WC_Product_Variable::sort_variation_prices()

To keep variation sorting logic inside the variable product, and separate
from the database storage logic in WC_Product_Variable_Data_Store_CPT

includes/class-wc-product-variable.php

@@ -68,7 +68,14 @@ class WC_Product_Variable extends WC_Product {
 	 */
 	public function get_variation_prices( $include_taxes = false ) {
 		$data_store = $this->get_data_store();
-		return $data_store->read_price_data( $this, $include_taxes );
+
+		$prices = $data_store->read_price_data( $this, $include_taxes );
+
+		foreach ( $prices as $price_key => $variation_prices ) {
+			$prices[ $price_key ] = $this->sort_variation_prices( $variation_prices );
+		}
+
+		return $prices;
 	}
 
 	/**
@@ -485,4 +492,15 @@ class WC_Product_Variable extends WC_Product {
 		}
 		return $product;
 	}
+
+	/**
+	 * Sort an associativate array of $variation_id => $price pairs in order of min and max prices.
+	 *
+	 * @param array $prices Associativate array of $variation_id => $price pairs
+	 * @return array
+	 */
+	protected function sort_variation_prices( $prices ) {
+		asort( $prices );
+		return $prices;
+	}
 }

includes/data-stores/class-wc-product-variable-data-store-cpt.php

@@ -205,10 +205,6 @@ class WC_Product_Variable_Data_Store_CPT extends WC_Product_Data_Store_CPT imple
 					}
 				}
 
-				asort( $prices );
-				asort( $regular_prices );
-				asort( $sale_prices );
-
 				$transient_cached_prices_array[ $price_hash ] = array(
 					'price'         => $prices,
 					'regular_price' => $regular_prices,