wordpress tweaks

wp-tweaks.php

<?php

//  remove wp generator
//  https://css-tricks.com/snippets/wordpress/remove-wp-generator-meta-tag/
remove_action('wp_head', 'wp_generator');

//  disable emojis
//  http://wordpress.stackexchange.com/questions/185577/disable-emojicons-introduced-with-wp-4-2
function wpt_disable_emojis() {
   remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
   remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
   remove_action( 'wp_print_styles', 'print_emoji_styles' );
   remove_action( 'admin_print_styles', 'print_emoji_styles' ); 
   remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
   remove_filter( 'comment_text_rss', 'wp_staticize_emoji' ); 
   remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
   add_filter( 'tiny_mce_plugins', 'wpt_disable_emojis_tinymce' );
   add_filter( 'emoji_svg_url', '__return_false' );
}
add_action( 'init', 'wpt_disable_emojis' );

function wpt_disable_emojicons_tinymce( $plugins ) {
  if ( is_array( $plugins ) ) {
    return array_diff( $plugins, array( 'wpemoji' ) );
  } else {
    return array();
  }
}

//  remove unwanted post types
if ( ! function_exists( 'wpt_unregister_post_type' ) ) :
  function wpt_unregister_post_type() {
    global $wp_post_types;
    foreach ( array( 'post', 'avada_portfolio', 'avada_faq' ) as $post_type ) {
      if ( isset( $wp_post_types[ $post_type ] ) ) {
        unset( $wp_post_types[ $post_type ] );
      }
    }
  }
endif;
add_action( 'init', 'wpt_unregister_post_type', 100 );

//  remove unwanted taxonomies
if ( ! function_exists( 'wpt_unregister_taxonomy' ) ) :
function wpt_unregister_taxonomy() {
  global $wp_taxonomies;
  foreach ( array( 'comments' ) as $taxonomy ) {
    if ( taxonomy_exists( $taxonomy ) ) {
      unset( $wp_taxonomies[ $taxonomy ] );
    };
  };
}
endif;
add_action( 'init', 'wpt_unregister_taxonomy', 100 );

// disable support for comments and trackbacks in post types
function wpt_disable_comments_post_types_support() {
  $post_types = get_post_types();
  foreach ($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');
    }
  }
}
add_action('admin_init', 'wpt_disable_comments_post_types_support');


//  disable comments completely
//  https://www.dfactory.eu/turn-off-disable-comments/

// close comments on the front-end
function wpt_disable_comments_status() {
  return false;
}
add_filter( 'comments_open', 'wpt_disable_comments_status', 20, 2 );
add_filter( 'pings_open', 'wpt_disable_comments_status', 20, 2 );

// hide existing comments
function wpt_disable_comments_hide_existing_comments( $comments ) {
  $comments = array();
  return $comments;
}
add_filter( 'comments_array', 'wpt_disable_comments_hide_existing_comments', 10, 2 );

// remove comments page in menu
function wpt_disable_comments_admin_menu() {
  remove_menu_page( 'edit-comments.php' );
}
add_action( 'admin_menu', 'wpt_disable_comments_admin_menu' );

// redirect any user trying to access comments page
function wpt_disable_comments_admin_menu_redirect() {
  global $pagenow;
  if ( $pagenow === 'edit-comments.php' ) {
    wp_redirect(admin_url()); exit;
  }
}
add_action( 'admin_init', 'wpt_disable_comments_admin_menu_redirect' );

// remove comments metabox from dashboard
function wpt_disable_comments_dashboard() {
  remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );
}
add_action( 'admin_init', 'wpt_disable_comments_dashboard' );

// remove comments links from admin bar
function wpt_disable_comments_admin_bar() {
  if ( is_admin_bar_showing() ) {
    remove_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );
  }
}
add_action( 'init', 'wpt_disable_comments_admin_bar' );

//  disable admin bar in frontend for users not logged in with administrator role
function wpt_remove_admin_bar() {
  if ( ! current_user_can('administrator') && !is_admin() ) {
    show_admin_bar(false);
  }
}
add_action('after_setup_theme', 'wpt_remove_admin_bar');