Get grouped product highest price woocommerce - wordpress

Question

I am trying to get grouped products highest price so that i can show only highest price on custom template page.I am using WP_Query to get list of products.
Here is the snippet:
$series_term = $_GET['series'];
$args=array(
'series' => $term_name->slug,
'post_type' => 'product',
'posts_per_page' => 8,
'filter' =>$valuecol,
'tax_query' => array(
array(
'taxonomy' => 'product_cat',
'field' => 'slug',
'terms' => array( 'hidden' ), // Don't display products in the knives category on the shop page
'operator' => 'NOT IN'
)
)
);
// $do_not_duplicate[] = $post->ID;
$my_query = null;
$my_query = new WP_Query($args);
/* Start the Loop */
while ($my_query->have_posts()) : $my_query->the_post();
$feat_prod_img = wp_get_attachment_image_src(get_post_thumbnail_id(), 'post-thumb-single');
$feat_product_img = wp_get_attachment_url( get_post_thumbnail_id($my_query->post->ID) );
?>
<div class="col-md-3 col-sm-4 col-xs-6">
<div class="product-detail">
<div class="product-thmbnial">
<a href="<?php the_permalink(); ?>">
<img src="<?php $src=$feat_product_img; echo image_product_resize_crop( $src, $w=440, $h=275, $dest = null, $override = false, $createNewIfExists = false ); ?>" alt="<?php the_title(); ?>"/>
</a>
</div>
<div class="info"><p><?php the_title(); ?><br/>
<span>
<?php $wp_product = new WC_Product( get_the_ID() );
echo get_woocommerce_currency_symbol(); ?></sup><?php
echo $wp_product->get_price();?></span></p></div>
</div>
</div>
<?php endwhile; ?>
I want grouped product highest price to show in place of $wp_product->get_price();
I tried to get children products and but the array is empty.
foreach ( $wp_product->get_children() as $child_id ) {
$child_prices[] = get_post_meta( $child_id, '_price', true );
}
can anyone suggest me how i can get highest price.
Thanks in advance.

Answer 1

I found the solution.. I tried the same solution earlier but that time it wasn't working.
Here is the fix:
$series_term = $_GET['series'];
$args=array(
'series' => $term_name->slug,
'post_type' => 'product',
'posts_per_page' => 8,
'filter' =>$valuecol,
'tax_query' => array(
array(
'taxonomy' => 'product_cat',
'field' => 'slug',
'terms' => array( 'hidden' ), // Don't display products in the knives category on the shop page
'operator' => 'NOT IN'
)
)
);
// $do_not_duplicate[] = $post->ID;
$my_query = null;
$my_query = new WP_Query($args);
/* Start the Loop */
while ($my_query->have_posts()) : $my_query->the_post();
$feat_prod_img = wp_get_attachment_image_src(get_post_thumbnail_id(), 'post-thumb-single');
$feat_product_img = wp_get_attachment_url( get_post_thumbnail_id($my_query->post->ID) );
?>
<div class="col-md-3 col-sm-4 col-xs-6">
<div class="product-detail">
<div class="product-thmbnial">
<a href="<?php the_permalink(); ?>">
<img src="<?php $src=$feat_product_img; echo image_product_resize_crop( $src, $w=440, $h=275, $dest = null, $override = false, $createNewIfExists = false ); ?>" alt="<?php the_title(); ?>"/>
</a>
</div>
<div class="info"><p><?php the_title(); ?><br/>
<span>
<?php $wp_product = new WC_Product( get_the_ID() );
$child_prices = array();
foreach ( $product->get_children() as $child_id ) {
$child_prices[] = get_post_meta( $child_id, '_price', true );
}
$child_prices = array_unique( $child_prices );
if ( ! empty( $child_prices ) ) {
$min_price = min( $child_prices );
$max_price = max( $child_prices );
} else {
$min_price = '';
$max_price = '';
}
if($min_price == $max_price && !empty($min_price))
{
echo get_woocommerce_currency_symbol(); ?></sup><?php
echo $min_price;
}
elseif(!empty($max_price))
{
echo get_woocommerce_currency_symbol(); ?></sup><?php
echo $max_price;
}
else
{
echo get_woocommerce_currency_symbol(); ?></sup><?php
echo $wp_product->get_price();
}
?></span></p></div>
</div>
</div>
<?php endwhile; ?>