Tying form in with PHP

src/.env.example

@@ -0,0 +1,6 @@
+EVENT_TICKET_PRICE="55"
+ENHANCER_TICKET_PRICE="20"
+DB_HOST="localhost"
+DB_USER="root"
+DB_PASS="root"
+POSTMARK_API_KEY="special"

src/functions.php

@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * Returns integer and santitizes bad user data
+ *
+ * @param $variable
+ * @param bool $postiveOnly
+ * @return int
+ */
+function getInteger($variable, $postiveOnly = true)
+{
+    // Change to integer if not one
+    if (!is_int($variable)) {
+        $variable = (int)$variable;
+    }
+
+    if ($postiveOnly && $variable < 0) {
+        $variable = 0;
+    }
+
+    return $variable;
+}
+
+/**
+ * Converts possible float or string to cents
+ *
+ * @param $variable
+ * @return int
+ */
+function convertPossibleFloatToCents($variable)
+{
+    $variable = intval(strval(floatval(preg_replace("/[^0-9.]/", "", str_replace(',', '.', $variable))) * 100));
+
+    return $variable;
+}
+
+
+/**
+ * Show shopping cart line item on form
+ *
+ * @param $name
+ * @param $price
+ */
+function shoppingCartLineItem($name, $price, $description = '')
+{
+    if ($price > 0) {
+        echo '<li class="list-group-item d-flex justify-content-between lh-condensed">
+                <div>
+                    <h6 class="my-0">' . $name . '</h6>
+                    <small class="text-muted">' . $description . '</small>
+                </div>
+                <span class="text-muted">' . '$' . number_format(($price/100), 2) . '</span>
+            </li>';
+    }
+
+}
+
+function shoppingCartTotal($price)
+{
+    echo '<li class="list-group-item d-flex justify-content-between">
+                <span>Total</span>
+                <strong>' . '$' . number_format(($price/100), 2) . '</strong>
+            </li>';
+}

views/step1.php

@@ -77,7 +77,7 @@
     </div>
     <div class="col-md-8 order-md-1">
         <h4 class="mb-3">Your Order</h4>
-        <form class="needs-validation" novalidate>
+        <form class="needs-validation" novalidate method="POST">
 
             <div class="mb-3">
                 <label for="eventTickets">How many tickets would you like to purchase?</label>

views/step2.php

@@ -5,23 +5,23 @@
             <span class="text-muted">Your cart</span>
         </h4>
         <ul class="list-group mb-3">
-            <li class="list-group-item d-flex justify-content-between lh-condensed">
+            <?=shoppingCartLineItem('Dinner', $eventTicketPrice, $eventTicketQty . ' x tickets');?>
-                <div>
+            <?=shoppingCartLineItem('Ticket Enhancers', $ticketEnhancerPrice, $ticketEnhancerQty . ' x enhancers');?>
-                    <h6 class="my-0">Product name</h6>
+            <?=shoppingCartLineItem('Additional Contribution', $additionalContribution);?>
-                    <small class="text-muted">Brief description</small>
+            <?=shoppingCartTotal($cartTotal);?>
-                </div>
+
-                <span class="text-muted">$12</span>
-            </li>
-            <li class="list-group-item d-flex justify-content-between">
-                <span>Total</span>
-                <strong>$20</strong>
-            </li>
         </ul>
 
     </div>
     <div class="col-md-8 order-md-1">
         <h4 class="mb-3">Billing address</h4>
         <form class="needs-validation" novalidate>
+            <?php
+            $eventTicketQty = getInteger($_POST['eventTicketQty']);
+            $ticketEnhancerQty = getInteger($_POST['ticketEnhancerQty']);
+            $additionalContribution = getInteger($_POST['additionalContribution']);
+            ?>
+            <input type="hidden" name="eventTicketQty" value="<?=$eventTicketQty?>" />
             <div class="row">
                 <div class="col-md-6 mb-3">
                     <label for="firstName">First name</label>