WP Update – Form Post Fix – Help

So WordPress as we all know, updates quite a bit. One of the updates seemed to have broken some of my custom code. Really simple stuff, but something no longer works. I am not a coder and not quite sure what is wrong. Anyone care to tell me what has changed so I can fix this no longer working code? Thanks!

My page code for the form is this…

<form action="https://www.websitehere.com/forwarder.php" method="post"><p>
<input name="lname" type="text" pattern="[a-zA-Z]{2,25}" placeholder="Input Last Name" title="Please Enter Last Name" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Last Name</b><br>
<input name="snumber" type="text" pattern="[0-9]{1,7}" placeholder="Input Street Number" title="Please Enter Numeric Street Number" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Street Number</b><br>
<input name="sname" type="text" pattern="[a-zA-Z]{2,25}" placeholder="Input Street Name" title="Please Enter Alphabetical Street Name" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Street Name</b><br>
<input name="zcode" type="text" pattern="[0-9]{5}" title="Please Enter Zip-code" placeholder="Input Five Digit Zip-code" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Zipcode</b><br>
<input name="month" type="text" pattern="[0-1]{1}[0-9]{1}" min="01" max="12" title="Please Enter Two Digit Month" placeholder="Input Two Digit Month" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Month Of Session</b><br>
<input name="year" type="text" pattern="[0-9]{2}" min="00" max="99" title="Please Enter Two Digit Year" placeholder="Input Two Digit Year" required style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Year Of Session</b><br>
<input name="session" type="text" pattern="[0-9]{1,2}" title="Leave blank unless you have had multiple sessions during the same month." placeholder="(Leave blank unless needed.)" style="background-color: white; border: 1px solid orange; width:222px;"> : <b>Session Number</b><br>
<input type="submit" style="font-size:10pt;color:black;background-color:orange;border:2px solid #000000;padding:3px"> - <button type="reset" value="Reset" style="font-size:10pt;color:black;background-color:orange;border:2px solid #000000;padding:3px">Clear</button>
</form>

and my php file has this lil’ bit of code…

<?php 
$lname = $_POST['lname'];
$snumber = $_POST['snumber'];
$sname = $_POST['sname'];
$zcode = $_POST['zcode'];
$month = $_POST['month'];
$year = $_POST['year'];
$session = $_POST['session'];
header("Location:https://www.websitehere.com/dir/$lname$snumber$sname$zcode$month$year$session");
?>

It use to work, and directed people to custom urls dependent on the information they entered into the form. However, it now neglects all the variables and only forwards to the domain of https://www.websitehere.com/dir/.

Since this use to work splendidly, my only guess is that one of the wordpress updates has changed something… I just don’t know what. Any help would be great!