php - How to check if a WooCommerce product is from a custom product type?

Solution:

You can try to check the product type with theWC_Productget_type() method.

Try to use (where "product_type" need to be replaced with your Gift card product type slug):

global $product; // If needed (optional)

if ( ! is_a( $product, 'WC_Product' ) ) {
    $product = wc_get_product( get_the_ID() );
}

if ( method_exist( $product, 'get_type' ) && $product_get_type() === 'product_type' ) {
    var_dump($product); // Gift card product
}
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It could work.

Now to get the product object from cart items you will use$cart_item['data'] , and on orders items you will use$item->get_product().

Solution:

I got the solution for my problem so I am posting it here, hope this will help others.

public static function is_gift_card( $product ) {

    if ( ! is_a( $product, 'WC_Product' ) ) {
            return false;
        }
    
        if ( $product->is_type( 'variation' ) ) {
            $product = wc_get_product( $product->get_parent_id() );
        }
    
        return $product->meta_exists( '_gift_card' ) && 'yes' === $product->get_meta( '_gift_card', true );

    }
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