如果用户已经在Woocommerce中购买了当前产品，则显示自定义文本

如果您 只 希望定位 具有完整状态的订单
，则可以基于

wc_customer_bought_product()

// Utility function to check if a customer has bought a product (Order with "completed" status only)function customer_has_bought_product( $product_id, $user_id = 0 ) {    global $wpdb;    $customer_id = $user_id == 0 || $user_id == '' ? get_current_user_id() : $user_id;    $status      = 'wc-completed';    if( ! $customer_id )        return false;    // Count the number of products    $count = $wpdb->get_var( "        SELECt COUNT(woim.meta_value) FROM {$wpdb->prefix}posts AS p        INNER JOIN {$wpdb->prefix}postmeta AS pm ON p.ID = pm.post_id        INNER JOIN {$wpdb->prefix}woocommerce_order_items AS woi ON p.ID = woi.order_id        INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS woim ON woi.order_item_id = woim.order_item_id        WHERe p.post_status = '$status'        AND pm.meta_key = '_customer_user'        AND pm.meta_value = $customer_id        AND woim.meta_key IN ('_product_id','_variation_id')        AND woim.meta_value = $product_id    " );    // Return a boolean value if count is higher than 0    return $count > 0 ? true : false;}add_action( 'woocommerce_before_single_product_summary', 'woo_review_discount_message');function woo_review_discount_message() {    global $product;    if ( customer_has_bought_product( $product->get_id() ) && ! $product->is_type('variable') ) {        $user = wp_get_current_user();        echo '<div ><span ><i ></i></span> Hi ' . $user->first_name . '! Please write a review below.</a></div>';    }}

代码进入活动子主题（或活动主题）的function.php文件中。经过测试和工作。

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像Woocommerce功能一样

wc_customer_bought_product()

，这不适用于可变产品的单个页面。