Disable comments and pingbacks settings for all WordPress network sites

wordpress_disable_comments_pingbacks.php

<?php

// Disables comments and pingbacks settings for all existing sites in a WordPress network
$sites = get_sites();
foreach ( $sites as $site ) {
	switch_to_blog( $site->blog_id );
	update_option( 'default_comment_status', 'closed' );
	update_option( 'default_ping_status', 'closed' );
	restore_current_blog();
}

// Disable comments and pingbacks settings on new network site creation
add_action('wp_initialize_site', 'jbl_wp_initialize_site', 10, 2);
function jbl_wp_initialize_site( $site, $args ) {
	switch_to_blog( $site->blog_id );
	
	update_option( 'default_comment_status', 'closed' );
	update_option( 'default_ping_status', 'closed' );
	
	restore_current_blog();
}

?>