我使用了错误的方法wp\\u remote\\u post（）将起作用。

以下是修复代码：

$args = array(
\'method\'      => \'POST\',
\'timeout\'     => 45,
\'redirection\' => 5,
\'httpversion\' => \'1.0\',
\'body\'     => array(
    \'store_name\' => $stidStore_name,
    \'customer_name\' =>$stidCustomer_name,
    \'payment_type\'=> $stidPaymen_type,
    \'amount\'=> $stidAmount,
    \'customer_address\'=> $stidCustomer_country,
),
);
$request = wp_remote_post( $stidUrl, $args);

$response = wp_remote_retrieve_body( $request );
$response = json_decode($response);