors">Please enter zip / postal code</div>';
}
if (strlen($Zip = trim($Zip)) < 5) {
$isError = true;
print "<script>$('#MembersZip').addClass('error');</script>";
print '<div class="errors">Zip code must be at least 5 digits</div>';
}
$sql = "INSERT INTO tbl_ecommerce_addresses (
ead_postal_code
) VALUES (
'" . addslashes($Zip) . "'
)";
This is what the process looks like for the orders. This is the table where the leading zero gets deleted before it gets inserted.
$fieldName = "BillingZip";
$fieldValue = strip_tags($_POST[$fieldName]);
if (!$fieldValue || strlen($fieldValue = trim($fieldValue)) == 0) {
$isError = true;
print "<script>$('#{$fieldName}').addClass('error');</script>";
print '<div class="errors">Please enter billing zip / postal code</div>';
} else {
$this->fields[$fieldName] = $fieldValue;
$this->record->eod_billing_postal_code = $fieldValue;
}
$Zip = $this->record->eod_billing_postal_code;
if (strlen($Zip = trim($Zip)) < 5) {
$isError = true;
print "<script>$('#BillingZip').addClass('error');</script>";
print '<div class="errors">Billing Zip Code must be at least 5 digits</div>';
}
It looks like this line
$newId = $this->record->insert();
is doing the insert, but when I do a var_dump of $this->record, the zip code still shows the leading 0. The only other thing I can think of is that the payment gateway is changing it somehow.
$paymentType = urlencode("Authorization"); // 'Sale' or 'Authorization'
$firstName = urlencode($this->fields["BillingFirst"]);
$lastName = urlencode($this->fields["BillingLast"]);
$creditCardType = urlencode($this->fields["CardType"]);
$creditCardNumber = urlencode($this->fields["CardNumber"]);
$padDateMonth = urlencode(str_pad($this->fields["CardMonth"], 2, '0', STR_PAD_LEFT));
$expDateYear = urlencode($this->fields["CardYear"]);
$cvv2Number = urlencode($this->fields["CardCode"]);
$address1 = trim(urlencode($this->fields["BillingAddress"]));
$address2 = urlencode($this->fields["BillingAddress2"]);
$city = urlencode($this->fields["BillingCity"]);
$state = urlencode($this->fields["BillingState"]);
$zip = urlencode($this->fields["BillingZip"]);
$country = urlencode($CountryCode); // US or other valid country code
$amount = urlencode($this->fields["PurchasedTotal"]);
$currencyID = urlencode($this->siteConfig->cy_code);
$ipAddress = $main->getIP();
$invoice = substr($this->fields["CardNumber"],-4,4) . substr($this->fields["BillingZip"],0,4) . substr($this->fields["PurchasedTotal"],0,2);
$nvpStr = "&PAYMENTACTION=$paymentType&IPADDRESS=$ipAddress&AMT=$amount&CREDITCARDTYPE=$creditCardType&ACCT=$creditCardNumber".
"&EXPDATE=$padDateMonth$expDateYear&CVV2=$cvv2Number&INVNUM=$invoice&FIRSTNAME=$firstName&LASTNAME=$lastName".
"&STREET=$address1&CITY=$city&STATE=$state&ZIP=$zip&COUNTRYCODE=$country&CURRENCYCODE=USD";
To get the zip code to display correctly, I updated the code with this, and the 0 showed up:
$zip = str_pad($order->eod_shipping_postal_code, 5, '0', STR_PAD_LEFT);

Answer 1

If I had a guess I would assume that somewhere along the way your variable is being stored as an integer, and if that happens then you would definitely lose that leading '0'. A few options to look at could be looking where the variable is stored and making sure it is stored as a string.
Alternatively, you can always make sure it has 5 numbers in php by using this:
str_pad($zip, 5, '0', STR_PAD_LEFT)
See this: http://www.php.net/str_pad
(Though I would advise that you find where it is being stored as a number over 'faking it' in php. but if you can't find it, this would work)

Answer 2

The data type in the database should be char(5) for the zip-code.