Replace my content by a custom field

Hello,

I got a problem, the function don’t go to the end… may be due to a big update (1300 posts) i don’t know.

Can you tell me what’s wrong ?
The function break all my custom post type… and the replace doesn’t work…

add_action( 'get_header', 'my_update_posts' );
function my_update_posts()
{
    if( ! isset( $_GET['update'] ) ) {
        //echo' error';
        return;
    }

	$taxonomies = array(
	    'region',
	);

	$args = array(
	    'orderby'           => 'name',
	    'order'             => 'ASC',
	    'hide_empty'        => true,
	    'exclude'           => array(),
	    'exclude_tree'      => array(),
	    'include'           => array(),
	    'number'            => '',
	    'fields'            => 'all',
	    'slug'              => '',
	    'parent'            => '',
	    'hierarchical'      => true,
	    'child_of'          => 0,
	    'get'               => '',
	    'name__like'        => '',
	    'description__like' => '',
	    'pad_counts'        => false,
	    'offset'            => '',
	    'search'            => '',
	    'cache_domain'      => 'core'
	); 

	$terms_region = get_terms($taxonomies, $args);

	//var_dump($terms_departement);

	//die();

	foreach( $terms_region as $term_region )
	{

    $args = array(
    	'post_type' => 'visite',
    	'posts_per_page' => -1,
    	'post_status' => 'any',
    	'orderby' => 'ASC',
    	'tax_query' => array(
					array(
						'taxonomy' => 'region',
						'field' => 'slug',
						'terms' => $term_region->slug,
						)
					),
		);

    $posts = new wp_query( $args );

	$posts = $posts->posts;
	//var_dump($posts);
	//exit;
    foreach( $posts as $post )
    {
        //setup_postdata( $post );
        //$value = $post->post_content;
        //var_dump($post);
        //die();
        $value = get_post_meta( $post->ID, 'description_visit_factory', true );
        if($value != ''){
        //var_dump($value);
        //exit;

        wp_update_post( array(
            'ID' => $post->ID,
            'post_content' => $value,
        ) );

        echo $post->post_title.' : ok ! <br/>';
		//die();
		} else {
		echo 'NO VALUE !!!';
		}
    }

		echo '##### '.$term_region->name .' : done !<br/><br/>';

		wp_reset_postdata();

	}

	//die();

    echo '###### update complete! #####';

    die();
}

Thank you for help

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