Question

pa_我正试图哄骗产品＆＃39;属性数据，以便比较购物车中 items 之间的属性。但是，我无法访问数据。以下代码在 var_dump 命令中返回以下内容：

C：\ wamp \ www \ wizstaginglocal \ wp-content \ plugins \ code-snippets \ php \ snippet-ops.php（426）：eval（）＆＃39; d code：17：boolean false

换句话说没什么

代码：

add_action('woocommerce_before_cart', 'wiz_scale_woocommerce_before_cart');

function wiz_scale_woocommerce_before_cart() {
    foreach(WC() -> cart -> get_cart() as $cart_item_key => $cart_item) {
        // HERE the WC_Product object
        $product = $cart_item['data'];
        echo "My Product ID is {$cart_item['product_id']} \n";

        $attributes = $product -> get_attributes();
        foreach($attributes as $taxonomy => $value) {
            // The WP_Term object
            $term_obj = get_term_by('pa_1_scale', $value, $taxonomy);
            $term_name = $term_obj -> name;

        }
        echo '<pre>';
        var_dump($term_obj);
        echo '</pre>';
    }
}

对于$ attributes显示的var_dump，对于相关的slug：

数组（大小= 3）....＆＃39; pa_1_scale＆＃39; =＆GT; 对象（WC_Product_Attribute）[1383] 受保护的数据＆＃39; =＆GT; 数组（大小= 6）＆＃39; ID＆＃39; =＆GT; int 1 ＆＃39;名称＆＃39; =＆GT;字符串＆＃39; pa_1_scale＆＃39; （长度= 10）＆＃39;选项＆＃39; =＆GT; 数组（大小= 1） ... ＆＃39;位置＆＃39; =＆GT; int 2 ＆＃39;可见＆＃39; =＆GT;布尔值为true ＆＃39;变异＆＃39; =＆GT;布尔值假

我也意识到this post：这是什么原因？

Answer 1

属性数据是序列化的，我找不到提取它的方法。成功的工作是将一个SQL查询写入WP数据库。

function mycustomfunc_retrieve_attribute_for product() {
foreach(WC() -> cart -> get_cart() as $cart_item_key => $cart_item) {
    $product = $cart_item['product_id'];   
// perform wpdb search
global $wpdb;
$myatt = $wpdb->get_var(
    $wpdb->prepare(
    "SELECT DISTINCT
    t.name AS 'Term Name'
    FROM
    wiz_posts AS p
    INNER JOIN
    wiz_term_relationships AS tr ON p.id = tr.object_id
    INNER JOIN
    wiz_term_taxonomy AS tt ON tt.term_taxonomy_id = tr.term_taxonomy_id
    INNER JOIN
    wiz_terms AS t ON t.term_id = tt.term_id
    WHERE
    p.post_type = 'product'
    AND
    p.ID = %d
    AND
    tt.taxonomy = 'mySlugName'
    ",
    $product
    )
    );

 echo "My Product ID is {$product} and the attribute is {$myatt} \n";
 }

无法返回＆＃39;属性＆＃39; Woocomerce的数据

1 个答案: