Update all variations prices of a variable product in Woocommerce - php

Question

I need to get all variation id and update price in loop.
Simple query and loop looks like:
$params = array(
‘posts_per_page’ => -1,
‘post_type’ => ‘product_variation’,
‘post_parent’ => $product->get_id() // tried $post-ID
);
$variations = get_posts( $params );
foreach ( $variations as $variation ) {
$variation_ID = $variation->ID; // tried $post-ID, $product->get_id()
$regular_price=34;
update_post_meta( $variation_ID, ‘_regular_price’, (float)$regular_price );
update_post_meta( $variation_ID, ‘_price’, (float)$regular_price );
}
This doesn't seem to work:
(‘post_parent’ => $product->get_id())
Neither does this:
($variation_ID = $variation->ID;).

Answer 1

First in your code ‘ or ’ should be replaced by '.
Also if used $post-ID should be replaced by $post->ID
Depending on where and how you are using this code, you should try to include global $post; first to be able to use the WP_Post object $post.
Then you could try to use this customized version of your code instead:
global $post;
$regular_price = 13;
// Only for product post type
if( $post->post_type == 'product' )
$product = wc_get_product( $post->ID ); // An instance of the WC_Product object
// Only for variable products
if( $product->is_type('variable') ){
foreach( $product->get_available_variations() as $variation_values ){
$variation_id = $variation_values['variation_id']; // variation id
// Updating active price and regular price
update_post_meta( $variation_id, '_regular_price', $regular_price );
update_post_meta( $variation_id, '_price', $regular_price );
wc_delete_product_transients( $variation_id ); // Clear/refresh the variation cache
}
// Clear/refresh the variable product cache
wc_delete_product_transients( $post->ID );
}
This code is tested on WooCommerce version 3+ and works