php - How to remove all simple product in the cart Woocommerce -

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how remove simple product in cart when click on button:

// add item cart on visit depending on cart total value add_action( 'init', 'add_product_to_cart' );  function add_product_to_cart() {   if ( isset($_post['mix']) && !empty($_post['mix']) && isset($_post['mix_name']) && !empty($_post['mix_name']) ) {     global $woocommerce;            $addcart = $woocommerce->cart->add_to_cart( $product_id = 700,  $quantity=1, $variation_id= '', array('attribute_strain' => 'sativa', 'attribute_level' => 'cbd', 'attribute_flavor' => 'flower shop') );           foreach ($woocommerce->cart->cart_contents $cart_item_key => $values) {             $_product = $values['data'];           //find simple product type remove           if($_product->product_type == 'simple') {              unset($woocommerce->cart->cart_contents[$cart_item_key]);           }       }      if($addcart) {             wp_safe_redirect( wc()->cart->get_checkout_url() );             exit;         } else {             wc_print_notices();             _e('can\'t add');         }     } }

when hit mix button, want add product id = 700 (variation product) cart, , remove other simple products. part adding product ok not remove other simple products. how remove other 'simple' product_type


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