WC_Cart::generate_cart_id( int $product_id, int $variation_id, array $variation = array(), array $cart_item_data = array() )
Generate a unique ID for the cart item being added.
Description Description
Parameters Parameters
- $product_id
-
(Required) - id of the product the key is being generated for.
- $variation_id
-
(Required) of the product the key is being generated for.
- $variation
-
(Optional) data for the cart item.
Default value: array()
- $cart_item_data
-
(Optional) other cart item data passed which affects this items uniqueness in the cart.
Default value: array()
Return Return
(string) cart item key
Source Source
File: includes/class-wc-cart.php
public function generate_cart_id( $product_id, $variation_id = 0, $variation = array(), $cart_item_data = array() ) {
$id_parts = array( $product_id );
if ( $variation_id && 0 !== $variation_id ) {
$id_parts[] = $variation_id;
}
if ( is_array( $variation ) && ! empty( $variation ) ) {
$variation_key = '';
foreach ( $variation as $key => $value ) {
$variation_key .= trim( $key ) . trim( $value );
}
$id_parts[] = $variation_key;
}
if ( is_array( $cart_item_data ) && ! empty( $cart_item_data ) ) {
$cart_item_data_key = '';
foreach ( $cart_item_data as $key => $value ) {
if ( is_array( $value ) || is_object( $value ) ) {
$value = http_build_query( $value );
}
$cart_item_data_key .= trim( $key ) . trim( $value );
}
$id_parts[] = $cart_item_data_key;
}
return apply_filters( 'woocommerce_cart_id', md5( implode( '_', $id_parts ) ), $product_id, $variation_id, $variation, $cart_item_data );
}