Disable WordPress Comments

gistfile1.php

<?php

namespace DisableComments;

add_action( 'init', 'DisableComments\disable_comments_post_types_support' );
add_filter( 'comments_array', 'DisableComments\disable_comments_hide_existing_comments', 10, 2 );
add_action( 'admin_menu', 'DisableComments\disable_comments_admin_menu' );
add_action( 'admin_init', 'DisableComments\disable_comments_admin_menu_redirect' );
add_action( 'admin_init', 'DisableComments\disable_comments_dashboard' );
add_action( 'init', 'DisableComments\disable_comments_admin_bar' );

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

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

// Hide existing comments
function disable_comments_hide_existing_comments( $comments ) {

	$comments = array();
	return $comments;

}

// Remove comments page in menu
function disable_comments_admin_menu() {

	remove_menu_page( 'edit-comments.php' );

}

// Redirect any user trying to access comments page
function disable_comments_admin_menu_redirect() {

	global $pagenow;

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

}

// Remove comments metabox from dashboard
function disable_comments_dashboard() {
	remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );
}

// Remove comments links from admin bar
function disable_comments_admin_bar() {
	if ( is_admin_bar_showing() ) {
		remove_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );

	}
}