Update all variations prices of a variable product in Woocommerce

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;).

>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