$cart_item = $woocommerce->cart->get_cart(); 

我有上面的代码.

如果我在cart_item上运行print_r,我会得到一个多维数组：

Array(    [a6292668b36ef412fa3c4102d1311a62] => Array        (            [product_id] => 6803

我如何才获得product_id？

我试过$test = $cart_item [‘data’];

print_r($test);

没工作.

解决方法:

要获取foreach循环中每个购物车项目的产品ID(对于简单产品)：

foreach( WC()->cart->get_cart() as $cart_item ){
    $product_id = $cart_item['product_id'];
}

如果它是变量产品,要获取变体ID：

foreach( WC()->cart->get_cart() as $cart_item ){
    $variation_id = $cart_item['variation_id'];
}

或者对于这两种情况(其中$cart_item [‘data’]是Woocommerce 3中的WC_Product对象)：

foreach( WC()->cart->get_cart() as $cart_item ){
    // compatibility with WC +3
    if( version_compare( WC_VERSION, '3.0', '<' ) ){
        $product_id = $cart_item['data']->id; // Before version 3.0
    } else {
        $product_id = $cart_item['data']->get_id(); // For version 3 or more
    }
}

Update: Using Product ID outside the loop

1)打破循环(只是为了得到购物车的第一个商品ID(产品ID))：

foreach( WC()->cart->get_cart() as $cart_item ){
    $product_id = $cart_item['product_id'];
    break;
}

您可以直接使用购物车中第一项的$product_id变量.

2)使用产品ID数组(购物车中的每个项目一个).

$products_ids_array = array();

foreach( WC()->cart->get_cart() as $cart_item ){
    $products_ids_array[] = $cart_item['product_id'];
}

>获取第一项产品ID：$products_ids_array [0];
>获取第2项产品ID：$products_ids_array [1];等等…

要检查购物车项目中的产品类别或产品标签,请使用WordPress has_term(),如：

foreach( WC()->cart->get_cart() as $cart_item ){
    // For product categories (term IDs, term slugs or term names)
    if( has_term( array('clothing','music'), 'product_cat', $cart_item['product_id'] ) ) {
        // DO SOMETHING
    }

    // For product Tags (term IDs, term slugs or term names)
    if( has_term( array('clothing','music'), 'product_tag', $cart_item['product_id'] ) ) {
        // DO SOMETHING ELSE
    }
}

We always use $cart_item['product_id'] as we get the parent variable product when a cart item is a product variation.

Product variations don’t handle any custom taxonomy as product categories and product tags