以下挂钩函数将允许您购买所有内容：

// Change all products stock statuses to \'instock\'
add_filter( \'woocommerce_product_get_stock_status\', \'filter_get_stock_status_callback\', 10, 2 );
add_filter( \'woocommerce_product_variation_get_stock_status\', \'filter_get_stock_status_callback\', 10, 2 );
function filter_get_stock_status_callback( $stock_status, $product ){
    return is_admin() ? $stock_status : \'instock\';
}

// Enable backorders on all products
add_filter( \'woocommerce_product_get_backorders\', \'filter_get_backorders_callback\', 10, 2 );
add_filter( \'woocommerce_product_variation_get_backorders\', \'filter_get_backorders_callback\', 10, 2 );
function filter_get_backorders_callback( $backorders_status, $product ){
    return \'yes\'; // Enable without notifications
}

// Remove the stock quantity from displayed stock status
add_filter( \'woocommerce_get_availability_text\', \'filter_get_availability_text_callback\', 10, 2 );
function filter_get_availability_text_callback( $availability_text, $product ){
    return __( \'In stock\', \'woocommerce\');
}