Ability to enter a quantity

This post is a donation of code (or at least the start of code) to extend the “wp_paypal_payment_box” shortcode to support a “max_quantity” attribute that (if greater than one) will render a select box with the number of items that the user is intending to buy. The selected number is submitted to PayPal via the standard “quantity” variable.

Here is the patch I have made to v4.8 of this plugin:

diff -U 3 -r trunk/shortcode_view.php update/shortcode_view.php
--- trunk/shortcode_view.php	2016-01-21 22:35:46.000000000 -0600
+++ update/shortcode_view.php	2016-01-21 22:36:12.000000000 -0600
@@ -97,6 +97,7 @@
         'email' => '',
         'currency' => 'USD',
         'options' => 'Payment for Service 1:15.50|Payment for Service 2:30.00|Payment for Service 3:47.00',
+        'max_quantity' => '',
         'return' => site_url(),
         'cbt' => '',
         'reference' => 'Your Email Address',
@@ -144,6 +145,16 @@
                 <select class="wp_paypal_button_options">
     <?php echo $html_options; ?>
                 </select>
+              <?php if ($max_quantity > 1) { ?>
+                <label for="quantity">Quantity:</label>
+                <select name="quantity" style="width: 5em;">
+                <?php
+                  for ($i = 1; $i <= $max_quantity; $i++) {
+                ?>
+                  <option><?php echo $i; ?></option>
+                <?php } ?>
+                </select>
+              <?php } ?>
             </div>

                     <?php

https://ww.wp.xz.cn/plugins/wordpress-easy-paypal-payment-or-donation-accept-plugin/