wc_delete_related_product_transients() │ WC 9.8.0

Delete all related products transients when a product is updated/created. This is necessary because changing one product affects all related products too.

No Hooks.

Returns

null. Nothing (null).

Usage

wc_delete_related_product_transients( $post_id );

$post_id(int) (required)

The product ID updated/created.

Changelog

wc_delete_related_product_transients() wc delete related product transients code ^{WC 10.3.3}

function wc_delete_related_product_transients( $post_id ) {
	wc_deprecated_function( 'wc_delete_related_product_transients', '10.1.0', 'This function is deprecated and will be removed in a future version.' );

	if ( ! is_numeric( $post_id ) ) {
		return;
	}

	$transient_name          = 'wc_related_' . $post_id;
	$old_transient           = get_transient( $transient_name );
	$old_related_product_ids = array();

	if ( is_array( $old_transient ) && ! empty( $old_transient ) ) {
		$old_related_product_ids = $old_transient[ array_key_first( $old_transient ) ];
	}

	// Delete current product transient so that it can be refreshed below.
	delete_transient( $transient_name );

	// Gets new related products and sets current product transient.
	$new_related_product_ids = wc_get_related_products( $post_id, 1000 );

	// Combine all product IDs that need their transients cleared.
	$related_product_ids = array_unique(
		array_merge(
			$old_related_product_ids,
			$new_related_product_ids
		)
	);

	if ( empty( $related_product_ids ) ) {
		return;
	}

	// Create the list of transient names to delete.
	$related_product_transients = array_map(
		function ( $id ) {
			return 'wc_related_' . $id;
		},
		$related_product_ids
	);
	_wc_delete_transients( $related_product_transients );
}