Echo specific Product Attributes and Meta Data in WooCommerce Cart

Update (compatibility with WC 3+)

After your explanations in your comment below, I just discover that you are using Essential Grid premium plugin (a commercial plugin) to create some custom fields and attributes related to your wooCommerce products.

At this point, I can't help, because I have never used this plugin before, and I don't know where data is stored within this plugin, in the database.

I think that you can't use usuals WordPress/WooCommerce functions to get this data, and that is the reason that you will not get any data using get_post_meta() as usual…

The best way to get helped is:
- to search/explore your database for that custom fields data.
- to search/ask in Essential Grid plugin authors support threads.

My original answer:

For attributes defined in your products, using get_post_meta() function with the $product_id variable, you need to use it this way to get the data you want (this is an array of values):

// getting the defined product attributes$product_attr = get_post_meta( $product_id, '_product_attributes' );// displaying the array of values (just to test and to see output)echo var_dump( $product_attr );

You can also use the function get_attributes() (more recommended), this way:

// Creating an object instance of the product$_product = new WC_Product( $product_id );// getting the defined product attributes$product_attr = $_product->get_attributes();// displaying the array of values (just to test and to see output)echo var_dump( $product_attr );

All code is tested and working.

NOW CART DATA IS SET IN COOKIES AND SESSIONS and you will need to use WC()->cart syntax to get cart data and items

So you can use this kind of code to get the items (products) in cart:

foreach ( WC()->cart->get_cart() as $cart_item ) {    $product = $cart_item['data'];    if(!empty($product)){        // getting the defined product attributes        $product_attr = $_product->get_attributes();        // displaying the attributes array of values (just to test and to see output)        echo var_dump( $product_attr ) . '<br>';    }}

This will display the attributes array of values for each product in CART.

A solution based on this thread, using wc_get_product_terms() inside the same code snippet to get your attribute:

foreach ( WC()->cart->get_cart() as $cart_item ) {    $product = $cart_item['data'];    if(!empty($product)){        // compatibility with WC +3        $product_id = method_exists( $product, 'get_id' ) ? $product->get_id() : $product->id;        // Getting "height" product attribute        $myAttribute = array_shift( wc_get_product_terms( $product_id, 'pa_height', array( 'fields' => 'names' ) ) );        echo $myAttribute . '<br>';    }}

References:

• WC_Product Class - get_attributes()
• WooCommerce - Get custom product attribute
• Get Cart products id on checkout WooCommerce page, to display product images
• WordPress Code Reference - get_post_meta()