To make *"this md5 value to be saved only when"* specific products are in cart (or in order items), we need a reusable conditional function that will check items:
```php
// Conditional function: Check if specific products are in cart or order items
function has_items_for_email_md5( $object_items ) {
$found_120 = $found_260 = false; // Initializing
foreach ( $object_items as $item ) {
$product_id = isset($item['product_id']) ? $item['product_id'] : $item->get_product_id();
$variation_id = isset($item['variation_id']) ? $item['variation_id'] : $item->get_variation_id();
if ( in_array('120', [$product_id , $variation_id]) ) $found_120 = true;
if ( in_array('260', [$product_id , $variation_id]) ) $found_260 = true;
}
return ( $found_120 && $found_260 );
}
```
Now we can make some small changes to our previous code, that will use this conditional function:
```php
// When order is created after checkout
add_action( 'woocommerce_checkout_create_order', 'save_billing_email_md5', 20, 2 );
function save_billing_email_md5( $order, $data ) {
if ( ! has_items_for_email_md5( WC()->cart->get_cart() ) ) return;
if( $billing_email = $order->get_billing_email() ) {
$order->add_meta_data('_billing_email_md5', md5($billing_email));
}
}
// When an order is manually created/updated in admin
add_action( 'woocommerce_process_shop_order_meta', 'admin_save_billing_email_md5' );
function admin_save_billing_email_md5( $order_id ) {
$order = wc_get_order( $order_id );
if ( ! has_items_for_email_md5( $order->get_items() ) ) return;
if( $billing_email = $order->get_billing_email() ) {
update_post_meta($order_id, '_billing_email_md5', md5($billing_email));
}
}
```
The last function stay unchanged:
```php
add_filter( 'woocommerce_shop_order_search_fields', 'extending_admin_orders_search_field', 10, 1 );
function extending_admin_orders_search_field( $meta_keys ){
$meta_keys[] = '_billing_email';
$meta_keys[] = '_billing_phone';
$meta_keys[] = '_payment_method_title';
$meta_keys[] = '_billing_email_md5'; // <=== HERE
return $meta_keys;
}
```
It should work.
------
Then to execute some code after purchasing those two specific products (IDs 120 and 260), we will use our conditional function as follows (from an order ID):
```php
$order = wc_get_order( $order_id ); // Get WC_Order object (if needed)
if ( has_items_for_email_md5( $order->get_items() ) ) {
$pro_message = __('Hi dear');
echo $pro_message . __('custom php code');
}
```
First, you need to save as custom metadata the **email md5** when the order is created after checkout:
```php
add_action( 'woocommerce_checkout_create_order', 'save_billing_email_md5', 20, 2 );
function save_billing_email_md5( $order, $data ) {
if( $billing_email = $order->get_billing_email() ) {
$order->add_meta_data('_billing_email_md5', md5($billing_email));
}
}
```
Then also when an order is manually created/updated in admin, add the following:
```php
add_action( 'woocommerce_process_shop_order_meta', 'admin_save_billing_email_md5' );
function admin_save_billing_email_md5( $order_id ) {
if( $billing_email = get_post_meta($order_id, '_billing_email', true) ) {
update_post_meta($order_id, '_billing_email_md5', md5($billing_email));
}
}
```
Then replace function `extending_admin_orders_search_field()` with:
```php
add_filter( 'woocommerce_shop_order_search_fields', 'extending_admin_orders_search_field', 10, 1 );
function extending_admin_orders_search_field( $meta_keys ){
$meta_keys[] = '_billing_email';
$meta_keys[] = '_billing_phone';
$meta_keys[] = '_payment_method_title';
$meta_keys[] = '_billing_email_md5'; // <=== HERE
return $meta_keys;
}
```
Code goes in functions.php file of your child theme (or in a plugin). Tested and works.
This will only work for orders that have the billing email md5 set as custom metadata.
