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https://github.com/mnestorov/wp-snippets
A compilation of WordPress / WooCommerce code snippets and functions for developers who wants to create their own themes.
https://github.com/mnestorov/wp-snippets
snippets woocommerce woocommerce-snippet wordpress wordpress-snippets wp wp-snippets
Last synced: 3 months ago
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A compilation of WordPress / WooCommerce code snippets and functions for developers who wants to create their own themes.
- Host: GitHub
- URL: https://github.com/mnestorov/wp-snippets
- Owner: mnestorov
- Created: 2019-01-31T14:45:35.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2023-11-30T10:04:52.000Z (about 1 year ago)
- Last Synced: 2023-12-01T10:38:44.572Z (about 1 year ago)
- Topics: snippets, woocommerce, woocommerce-snippet, wordpress, wordpress-snippets, wp, wp-snippets
- Homepage:
- Size: 213 KB
- Stars: 4
- Watchers: 1
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# WordPress - Snippets
## Overview
This is a list of useful **WordPress** and **WooCommerce** code snippets and functions that I often reference to enhance or clean up my sites.
**Note:** Please be careful and make backups!
## WordPress
- [Hide WordPress Update Nag To All But Admins](#hide-wordpress-update-nag-to-all-but-admins)
- [Utilize Proper WordPress Titles](#utilize-proper-wordpress-titles)
- [Create Custom WordPress Dashboard Widget](#create-custom-wordpress-dashboard-widget)
- [Remove All Dashboard Widgets](#remove-all-dashboard-widgets)
- [Include Navigation Menus](#include-navigation-menus)
- [Insert Custom Login Logo](#insert-custom-login-logo)
- [Modify Admin Footer Text](#modify-admin-footer-text)
- [Enqueue Styles And Scripts](#enqueue-styles-and-scripts)
- [Enqueue Google Fonts](#enqueue-google-fonts)
- [Modify Excerpt Length](#modify-excerpt-length)
- [Change Read More Link](#change-read-more-link)
- [Change More Excerpt](#change-more-excerpt)
- [Disable Emoji Mess](#disable-emoji-mess)
- [Remove Comments](#remove-comments)
- [Change Media Gallery URL](#change-media-gallery-url)
- [Create Custom Thumbnail Size](#create-custom-thumbnail-size)
- [Allow Additional File Formats For The Media Library](#allow-additional-file-formats-for-the-media-library)
- [Add Categories For Attachments](#add-categories-for-attachments)
- [Add Tags For Attachments](#add-tags-for-attachments)
- [Add Custom Excerpt To Pages](#add-custom-excerpt-to-pages)
- [Create A Global String](#create-a-global-string)
- [Support Featured Images](#support-featured-images)
- [Support Search Form](#support-search-form)
- [Excluding pages from search](#excluding-pages-from-search)
- [Disable XMLRPC](#disable-xmlrpcphp)
- [Escape HTML In Posts](#escape-html-in-posts)
- [Create Custom Global Settings](#create-custom-global-settings)
- [Remove WordPress Admin Bar](#remove-wordpress-admin-bar)
- [Add Open Graph Meta Tags](#add-open-graph-meta-tags)
- [Add Custom Post Type](#add-custom-post-type)
- [Implement Preconnect To Google Fonts In Themes](#implement-preconnect-to-google-fonts-in-themes)
- [Add Thumbnail Column To Post Listing](#add-thumbnail-column-to-post-listing)
- [Add Lead Class To First Paragraph](#add-lead-class-to-first-paragraph)
- [Exclude Custom Post Type From Search](#exclude-custom-post-type-from-search)
- [Remove Query String From Static Resources](#remove-query-string-from-static-resources)
- [Disable Website Field From Comment Form](#disable-website-field-from-comment-form)
- [Modify jQuery](#modify-jquery)
- [Disable JSON Rest API](#disable-json-rest-api)
- [Switch Post Type](#switch-post-type)
- [PHP Logger](#php-logger)
- [Always Show Second Bar In TinyMCE](#always-show-second-bar-in-tinymce)
- [Remove Admin Menu Items Depending On User Role](#remove-admin-menu-items-depending-on-user-role)
- [Remove Admin Menu Items Depending On Email Address (Domain)](#remove-admin-menu-items-depending-on-email-address-domain)
- [Reorder Admin Menu Items](#reorder-admin-menu-items)
- [Exclude A Category From WordPress Loops](#exclude-a-category-from-wordpress-loops)
- [Disable The JQMIGRATE Warning Message](#disable-the-jqmigrate-warning-message)
- [Disable Gutenberg From WordPress 5 Without A Plugin](#disable-gutenberg-from-wordpress-5-without-a-plugin)
- [Disable Automatic Updates In WordPress](#disable-automatic-updates-in-wordpress)
- [Disable Automatic WordPress Plugin Updates](#disable-automatic-wordpress-plugin-updates)
- [Disable Automatic WordPress Theme Updates](#disable-automatic-wordpress-theme-updates)
- [Cleanup Image Edits In WordPress](#cleanup-image-edits-in-wordpress)
- [Specify The Number Of Post Revisions](#specify-the-number-of-post-revisions)
- [Disable Post Revisions](#disable-post-revisions)
- [Show Popular Posts Without Plugins](#show-popular-posts-without-plugins)
- [Linking Images Within A Theme](#linking-images-within-a-theme)
- [Display Different Menus To Logged-In Users](#display-different-menus-to-logged-in-users)
- [Send Email To Admin If User Updated His Profile](#send-email-to-admin-if-user-updated-his-profile)
- [Create New Custom Widget](#create-new-custom-widget)
## WooCommerce
- [Create A Message For Remaining Amount Of A Purchase For Free Delivery In WooCommerce](#create-a-message-for-remaining-amount-of-a-purchase-for-free-delivery-in-woocommerce)
- [Change The Appearance Of A Foreign Currency In WooCommerce](#change-the-appearance-of-a-foreign-currency-in-woocommerce)
- [Remove Specific Product Tabs In WooCommerce](#remove-specific-product-tabs-in-woocommerce)
- [Add A Message To The Login Or Registration Form In WooCommerce](#add-a-message-to-the-login-or-registration-form-in-woocommerce)
- [Display All Products Purchased By User Via Shortcode In WooCommerce](#display-all-products-purchased-by-user-via-shortcode-in-woocommerce)
- [How To Add Custom Post Type To WooCommerce](#how-to-add-custom-post-type-to-woocommerce)
- [How To Add A New Tab At My Account Page In WooCommerce](#how-to-add-a-new-tab-at-my-account-page-in-woocommerce)
- [How To Reorder A Custom Tab At My Account Page In WooCommerce](#how-to-reorder-a-custom-tab-at-my-account-page-in-woocommerce)
## Security
- [Disable Theme Or Plugin Editor In WP Admin](#disable-theme-or-plugin-editor-in-wp-admin)
- [Remove WordPress Version](#remove-wordpress-version)
## Other
- [Default robots.txt For WordPress](#default-robotstxt-for-wordpress)
- [Simple .htaccess For WordPress](#simple-htaccess-for-wordpress)
---
## WordPress
### Hide WordPress Update Nag To All But Admins
```php
/**
* Hide WordPress update nag to all but admins
*/
function hide_update_notice_to_all_but_admin() {
if ( !current_user_can( 'update_core' ) ) {
remove_action( 'admin_notices', 'update_nag', 3 );
}
}
add_action( 'admin_head', 'hide_update_notice_to_all_but_admin', 1 );
```
### Utilize Proper WordPress Titles
Make sure to remove the `` tag from your header.
```php
/**
* Utilize proper WordPress titles
*/
add_theme_support( 'title-tag' );
```
### Create Custom WordPress Dashboard Widget
```php
/**
* Create custom WordPress dashboard widget
*/
function dashboard_widget_function() {
echo '
Custom Dashboard Widget
Custom content here
';
}
function add_dashboard_widgets() {
wp_add_dashboard_widget( 'custom_dashboard_widget', 'Custom Dashoard Widget', 'dashboard_widget_function' );
}
add_action( 'wp_dashboard_setup', 'add_dashboard_widgets' );
```
### Remove All Dashboard Widgets
```php
/**
* Remove all dashboard widgets
*/
function remove_dashboard_widgets() {
global $wp_meta_boxes;
unset( $wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press'] );
unset( $wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links'] );
unset( $wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now'] );
unset( $wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins'] );
unset( $wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_drafts'] );
unset( $wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments'] );
unset( $wp_meta_boxes['dashboard']['side']['core']['dashboard_primary'] );
unset( $wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary'] );
remove_meta_box( 'dashboard_activity', 'dashboard', 'normal' );
}
add_action( 'wp_dashboard_setup', 'remove_dashboard_widgets' );
```
### Include Navigation Menus
```php
/**
* Include navigation menus
*/
function register_my_menu() {
register_nav_menu( 'nav-menu', __( 'Navigation Menu' ) );
}
add_action( 'init', 'register_my_menu' );
```
Insert this where you want it to appear, and save the menu in **Appearance -> Menus**.
```php
wp_nav_menu( array( 'theme_location' => 'nav-menu' ) );
```
Here's the code for multiple menus:
```php
function register_my_menus() {
register_nav_menus(
array(
'new-menu' => __( 'New Menu' ),
'another-menu' => __( 'Another Menu' ),
'an-extra-menu' => __( 'An Extra Menu' ),
)
);
}
add_action( 'init', 'register_my_menus' );
```
### Insert Custom Login Logo
```php
/**
* Insert custom login logo
*/
function custom_login_logo() {
echo '
.login h1 a {
background-image: url(image.jpg) !important;
background-size: 234px 67px;
width:234px;
height:67px;
display:block;
}
';
}
add_action( 'login_head', 'custom_login_logo' );
```
### Modify Admin Footer Text
```php
/**
* Modify admin footer text
*/
function modify_footer() {
echo 'Created by you.';
}
add_filter( 'admin_footer_text', 'modify_footer' );
```
### Enqueue Styles And Scripts
```php
/**
* Enqueue styles and scripts
*/
function custom_scripts() {
wp_enqueue_style( 'bootstrap', get_template_directory_uri() . '/css/bootstrap.min.css', array(), '3.3.6' );
wp_enqueue_style( 'style', get_template_directory_uri() . '/css/style.css' );
wp_enqueue_script( 'bootstrap', get_template_directory_uri() . '/js/bootstrap.min.js', array('jquery'), '3.3.6', true );
wp_enqueue_script( 'script', get_template_directory_uri() . '/js/script.js' );
}
add_action( 'wp_enqueue_scripts', 'custom_scripts' );
```
### Enqueue Google Fonts
```php
/**
* Enqueue Google Fonts
*/
function google_fonts() {
wp_register_style( 'OpenSans', '//fonts.googleapis.com/css?family=Open+Sans:400,600,700,800' );
wp_enqueue_style( 'OpenSans' );
}
add_action( 'wp_print_styles', 'google_fonts' );
```
### Modify Excerpt Length
```php
/**
* Modify excerpt length
*/
function custom_excerpt_length( $length ) {
return 25;
}
add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );
```
### Change Read More Link
```php
/**
* Change Read More link
*/
function custom_read_more_link() {
return 'Read More';
}
add_filter( 'the_content_more_link', 'custom_read_more_link' );
```
### Change More Excerpt
```php
/**
* Change More excerpt
*/
function custom_more_excerpt( $more ) {
return '...';
}
add_filter( 'excerpt_more', 'custom_more_excerpt' );
```
### Disable Emoji Mess
```php
/**
* Disable Emoji mess
*/
function disable_wp_emojicons() {
remove_action( 'admin_print_styles', 'print_emoji_styles' );
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_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );
add_filter( 'tiny_mce_plugins', 'disable_emojicons_tinymce' );
add_filter( 'emoji_svg_url', '__return_false' );
}
add_action( 'init', 'disable_wp_emojicons' );
function disable_emojicons_tinymce( $plugins ) {
return is_array( $plugins ) ? array_diff( $plugins, array( 'wpemoji' ) ) : array();
}
```
### Remove Comments
```php
/**
* Remove comments
*/
// Removes from admin menu
function my_remove_admin_menus() {
remove_menu_page( 'edit-comments.php' );
}
add_action( 'admin_menu', 'my_remove_admin_menus' );
// Removes from post and pages
function remove_comment_support() {
remove_post_type_support( 'post', 'comments' );
remove_post_type_support( 'page', 'comments' );
}
add_action( 'init', 'remove_comment_support', 100 );
// Removes from admin bar
function mytheme_admin_bar_render() {
global $wp_admin_bar;
$wp_admin_bar->remove_menu( 'comments' );
}
add_action( 'wp_before_admin_bar_render', 'mytheme_admin_bar_render' );
```
### Change Media Gallery URL
```php
/**
* Change Media Gallery URL
*/
if ( empty( get_option( 'upload_url_path' ) ) ) {
update_option( 'upload_url_path', 'http://assets.website.com/wp-content/uploads' );
}
```
Also, you can filter the option value before it's retrieved from the database, which is slightly better:
```php
/**
* Change Media Gallery URL
*/
add_filter( 'pre_option_upload_url_path', function() {
return 'http://assets.website.com/wp-content/uploads';
});
```
### Create Custom Thumbnail Size
```php
/**
* Create custom thumbnail size
*/
add_image_size( 'custom-thumbnail', 250, 250, true );
```
**Retrieve Thumbnail**
```php
$thumb = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), 'custom-thumbnail' );
echo $thumb[0];
```
Since WordPress 4.4.0, you can use:
```php
the_post_thumbnail_url( $size );
```
### Allow Additional File Formats For the Media Library
```php
/**
* This code allows you to upload the file formats ZIP, MOBI, PDF, and EPUB
*/
function add_custom_mime_types( $mimes ) {
$new_file_types = array (
'zip' => 'application/zip',
'mobi' => 'application/x-mobipocket-ebook',
'pdf' => 'application/pdf',
'epub' => 'application/epub+zip'
);
return array_merge( $mimes, $new_file_types );
}
add_filter( 'upload_mimes', 'add_custom_mime_types' );
```
### Add Categories For Attachments
```php
/**
* Add categories for attachments
*/
function add_categories_for_attachments() {
register_taxonomy_for_object_type( 'category', 'attachment' );
}
add_action( 'init' , 'add_categories_for_attachments' );
```
### Add Tags For Attachments
```php
/**
* Add tags for attachments
*/
function add_tags_for_attachments() {
register_taxonomy_for_object_type( 'post_tag', 'attachment' );
}
add_action( 'init' , 'add_tags_for_attachments' );
```
### Add Custom Excerpt To Pages
```php
/**
* Add custom excerpt to pages
*/
function add_page_excerpt() {
add_post_type_support( 'page', array( 'excerpt' ) );
}
add_action( 'init', 'add_page_excerpt' );
```
### Create A Global String
```php
/**
* Create a global string
*/
function global_string() {
return 'String';
}
```
**Retrieve Field**
```php
echo global_string();
```
### Support Featured Images
```php
/**
* Support featured images
*/
add_theme_support( 'post-thumbnails' );
```
### Support Search Form
```php
/**
* Support search form
*/
add_theme_support( 'html5', array( 'search-form' ) );
```
### Excluding Pages From Search
```php
/**
* Excluding pages from search
*/
function exclude_pages_from_search() {
global $wp_post_types;
$wp_post_types['page']->exclude_from_search = true;
}
add_action( 'init', 'exclude_pages_from_search' );
```
### Disable xmlrpc.php
```php
/**
* Disable xmlrpc.php
*/
add_filter( 'xmlrpc_enabled', '__return_false' );
remove_action( 'wp_head', 'rsd_link' );
remove_action( 'wp_head', 'wlwmanifest_link' );
```
### Escape HTML In Posts
```php
/**
* Escape HTML in or tags.
*/
function escapeHTML($arr) {
if (version_compare(PHP_VERSION, '5.2.3') >= 0) {
$output = htmlspecialchars($arr[2], ENT_NOQUOTES, get_bloginfo('charset'), false);
} else {
$specialChars = array(
'&' => '&',
'<' => '<',
'>' => '>'
);
// decode already converted data
$data = htmlspecialchars_decode( $arr[2] );
// escape all data inside
$output = strtr( $data, $specialChars );
}
if (! empty($output)) {
return $arr[1] . $output . $arr[3];
} else {
return $arr[1] . $arr[2] . $arr[3];
}
}
function filterCode( $data ) { // Uncomment if you want to escape anything within a
tag
//$modifiedData = preg_replace_callback( '@()(.*)(<\/pre>)@isU', 'escapeHTML', $data );
$modifiedData = preg_replace_callback( '@()(.*)(<\/code>)@isU', 'escapeHTML', $data );
$modifiedData = preg_replace_callback( '@()(.*)(<\/tt>)@isU', 'escapeHTML', $modifiedData );
return $modifiedData;
}
add_filter( 'content_save_pre', 'filterCode', 9 );
add_filter( 'excerpt_save_pre', 'filterCode', 9 );
```
Modified from [Escape HTML](https://wordpress.org/plugins/escape-html/).
### Create Custom Global Settings
```php
/**
* Create custom global settings
*/
function custom_settings_page() { ?>
Custom Settings
ID ) ) {
$img_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'thumbnail' );
}
$excerpt = strip_tags( $post->post_content );
$excerpt_more = '';
if ( strlen($excerpt ) > 155) {
$excerpt = substr( $excerpt,0,155 );
$excerpt_more = ' ...';
}
$excerpt = str_replace( '"', '', $excerpt );
$excerpt = str_replace( "'", '', $excerpt );
$excerptwords = preg_split( '/[\n\r\t ]+/', $excerpt, -1, PREG_SPLIT_NO_EMPTY );
array_pop( $excerptwords );
$excerpt = implode( ' ', $excerptwords ) . $excerpt_more; ?>
array(
'name' => __( 'Custom Post' ),
),
'public' => true,
'hierarchical' => true,
'has_archive' => true,
'supports' => array(
'title',
'editor',
'excerpt',
'thumbnail',
),
'can_export' => true,
'taxonomies' => array(
'post_tag',
category',
)
));
}
add_action( 'init', 'create_custom_post' );
```
**WordPress Codex**
[Function Reference/register post type](https://codex.wordpress.org/Function_Reference/register_post_type)
**WordPress Developer Resources**
[Dashicons](https://developer.wordpress.org/resource/dashicons/#menu)
### Implement Preconnect To Google Fonts In Themes
```php
/**
* Implement preconnect to Google Fonts in themes
*/
function twentyfifteen_resource_hints( $urls, $relation_type ) {
// Checks whether the subject is carrying the source of fonts google and the `$relation_type` equals preconnect.
// Replace `enqueue_font_id` the `ID` used in loading the source.
if ( wp_style_is( 'enqueue_font_id', 'queue' ) && 'preconnect' === $relation_type ) {
// Checks whether the version of WordPress is greater than or equal to 4.7
// to ensure compatibility with older versions
// because the 4.7 has become necessary to return an array instead of string
if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '>=' ) ) {
// Array with url google fonts and crossorigin
$urls[] = array(
'href' => 'https://fonts.gstatic.com',
'crossorigin',
);
} else {
// String with url google fonts
$urls[] = 'https://fonts.gstatic.com';
}
}
return $urls;
}
add_filter( 'wp_resource_hints', 'twentyfifteen_resource_hints', 10, 2 );
```
### Add Thumbnail Column To Post Listing
```php
/**
* Add thumbnail column to post listing
*/
add_image_size( 'admin-list-thumb', 80, 80, false );
function wpcs_add_thumbnail_columns( $columns ) {
if ( !is_array( $columns ) ) {
$columns = array();
}
$new = array();
foreach( $columns as $key => $title ) {
if ( $key == 'title' ) { // Put the Thumbnail column before the Title column
$new['featured_thumb'] = __( 'Image');
}
$new[$key] = $title;
}
return $new;
}
function wpcs_add_thumbnail_columns_data( $column, $post_id ) {
switch ( $column ) {
case 'featured_thumb':
echo '';
echo the_post_thumbnail( 'admin-list-thumb' );
echo '';
break;
}
}
if ( function_exists( 'add_theme_support' ) ) {
add_filter( 'manage_posts_columns' , 'wpcs_add_thumbnail_columns' );
add_action( 'manage_posts_custom_column' , 'wpcs_add_thumbnail_columns_data', 10, 2 );
}
```
### Add Lead Class To First Paragraph
```php
/**
* Add lead class to first paragraph
*/
function first_paragraph( $content ) {
return preg_replace( '/
]+)?>/', '
', $content, 1 );
}
add_filter( 'the_content', 'first_paragraph' );
```
Adds a `lead` class to the first paragraph in [the_content](https://developer.wordpress.org/reference/functions/the_content/).
### Exclude Custom Post Type From Search
```php
/**
* Exclude custom post type from search
*/
function excludePages( $query ) {
if ( $query->is_search ) {
$query->set( 'post_type', 'post' );
}
return $query;
}
add_filter( 'pre_get_posts','excludePages' );
```
### Remove Query String From Static Resources
```php
/**
* Remove query string from static resources
*/
function remove_cssjs_ver( $src ) {
if ( strpos( $src, '?ver=' ) ) {
$src = remove_query_arg( 'ver', $src );
}
return $src;
}
add_filter( 'style_loader_src', 'remove_cssjs_ver', 10, 2 );
add_filter( 'script_loader_src', 'remove_cssjs_ver', 10, 2 );
```
### Modify jQuery
```php
/**
* Modify jQuery
*/
function modify_jquery() {
wp_deregister_script( 'jquery' );
wp_register_script( 'jquery', 'https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js', false, '3.2.1' );
wp_enqueue_script( 'jquery' );
}
if ( ! is_admin() ) add_action( 'wp_enqueue_scripts', 'modify_jquery' );
```
### Disable Website Field From Comment Form
```php
/**
* Disable website field from comment form
*/
function disable_website_field( $field ) {
if( isset($field['url']) ) {
unset( $field['url'] );
}
return $field;
}
add_filter('comment_form_default_fields', 'disable_website_field');
```
### Disable JSON REST API
```php
/**
* Disable JSON REST API
*/
add_filter( 'json_enabled', '__return_false' );
add_filter( 'json_jsonp_enabled', '__return_false' );
```
### Switch Post Type
```php
/**
* Switch post type
*/
function switch_post_type ( $old_post_type, $new_post_type ) {
global $wpdb;
// Run the update query
$wpdb->update(
$wpdb->posts,
// Set
array( 'post_type' => $new_post_type),
// Where
array( 'post_type' => $old_post_type )
);
}
```
### PHP Logger
```php
/**
* PHP Logger
*/
function php_logger( $data ) {
$output = $data;
if ( is_array( $output ) )
$output = implode( ',', $output );
// print the result into the JavaScript console
echo "console.log( 'PHP LOG: " . $output . "' );";
}
```
### Always Show Second Bar In TinyMCE
```php
/**
* Always show second bar in TinyMCE
*/
function show_tinymce_toolbar( $in ) {
$in['wordpress_adv_hidden'] = false;
return $in;
}
add_filter( 'tiny_mce_before_init', 'show_tinymce_toolbar' );
```
### Remove Admin Menu Items Depending On User Role
```php
/**
* Clone the administrator user role
*/
function clone_admin_role() {
global $wp_roles;
if ( ! isset( $wp_roles ) )
$wp_roles = new WP_Roles();
$adm = $wp_roles->get_role( 'administrator' );
// Add new "Client" role with all admin capabilities
$wp_roles->add_role( 'client', 'Client', $adm->capabilities );
}
add_action( 'init', 'clone_admin_role' );
/**
* Specify which admin menu items are visible for users with role "Client"
*/
function remove_dashboard_menus() {
if ( current_user_can( 'client' ) ) {
// Hide Updates under Dashboard menu
remove_submenu_page( 'index.php', 'update-core.php' );
// Hide Comments
remove_menu_page( 'edit-comments.php' );
// Hide Plugins
remove_menu_page( 'plugins.php' );
// Hide Themes, Customizer and Widgets under Appearance menu
remove_submenu_page( 'themes.php', 'themes.php' );
remove_submenu_page( 'themes.php', 'customize.php?return=' . urlencode( $_SERVER['REQUEST_URI'] ) );
remove_submenu_page( 'themes.php', 'widgets.php' );
// Hide Tools
remove_menu_page( 'tools.php' );
// Hide General Settings
remove_menu_page( 'options-general.php' );
}
}
add_action( 'admin_menu', 'remove_dashboard_menus' );
```
### Remove Admin Menu Items Depending On Email Address (domain)
```php
/**
* Specify which users can see admin menu items based on their email address
*/
function remove_dashboard_menus() {
$user_data = get_userdata( get_current_user_id() );
$user_email = isset( $user_data->user_email ) ? $user_data->user_email : '';
if ( ! strpos( $user_email, '@yourcompany.com' ) ) {
// Hide Updates under Dashboard menu
remove_submenu_page( 'index.php', 'update-core.php' );
// Hide Comments
remove_menu_page( 'edit-comments.php' );
// Hide Plugins
remove_menu_page( 'plugins.php' );
// Hide Themes, Customizer and Widgets under Appearance menu
remove_submenu_page( 'themes.php', 'themes.php' );
remove_submenu_page( 'themes.php', 'customize.php?return=' . urlencode( $_SERVER['REQUEST_URI'] ) );
remove_submenu_page( 'themes.php', 'widgets.php' );
// Hide Tools
remove_menu_page( 'tools.php' );
// Hide General Settings
remove_menu_page( 'options-general.php' );
}
}
add_action( 'admin_menu', 'remove_dashboard_menus' );
```
### Reorder Admin Menu Items
```php
/**
* Reorder the Admin Menu
*/
function custom_menu_order( $menu_ord ) {
if ( ! $menu_ord ) { return true; }
return array(
'index.php',
'separator1',
'edit.php?post_type=page',
'edit.php',
'edit.php?post_type=[your_post_type_slug]',
'upload.php',
'edit-comments.php',
'separator2',
'themes.php',
'plugins.php',
'users.php',
'tools.php',
'options-general.php'
);
}
}
add_filter( 'custom_menu_order', 'custom_menu_order' );
add_filter( 'menu_order', 'custom_menu_order' );
```
### Exclude A Category From WordPress Loops
```php
/**
* Exclude a category from all WordPress loops
*/
add_action( 'pre_get_posts', function( $query ) { // anonymous callback
global $wp_query;
// Hard coded category ID, but can be dynamic: esc_attr(get_option('your-cat-id'));
$excluded_cat_id = 25;
// add category ID to existing, avoid overwriting it
$cat[] = $query->get( 'cat' );
$cat[] = "-" . $excluded_cat_id;
$query->set( 'cat', $cat );
}
});
```
### Disable The JQMIGRATE Warning Message
```php
/**
* Disable the message "JQMIGRATE: Migrate is installed version 1.4.1"
*/
add_action('wp_default_scripts', function ($scripts) {
if (!empty($scripts->registered['jquery'])) {
$scripts->registered['jquery']->deps = array_diff($scripts->registered['jquery']->deps, ['jquery-migrate']);
}
});
```
### Disable Gutenberg From WordPress 5 Without A Plugin
```php
add_filter( 'use_block_editor_for_post', '__return_false' );
```
### Disable Automatic Updates In WordPress
```php
define( 'WP_AUTO_UPDATE_CORE', false );
```
**How to implement**
You can disable automatic updates in WordPress by adding this line of code in your **_wp-config.php_**.
### Disable Automatic WordPress Plugin Updates
```php
add_filter( 'auto_update_plugin', '__return_false' );
```
### Disable Automatic WordPress Theme Updates
```php
add_filter( 'auto_update_theme', '__return_false' );
```
### Cleanup Image Edits In WordPress
```php
define( 'IMAGE_EDIT_OVERWRITE', true );
```
By default, WordPress creates a new set of images every time an image is edited. When you restore the original image, the edits are stored on the server. Defining **_IMAGE_EDIT_OVERWRITE_** as **_true_** changes this behaviour. Only one set of image edits are ever created and when you restore the original, the edits are removed from the server.
**How to implement**
You can define cleanup image edits in WordPress by adding this line of code in your **_wp-config.php_**.
### Specify The Number Of Post Revisions
```php
define('WP_POST_REVISIONS', 3);
```
If you want to specify a maximum number of revisions, change false to an integer/number (e.g., 3 or 5).
**How to implement**
You can specify the number of post revisions in WordPress by adding this line of code in your **_wp-config.php_**.
### Disable Post Revisions
```php
define( 'WP_POST_REVISIONS', false );
```
By default, WordPress will save copies of each edit made to a post or page, allowing the possibility of reverting to a previous version of that post or page. The saving of revisions can be disabled, or a maximum number of revisions per post or page can be specified.
**How to implement**
You can disable post revisions in WordPress by adding this line of code in your **_wp-config.php_**.
### Show Popular Posts Without Plugins
```php
/**
* Show Popular Posts Without Plugins
*/
function count_post_visits() {
if( is_single() ) {
global $post;
$views = get_post_meta( $post->ID, 'my_post_viewed', true );
if( $views == '' ) {
update_post_meta( $post->ID, 'my_post_viewed', '1' );
} else {
$views_no = intval( $views );
update_post_meta( $post->ID, 'my_post_viewed', ++$views_no );
}
}
}
add_action( 'wp_head', 'count_post_visits' );
```
### Linking Images Within A Theme
```php
;%20?>/img/image.png)
```
or
```php
;%20?>/images/image.jpg)
```
### Display Different Menus To Logged-In Users
```php
function nav_menu_args( $args = '' ) {
if ( is_user_logged_in() ) {
$args['menu'] = 'Logged-In'; // we need to create this menu
} else {
$args['menu'] = 'Primary Menu'; // we need to create this menu
}
return $args;
}
add_filter( 'wp_nav_menu_args', 'nav_menu_args' );
```
### Send Email To Admin If User Updated His Profile
```php
function user_profile_update( $user_id ) {
$user_info = get_userdata( $user_id );
$to = get_option( 'admin_email' );
$subject = 'User Profile Updated';
$message = "Hello Administrator,\n\nThe " . $user_info->user_nicename . " (" . $user_info->user_email . ") profile has been updated! \n\n";
$message .= "Site URL: " . get_bloginfo( 'wpurl' ) . "\n\n";
$message .= "Regards, \n" . get_option( 'blogname' );
wp_mail( $to, $subject, $message );
}
add_action( 'profile_update', 'user_profile_update', 10, 2 );
```
### Create New Custom Widget
```php
class New_Widget extends WP_Widget {
function __construct() {
parent::__construct(
'new_widget',
esc_html__( 'Widget', 'textdomain' )
);
}
private $widget_fields = array(
);
public function widget( $args, $instance ) {
echo $args['before_widget'];
if ( ! empty( $instance['title'] ) ) {
echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ) . $args['after_title'];
}
// Output generated fields
echo $args['after_widget'];
}
public function field_generator( $instance ) {
$output = '';
foreach ( $this->widget_fields as $widget_field ) {
$default = '';
if ( isset($widget_field['default']) ) {
$default = $widget_field['default'];
}
$widget_value = ! empty( $instance[$widget_field['id']] ) ? $instance[$widget_field['id']] : esc_html__( $default, 'textdomain' );
switch ( $widget_field['type'] ) {
default:
$output .= '
';
$output .= ''.esc_attr( $widget_field['label'], 'textdomain' ).': ';
$output .= '';
$output .= '
';
}
}
echo $output;
}
public function form( $instance ) {
$title = ! empty( $instance['title'] ) ? $instance['title'] : esc_html__( '', 'textdomain' );
?>
field_generator( $instance );
}
public function update( $new_instance, $old_instance ) {
$instance = array();
$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
foreach ( $this->widget_fields as $widget_field ) {
switch ( $widget_field['type'] ) {
default:
$instance[$widget_field['id']] = ( ! empty( $new_instance[$widget_field['id']] ) ) ? strip_tags( $new_instance[$widget_field['id']] ) : '';
}
}
return $instance;
}
}
function register_new_widget() {
register_widget( 'New_Widget' );
}
add_action( 'widgets_init', 'register_new_widget' );
```
## WooCommerce
### Change The Appearance Of A Foreign Currency In WooCommerce
```php
function wc_change_bgn_currency_symbol( $currency_symbol, $currency ) {
switch ( $currency ) {
case 'BGN':
$currency_symbol = 'BGN';
break;
}
return $currency_symbol;
}
add_filter( 'woocommerce_currency_symbol', 'wc_change_bgn_currency_symbol', 10, 2 );
```
### Create A Message For Remaining Amount Of A Purchase For Free Delivery In WooCommerce
```php
/**
* Notice with $$$ remaining to Free Shipping @ WooCommerce Cart
* Tested with WooCommerce version 3.0.5
*/
function wc_free_shipping_cart_notice() {
global $woocommerce;
// Get Free Shipping Methods for Rest of the World Zone & populate array $min_amounts
$default_zone = new WC_Shipping_Zone(0);
$default_methods = $default_zone->get_shipping_methods();
foreach( $default_methods as $key => $value ) {
if ( $value->id === "free_shipping" ) {
if ( $value->min_amount > 0 ) $min_amounts[] = $value->min_amount;
}
}
// Get Free Shipping Methods for all other ZONES & populate array $min_amounts
$delivery_zones = WC_Shipping_Zones::get_zones();
foreach ( $delivery_zones as $key => $delivery_zone ) {
foreach ( $delivery_zone['shipping_methods'] as $key => $value ) {
if ( $value->id === "free_shipping" ) {
if ( $value->min_amount > 0 ) $min_amounts[] = $value->min_amount;
}
}
}
// Find lowest min_amount
if ( is_array($min_amounts) ) {
$min_amount = min($min_amounts);
// Get Cart Subtotal inc. Tax excl. Shipping
$current = WC()->cart->subtotal;
// If Subtotal < Min Amount, еcho Notice and add "Continue Shopping" button
if ( $current < $min_amount ) {
$added_text = esc_html__('You need to add ', 'woocommerce' ) . wc_price( $min_amount - $current ) . esc_html__(' for free delivery!', 'woocommerce' );
$return_to = apply_filters( 'woocommerce_continue_shopping_redirect', wc_get_raw_referer() ? wp_validate_redirect( wc_get_raw_referer(), false ) : wc_get_page_permalink( '/' ) );
$notice = sprintf( '%s %s', esc_url( $return_to ), esc_html__( 'Continue shopping', 'woocommerce' ), $added_text );
wc_print_notice( $notice, 'notice' );
}
}
}
add_action( 'woocommerce_before_cart', 'wc_free_shipping_cart_notice' );
```
### Remove Specific Product Tabs In WooCommerce
```php
function wc_remove_product_tabs( $tabs ) {
// remove the description tab
unset( $tabs['description'] );
// remove the reviews tab
unset( $tabs['reviews'] );
// remove the additional information tab
unset( $tabs['additional_information'] );
return $tabs;
}
add_filter( 'woocommerce_product_tabs', 'wc_remove_product_tabs', 99 );
```
### Add A Message To The Login Or Registration Form In WooCommerce
```php
function wc_custom_login_message() {
if ( get_option( 'woocommerce_enable_myaccount_registration' ) == 'yes' ) {
$html = '
';
$html .= '' . _e( 'Your custom message goes here.' ) . '
';
$html .= '';
echo $html;
}
}
add_action( 'woocommerce_before_customer_login_form', 'wc_custom_login_message' );
```
### Display All Products Purchased By User Via Shortcode In WooCommerce
```php
add_shortcode( 'my_products', 'wc_user_products_bought' );
function wc_user_products_bought() {
global $product, $woocommerce, $woocommerce_loop;
$columns = 3;
// Get user
$current_user = wp_get_current_user();
// Get user orders (COMPLETED + PROCESSING)
$customer_orders = get_posts( array(
'numberposts' => -1,
'meta_key' => '_customer_user',
'meta_value' => $current_user->ID,
'post_type' => wc_get_order_types(),
'post_status' => array_keys( wc_get_is_paid_statuses() ),
) );
// Loop Through orders and get product IDs
if ( ! $customer_orders ) return;
$product_ids = array();
foreach ( $customer_orders as $customer_order ) {
$order = wc_get_order( $customer_order->ID );
$items = $order->get_items();
foreach ( $items as $item ) {
$product_id = $item->get_product_id();
$product_ids[] = $product_id;
}
}
$product_ids = array_unique( $product_ids );
// Query products
$args = array(
'post_type' => 'product',
'post__in' => $product_ids,
);
$loop = new WP_Query( $args );
// Generate WC loop
ob_start();
woocommerce_product_loop_start();
while ( $loop->have_posts() ) : $loop->the_post();
wc_get_template_part( 'content', 'product' );
endwhile;
woocommerce_product_loop_end();
woocommerce_reset_loop();
wp_reset_postdata();
// Return content
return '
' . ob_get_clean() . '';
}
```
### How To Add Custom Post Type To WooCommerce
**Step 1**
```php
/**
* Your post type should have a custom field called 'price'.
* We just have to make sure that its meta key is '_price'.
* How to check that? You can try to inspect the element:
* 1) Visit your post type admin page.
* 2) Try to add or edit a post in your post type admin page.
* 3) Look for the text box that has the price label and right click on the text box.
* 4) You should find it's name attribute to be '_price'.
* Usually the name is the meta key for a custom field.
*
* Add the code below if your meta key is not '_price'
*/
add_filter('woocommerce_get_price','wc_get_price', 20, 2);
function wc_get_price($price, $post) {
if ($post->post->post_type === 'post') {
$price = get_post_meta($post->id, 'price', true);
}
return $price;
}
```
**Step 2**
```php
/**
* You're now able to add a custom post type to the cart.
* Now we have to create our own "Add to Cart" button.
*/
add_filter('the_content', 'wc_add_to_cart_button', 20, 1);
function wc_add_to_cart_button($content) {
global $post;
if ($post->post_type !== 'post') {
return $content;
}
ob_start(); ?>
Premium WooCommerce Support
Welcome to the WooCommerce support area.
';
echo do_shortcode( ' /* your shortcode here */ ' );
}
/**
* @important-note "add_action" must follow 'woocommerce_account_{your-endpoint-slug}_endpoint' format
*/
add_action( 'woocommerce_account_premium-support_endpoint', 'woo_custom_premium_support_content' );
```
### How To Reorder A Custom Tab At My Account Page In WooCommerce
```php
/**
* Rename or re-order my account menu items
*/
function woo_reorder_my_account_menu() {
$neworder = array(
'dashboard' => __( 'Dashboard', 'woocommerce' ),
'orders' => __( 'Previous Orders', 'woocommerce' ),
'custom-tab' => __( 'Custom Tab', 'woocommerce' ),
'edit-address' => __( 'Addresses', 'woocommerce' ),
'edit-account' => __( 'Account Details', 'woocommerce' ),
'customer-logout' => __( 'Logout', 'woocommerce' ),
);
return $neworder;
}
add_filter ( 'woocommerce_account_menu_items', 'woo_reorder_my_account_menu' );
```
## Security
### Disable Theme Or Plugin Editor In WP Admin
```php
define( 'DISALLOW_FILE_EDIT', true );
```
**How to implement**
1. Locate the file **_wp-config.php_** in the base directory of your WordPress directory.
2. Open the file in a text editor.
3. Past the code above to the end of this file.
4. Save and close.
### Remove WordPress Version
```php
/**
* Remove WordPress version.
* Better to hide it and keep hackers in the dark.
*/
function remove_wp_version() {
return '';
}
add_filter( 'the_generator', 'remove_wp_version' );
```
## Other
### Default robots.txt For WordPress
```txt
User-Agent: *
Allow: /wp-content/uploads/
Disallow: /wp-content/plugins/
Disallow: /wp-content/themes/
Disallow: /readme.html
Disallow: /?s=
Disallow: /search/
Sitemap: http://www.sitename.com/post-sitemap.xml
Sitemap: http://www.sitename.com/page-sitemap.xml
```
**How to Implement:**
1. Create a file named **_robots.txt_**.
2. Copy and paste the snippet above to the file.
3. Switch the placeholder information with your unique address and save the file.
4. Drop the file in your root directory for your website.
### Simple .htaccess For WordPress
```txt
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress
```
**How to Implement:**
1. Backup your current **_.htaccess_** file.
2. Edit a copy of the file and delete the current information.
3. Copy and paste the snippet above to the file.
4. Save the file.
---
## License
This repository is unlicense[d], so feel free to fork.