DeveloperWil/wordpress-remove-all-comments-support.php

## wordpress-remove-all-comments-support.php
/**
 * Removes commenting from WordPress
 *
 * Redirects edit comment URL to admin URL
 * Removes comment meta box
 * Removes comments and trackback support for all post types
 */
function zpd_remove_commenting () {
	// Redirect any user trying to access comments page
	global $pagenow;

	if ( $pagenow === 'edit-comments.php' ) {
		wp_redirect( admin_url() );
		exit;
	}

	// Remove comments metabox from dashboard
	remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );

	// Disable support for comments and trackbacks in post types
	foreach ( get_post_types() as $post_type ) {
		if ( post_type_supports( $post_type, 'comments' ) ) {
			remove_post_type_support( $post_type, 'comments' );
			remove_post_type_support( $post_type, 'trackbacks' );
		}
	}

	// Close comments on the front-end
	add_filter( 'comments_open', '__return_false', 20, 2 );
	add_filter( 'pings_open', '__return_false', 20, 2 );

	// Hide existing comments
	add_filter( 'comments_array', '__return_empty_array', 10, 2 );

}
add_action( 'admin_init', 'zpd_remove_commenting');


/**
 * Remove the admin page for comments
 */
function zpd_remove_comments_admin_page() {
	remove_menu_page( 'edit-comments.php' );
}
add_action( 'admin_menu', 'zpd_remove_comments_admin_page' );


/**
 * Remove all comments links from the admin bar
 */
function zpd_remove_admin_bar_comments() {
	if ( is_admin_bar_showing() ) {
		remove_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );
	}
}