Empty Woocommerce Cart before adding new item Add

Author: lukecav

empty-woocommerce-cart-before-adding-new-item.code-snippets.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!-- This is a code snippets export file generated by the Code Snippets WordPress plugin. -->
+<!-- https://wordpress.org/plugins/code-snippets -->
+<!-- To import these snippets a WordPress site follow these steps: -->
+<!-- 1. Log in to that site as an administrator. -->
+<!-- 2. Install the Code Snippets plugin using the directions provided at the above link. -->
+<!-- 3. Go to 'Tools: Import' in the WordPress admin panel. -->
+<!-- 4. Click on the "Code Snippets" importer in the list -->
+<!-- 5. Upload this file using the form provided on that page. -->
+<!-- 6. Code Snippets will then import all of the snippets and associated information contained in this file into your site. -->
+<!-- 7. You will then have to visit the 'Snippets: All Snippets' admin menu and activate desired snippets. -->
+<!-- generator="Code Snippets/2.9.4" created="2017-11-17 17:05" -->
+<snippets>
+  <snippet scope="0">
+    <name>Empty Woocommerce Cart before adding new item</name>
+    <desc></desc>
+    <tags>empty, cart, single, product, woocommerce</tags>
+    <code>// before add to cart, only allow 1 item in a cart&#13;
+add_filter( 'woocommerce_add_to_cart_validation', 'woo_custom_add_to_cart_before' );&#13;
+&#13;
+function woo_custom_add_to_cart_before( $cart_item_data ) {&#13;
+&#13;
+    global $woocommerce;&#13;
+    $woocommerce-&gt;cart-&gt;empty_cart();&#13;
+&#13;
+    // Do nothing with the data and return&#13;
+    return true;&#13;
+}</code>
+  </snippet>
+</snippets>