update wp db batch

<?php
echo'<pre>';
// Include the wp-load'er
include('wp-load.php');

$query = new WP_Query( array( 'post_type' => 'portfolio_page', 'posts_per_page' => '-1' ) );
while ($query->have_posts()) : $query->the_post();
	$ids="";
$ids = get_post_meta($post->ID, 'qode_portfolio-image-gallery');
//print_R( $ids );
if ($ids[0]!='') {
	$my_post = array(
      'ID'           => $post->ID,
      'post_content' => $post->post_content." [gallery ids=\"".$ids[0]."\"]"
  );
// Update the post into the database
  wp_update_post( $my_post );
  echo 'update product ID '.$post->ID;
}
endwhile;