Php函数返回时没有值
我有这张表(wp\U商业\U订单\U项目元): 和此表(wp\U商业\U订单\U项目): 我正在使用一个函数(functions.php),它返回数组中的以下项目id:Php函数返回时没有值,php,arrays,wordpress,Php,Arrays,Wordpress,我有这张表(wp\U商业\U订单\U项目元): 和此表(wp\U商业\U订单\U项目): 我正在使用一个函数(functions.php),它返回数组中的以下项目id: function retrieve_orders_ids_from_a_product_id( $product_id, $order_date ) { global $wpdb; $table_posts = $wpdb->prefix . "posts"; $table_items = $wpdb->pre
function retrieve_orders_ids_from_a_product_id( $product_id, $order_date ) {
global $wpdb;
$table_posts = $wpdb->prefix . "posts";
$table_items = $wpdb->prefix . "woocommerce_order_items";
$table_itemmeta = $wpdb->prefix . "woocommerce_order_itemmeta";
// Define HERE the orders status to include in <== <== <== <== <== <== <==
$orders_statuses = "'wc-processing'";
# Requesting All defined statuses Orders IDs for a defined product ID
$orders_ids = $wpdb->get_col( "
SELECT DISTINCT $table_items.order_id
FROM $table_itemmeta, $table_items, $table_posts
WHERE $table_items.order_item_id = $table_itemmeta.order_item_id
AND $table_items.order_id = $table_posts.ID
AND $table_posts.post_status IN ( $orders_statuses )
AND $table_itemmeta.meta_key LIKE '_product_id'
AND $table_itemmeta.meta_value LIKE '$product_id'
AND $table_itemmeta.meta_key LIKE 'order_date'
AND $table_itemmeta.meta_value LIKE '$order_date'
ORDER BY $table_items.order_item_id DESC"
);
// return an array of Orders IDs for the given product ID
return $orders_ids;
}
函数从产品id($product\U id,$order\U date)检索订单id{
全球$wpdb;
$table_posts=$wpdb->前缀“posts”;
$table\u items=$wpdb->prefix.“woocommerce\u order\u items”;
$table\u itemmeta=$wpdb->prefix.“woocommerce\u order\u itemmeta”;
//在此定义要包含在中的订单状态
AND $table_itemmeta.meta_value LIKE 'order_date'
AND $table_itemmeta.meta_value LIKE 'order_date'
应该是
AND $table_itemmeta.meta_key LIKE 'order_date'
AND $table_itemmeta.meta_key LIKE 'order_date'
好的,它有两个问题。首先:
应该是
AND $table_itemmeta.meta_key LIKE 'order_date'
AND $table_itemmeta.meta_key LIKE 'order_date'
第二个是总是刷新$order\u date
,因为我的foreach()
loop.你能在phpmyadmin或Sequel Pro中运行sql语句吗?对其进行故障排除。尝试过。它运行了,但返回的结果是无效的。好的,没有订单日期,它工作并返回id。我想我知道我的问题出在哪里。是的,我修复了它,但仍然没有返回任何值