Cara menggunakan wordpress functions tutorial

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Table of Contents Show

Functions by category
Post, Custom Post Type, Page, Attachment and Bookmarks Functions
Category, Tag and Taxonomy Functions
Feed Functions
HTTP API Functions
Comment, Ping, and Trackback Functions
Action, Filter, and Plugin Functions
Theme-Related Functions
Formatting Functions
Miscellaneous Functions
Multisite functions
Official and Unofficial References

1 Functions by category
- 1.1 Post, Custom Post Type, Page, Attachment and Bookmarks Functions
- 1.2 Category, Tag and Taxonomy Functions
- 1.3 User and Author Functions
- 1.4 Feed Functions
- 1.5 HTTP API Functions
- 1.6 Comment, Ping, and Trackback Functions
- 1.7 Action, Filter, and Plugin Functions
- 1.8 Theme-Related Functions
- 1.9 Formatting Functions
- 1.10 Miscellaneous Functions
- 1.11 Multisite functions
2 Official and Unofficial References

The files of WordPress define many useful PHP functions. Some of the functions, known as Template Tags, are defined especially for use in WordPress Themes. There are also some functions related to actions and filters (the Plugin API), which are therefore used primarily for developing Plugins. The rest are used to create the core WordPress functionality.

Many of the core WordPress functions are useful to Plugin and Theme developers. So, this article lists most of the core functions, excluding Template Tags. At the bottom of the page, there is a section listing other resources for finding information about WordPress functions. In addition to this information, the WordPress Code Reference site details all the WordPress functions by version since 2.6.1.

You can help make this page more complete!

Here are some things you can do to help:

Add documentation to un-documented functions, by creating sub-pages or at least by adding short comments in the lists below. If you create a subpage for a function, please include information and examples of usage of that function, if possible, per the examples found in Template Tags.
List more functions here, following the category structure.
Correct errors by moving functions to better categories where appropriate, and of course fixing typos. Note: that it is OK for a function to appear in more than one category.

Read Contributing to WordPress to find out more about how you can contribute to the effort!

Functions by category

Post, Custom Post Type, Page, Attachment and Bookmarks Functions

Posts

get_adjacent_post
get_boundary_post
get_children
get_extended
get_next_post
get_next_posts_link
next_posts_link
get_permalink
the_permalink
get_the_excerpt
the_excerpt
get_the_post_thumbnail
get_post
get_post_field
get_post_ancestors
get_post_mime_type
get_post_status
get_post_format
set_post_format
get_edit_post_link
get_delete_post_link
get_previous_post
get_previous_posts_link
previous_posts_link
get_posts
have_posts
is_post (deprecated)
is_single
is_sticky
get_the_ID
the_ID
the_post
wp_get_recent_posts
wp_get_single_post (deprecated)
has_post_thumbnail
has_excerpt
has_post_format

Custom Post Status

register_post_status

Custom Post Type

register_post_type
is_post_type_archive
post_type_archive_title
add_post_type_support
remove_post_type_support
post_type_supports
set_post_type
post_type_exists
get_post_type
get_post_types
get_post_type_archive_link
get_post_type_object
get_post_type_capabilities
get_post_type_labels
is_post_type_hierarchical

Post insertion/removal

wp_delete_post
wp_insert_post
wp_publish_post
wp_trash_post
wp_update_post

Pages

get_all_page_ids
get_ancestors
get_page (deprecated)
get_page_link
get_page_by_path
get_page_by_title
get_page_children
get_page_hierarchy
get_page_uri
get_pages
is_page
page_uri_index (method of class WP_Rewrite)
wp_link_pages
wp_list_pages
wp_page_menu
wp_dropdown_pages

Custom Fields (postmeta)

add_post_meta
delete_post_meta
get_post_custom
get_post_custom_keys
get_post_custom_values
get_post_meta
update_post_meta
register_meta

Attachments

get_attached_file
image_resize (deprecated)
image_edit_before_change (ported to WP_Image_Editor object)
is_attachment
is_local_attachment
set_post_thumbnail
update_attached_file
wp_attachment_is_image
wp_create_thumbnail (deprecated)
wp_insert_attachment
wp_delete_attachment
wp_get_attachment_image
wp_get_attachment_link
wp_get_attachment_image_src
wp_get_attachment_metadata
wp_get_attachment_thumb_file
wp_get_attachment_thumb_url
wp_get_attachment_url
wp_check_for_changed_slugs
wp_count_posts
wp_get_mime_types
wp_mime_type_icon
wp_generate_attachment_metadata
wp_prepare_attachment_for_js
wp_update_attachment_metadata

Bookmarks

get_bookmark
get_bookmarks
wp_list_bookmarks

Terms

wp_get_post_categories
wp_set_post_categories
wp_get_post_tags
wp_set_post_tags
wp_get_post_terms
wp_set_post_terms
wp_count_terms
has_term
is_object_in_term

Others

add_meta_box
remove_meta_box
get_the_ID
the_ID
get_the_author
the_author
get_the_author_posts
get_the_content
the_content
get_the_title
the_title
the_title_attribute
wp_trim_excerpt
wp_get_post_revision
wp_get_post_revisions
wp_is_post_revision
paginate_links

Category, Tag and Taxonomy Functions

Categories

cat_is_ancestor_of
get_all_category_ids (deprecated)
get_ancestors
get_cat_ID
get_cat_name
get_categories
get_category
get_category_by_path
get_category_by_slug
get_the_category_by_ID
get_the_category_list
get_category_link
get_category_parents
get_the_category
single_cat_title
in_category
is_category
the_category
wp_category_checklist
wp_dropdown_categories
wp_list_categories

Category Creation

wp_create_category
wp_delete_category
wp_insert_category

Tags

get_tag
get_tag_link
get_tags
get_the_tag_list
get_the_tags
has_tag
is_tag
the_tags
single_tag_title
tag_description
wp_generate_tag_cloud
wp_tag_cloud

Taxonomy

get_object_taxonomies
get_edit_term_link
get_taxonomy
get_taxonomies
get_term
get_the_term_list
get_term_by
the_terms
get_the_terms
get_term_children
get_term_link
get_terms
is_taxonomy (deprecated)
is_tax
is_taxonomy_hierarchical
is_term (deprecated)
taxonomy_exists
term_exists
register_taxonomy
register_taxonomy_for_object_type
wp_get_object_terms
wp_remove_object_terms
wp_set_object_terms
wp_insert_term
wp_update_term
wp_delete_term
wp_terms_checklist

Admins, Roles and Capabilities

add_cap
add_role
author_can
current_user_can
current_user_can_for_blog
get_role
get_super_admins
is_super_admin
map_meta_cap
remove_cap
remove_role
user_can

Users and Authors

auth_redirect
count_users
count_user_posts
count_many_users_posts
email_exists
get_currentuserinfo
get_current_user_id
get_profile (deprecated)
get_user_by
get_userdata
get_usernumposts (deprecated)
get_users
set_current_user (deprecated)
user_pass_ok (deprecated)
wp_authenticate
username_exists
validate_username
wp_dropdown_users
wp_get_current_user
wp_set_current_user
wp_set_password
get_author_posts_url
get_the_modified_author
is_multi_author

User meta

add_user_meta
delete_user_meta
get_user_meta
update_user_meta
get_the_author_meta

User insertion/removal

wp_create_user
wp_delete_user
wp_insert_user
wp_update_user

Login / Logout

is_user_logged_in
wp_login_form
wp_signon
wp_logout
wp_loginout
wp_logout_url

Feed Functions

bloginfo_rss
comment_author_rss
comment_link
comment_text_rss
do_feed
do_feed_atom
do_feed_rdf
do_feed_rss
do_feed_rss2
fetch_feed
fetch_rss (deprecated)
get_author_feed_link
get_bloginfo_rss
get_category_feed_link
get_comment_link
get_comment_author_rss
get_post_comments_feed_link
get_rss (deprecated)
get_search_comments_feed_link
get_search_feed_link
get_the_category_rss
get_the_title_rss
permalink_single_rss (deprecated)
post_comments_feed_link
rss_enclosure
the_title_rss
the_category_rss
the_content_rss (deprecated)
the_excerpt_rss
wp_rss (deprecated)

HTTP API Functions
wp_remote_get wp_remote_retrieve_body wp_get_http_headers wp_remote_fopen

Comment, Ping, and Trackback Functions

add_ping
add_comment_meta
check_comment
comment_text
comment_form
comments_number
discover_pingback_server_uri
delete_comment_meta
do_all_pings
do_enclose
do_trackbacks
generic_ping
get_approved_comments
get_avatar
get_comment
get_comment_text
get_comment_meta
get_comments
wp_list_comments
get_enclosed
get_lastcommentmodified
get_pung
get_to_ping
have_comments
get_comment_author
is_trackback
pingback
privacy_ping_filter
sanitize_comment_cookies
trackback
trackback_url
trackback_url_list
update_comment_meta
weblog_ping
wp_allow_comment
wp_count_comments
wp_delete_comment
wp_filter_comment
wp_get_comment_status
wp_get_current_commenter
wp_insert_comment
wp_new_comment
wp_set_comment_status
wp_throttle_comment_flood
wp_update_comment
wp_update_comment_count
wp_update_comment_count_now

Comments Loop

comment_class
comment_ID
comment_author
comment_date
comment_time
get_comment_date
get_comment_time

Comments Pagination

paginate_comments_links
previous_comments_link
next_comments_link
get_comment_pages_count

Action, Filter, and Plugin Functions

Filters (Reference)

has_filter
add_filter
apply_filters
apply_filters_ref_array
current_filter
merge_filters
remove_filter
remove_all_filters

Actions (Reference)

has_action
add_action
do_action
do_action_ref_array
did_action
remove_action
remove_all_actions

Plugins (Reference)

plugin_basename
plugins_url
get_plugin_data
get_admin_page_title
plugin_dir_path
register_activation_hook
register_deactivation_hook
menu_page_url
is_plugin_active
is_plugin_active_for_network
is_plugin_inactive
is_plugin_page
add_contextual_help (deprecated)
get_plugins

Widgets (Reference)

is_active_widget
register_widget
the_widget
unregister_widget
wp_add_dashboard_widget
wp_convert_widget_settings
wp_get_sidebars_widgets
wp_get_widget_defaults
wp_register_sidebar_widget
wp_register_widget_control
wp_set_sidebars_widgets
wp_unregister_sidebar_widget
wp_unregister_widget_control
wp_widget_description

Settings (Reference)

register_setting
unregister_setting
settings_fields
do_settings_fields
do_settings_sections
add_settings_field
add_settings_section
add_settings_error
get_settings_errors
settings_errors

Shortcodes (Reference)

add_shortcode
do_shortcode
do_shortcode_tag
get_shortcode_regex
remove_shortcode
remove_all_shortcodes
shortcode_atts
shortcode_parse_atts
strip_shortcodes

Include functions

comments_template
get_footer
get_header
get_sidebar
get_search_form

Other functions

add_custom_background (deprecated)
add_custom_image_header (deprecated)
add_image_size
add_theme_support
body_class
current_theme_supports
dynamic_sidebar
get_404_template
get_archive_template
get_attachment_template
get_author_template
get_body_class
get_category_template
get_comments_popup_template
get_current_theme
get_date_template
get_header_image
get_header_textcolor
get_home_template
get_locale_stylesheet_uri
get_page_template
get_paged_template
get_post_class
get_query_template
get_search_template
get_single_template
get_stylesheet
get_stylesheet_directory
get_stylesheet_directory_uri
get_stylesheet_uri
get_tag_template
get_taxonomy_template
get_template
get_template_directory
get_template_directory_uri
get_theme_file_uri
get_theme_file_path
get_template_part
get_theme (deprecated)
wp_get_themes
get_theme_data (deprecated)
get_theme_support
get_theme_mod
get_theme_mods
get_theme_root
get_theme_roots
get_theme_root_uri
get_themes (deprecated)
has_header_image
header_image
header_textcolor
in_the_loop
is_child_theme
is_active_sidebar
is_admin_bar_showing
is_customize_preview
is_dynamic_sidebar
language_attributes
load_template
locale_stylesheet
locate_template
post_class
preview_theme
preview_theme_ob_filter
preview_theme_ob_filter_callback
register_nav_menu
register_nav_menus
get_registered_nav_menus
wp_create_nav_menu
register_sidebar
register_sidebars
register_theme_directory
remove_theme_mod
remove_theme_mods
remove_theme_support
require_if_theme_supports
search_theme_directories
set_theme_mod
switch_theme
validate_current_theme
unregister_nav_menu
unregister_sidebar
wp_add_inline_style
wp_clean_themes_cache
wp_get_archives
wp_get_nav_menu_items
wp_get_theme
wp_nav_menu
wp_oembed_remove_provider
wp_page_menu
wp_title

Formatting Functions

absint
add_magic_quotes
addslashes_gpc
antispambot
attribute_escape (deprecated)
backslashit
balanceTags
clean_pre
clean_url (deprecated)
convert_chars
convert_smilies
ent2ncr
esc_attr
esc_html
esc_js
esc_textarea
esc_sql
esc_url
esc_url_raw
force_balance_tags
format_to_edit
format_to_post (deprecated)
funky_javascript_fix (deprecated)
htmlentities2
is_email
js_escape (deprecated)
make_clickable
popuplinks
remove_accents
sanitize_email
sanitize_file_name
sanitize_html_class
sanitize_key
sanitize_mime_type
sanitize_option
sanitize_sql_orderby
sanitize_text_field
sanitize_title
sanitize_title_for_query
sanitize_title_with_dashes
sanitize_user
seems_utf8
stripslashes_deep
trailingslashit
untrailingslashit
urlencode_deep
url_shorten
utf8_uri_encode
wpautop
wptexturize
wp_filter_kses
wp_filter_post_kses
wp_filter_nohtml_kses
wp_iso_descrambler
wp_kses
wp_kses_array_lc
wp_kses_attr
wp_kses_bad_protocol
wp_kses_bad_protocol_once
wp_kses_bad_protocol_once2
wp_kses_check_attr_val
wp_kses_decode_entities
wp_kses_hair
wp_kses_hook
wp_kses_html_error
wp_kses_js_entities
wp_kses_no_null
wp_kses_normalize_entities
wp_kses_normalize_entities2
wp_kses_post
wp_kses_split
wp_kses_split2
wp_kses_stripslashes
wp_kses_version
wp_make_link_relative
wp_normalize_path
wp_rel_nofollow
wp_richedit_pre
wp_specialchars
wp_trim_words
zeroise

Miscellaneous Functions

Time/Date Functions

current_time
date_i18n
get_calendar
get_date_from_gmt
get_lastpostdate
get_lastpostmodified
get_day_link
get_gmt_from_date
get_month_link
the_date
get_the_date
the_time
get_the_time
the_modified_time
get_the_modified_time
get_weekstartend
get_year_link
human_time_diff
is_new_day
iso8601_timezone_to_offset
iso8601_to_datetime
mysql2date

Serialization

is_serialized
is_serialized_string
maybe_serialize
maybe_unserialize

Options

add_option
add_site_option
delete_option
delete_site_option
form_option
get_alloptions (deprecated)
get_site_option
get_site_url
get_admin_url
get_user_option
get_option
update_option
update_site_option
update_user_option
wp_load_alloptions

Transients

set_transient()
get_transient()
delete_transient()
set_site_transient()
get_site_transient()
delete_site_transient()

Admin Menu Functions

add_menu_page
remove_menu_page
add_submenu_page
remove_submenu_page
add_object_page
add_utility_page
add_comments_page
add_dashboard_page
add_links_page
add_management_page
add_media_page
add_options_page
add_pages_page
add_plugins_page
add_posts_page
add_theme_page
add_users_page

Toolbar Functions

add_node
remove_node
add_group
get_node
get_nodes

Form Helpers

checked
disabled
selected
submit_button
get_submit_button

Nonces and Referers (Security)

check_admin_referer
check_ajax_referer
wp_create_nonce
wp_explain_nonce (deprecated)
wp_get_original_referer
wp_get_referer
wp_nonce_ays
wp_nonce_field
wp_nonce_url
wp_original_referer_field
wp_referer_field
wp_send_json
wp_send_json_error
wp_send_json_success
wp_verify_nonce

XMLRPC

xmlrpc_getpostcategory
xmlrpc_getposttitle
xmlrpc_removepostdata
user_pass_ok (deprecated)

Localization

__
_x
_n
_nx
_e
_ex
_ngettext (deprecated)
esc_attr__
esc_attr_e
esc_html__
esc_html_e
get_locale
load_default_textdomain
load_plugin_textdomain
load_muplugin_textdomain
load_textdomain
load_theme_textdomain
is_rtl

Cron (Scheduling)

spawn_cron
wp_clear_scheduled_hook
wp_cron
wp_get_schedule
wp_get_schedules
wp_next_scheduled
wp_reschedule_event
wp_schedule_event
wp_schedule_single_event
wp_unschedule_event

Conditional Tags Index

comments_open
has_nav_menu
has_tag
in_category
is_404
is_admin
is_archive
is_attachment
is_author
is_category
is_comments_popup
is_customize_preview
is_date
is_day
is_feed
is_front_page
is_home
is_month
is_page
is_page_template
is_paged
is_preview
is_search
is_single
is_singular
is_sticky
is_tag
is_tax
is_time
is_trackback
is_year
pings_open

Script and Style Registration

wp_dequeue_script
wp_dequeue_style
wp_deregister_script
wp_deregister_style
wp_enqueue_script
wp_enqueue_style
wp_localize_script
wp_register_script
wp_register_style
wp_script_is
wp_style_is

sql

get_tax_sql
get_meta_sql
get_posts_by_author_sql

Miscellaneous

add_editor_style
add_query_arg
add_rewrite_rule
admin_url
bool_from_yn
cache_javascript_headers
capital_P_dangit
clean_blog_cache
content_url
do_robots
flush_rewrite_rules
get_bloginfo
get_num_queries
get_post_stati
get_post_statuses
get_query_var
home_url
includes_url
is_blog_installed
is_main_site
is_main_query
is_multisite
is_ssl
is_wp_error
log_app
make_url_footnote (deprecated)
network_admin_url
network_home_url
network_site_url
nocache_headers
plugin_dir_url
query_posts
remove_query_arg
rewind_posts
setup_postdata
site_url
status_header
unzip_file
validate_file
validate_file_to_edit
wp
wp_cache_set
wp_cache_get
wp_cache_reset (deprecated)
wp_check_filetype
wp_clearcookie (deprecated)
wp_die
wp_editor
wp_footer
wp_get_cookie_login (deprecated)
wp_get_image_editor
wp_get_installed_translations
wp_hash
wp_handle_sideload
wp_head
wp_install_defaults
wp_is_mobile
wp_mail
wp_mkdir_p
wp_new_user_notification
wp_password_change_notification
wp_notify_moderator
wp_notify_postauthor
wp_parse_args
wp_redirect
wp_reset_postdata
wp_reset_query
wp_salt
wp_safe_redirect
wp_set_auth_cookie
wp_strip_all_tags
wp_upload_bits
wp_upload_dir
wp_list_pluck
wp_text_diff
post_submit_meta_box
wp_max_upload_size

Multisite functions

As of v3.0, WordPress includes WPMU functionality. Old WPMU functions reference can be found at http://codex.wordpress.org/WPMU_Functions (deprecated page).

Multisite administration Functions

confirm_delete_users
is_user_member_of_blog
wp_dashboard_quota

These functions are found in file wp-admin/includes/ms.php (since 3.0.0).

admin_notice_feed (deprecated)
avoid_blog_page_permalink_collision
check_import_new_users
check_upload_size
choose_primary_blog
display_space_usage
fix_import_form_size
format_code_lang
get_site_allowed_themes (deprecated)
grant_super_admin
ms_deprecated_blogs_file (deprecated)
mu_dropdown_languages
new_user_email_admin_notice
redirect_user_to_blog (deprecated)
refresh_user_details
revoke_super_admin
secret_salt_warning
send_confirmation_on_profile_email
show_post_thumbnail_warning (deprecated)
site_admin_notice
sync_category_tag_slugs
update_option_new_admin_email
update_user_status
upload_is_user_over_quote
upload_space_setting
wpmu_delete_blog
wpmu_delete_user
wpmu_get_blog_allowedthemes (deprecated)
_admin_notice_multisite_activate_plugins_page (deprecated)

Multisite Functions

Site/blog functions that work with the blogs table and related data, found in file wp-includes/ms-blogs.php (since 3.0.0).

add_blog_option
delete_blog_option
get_blogaddress_by_domain
get_blogaddress_by_id
get_blogaddress_by_name
get_blog_details
get_blog_option
get_blog_status
get_id_from_blogname
get_last_updated
is_archived
refresh_blog_details
restore_current_blog
switch_to_blog
update_archived
update_blog_details
update_blog_option
update_blog_status
wpmu_update_blogs_date

Defines constants and global variables that can be overridden, generally in wp-config.php, found in file wp-includes/ms-default-constants.php (since 3.0.0).

ms_cookie_constants
ms_file_constants
ms_subdomain_constants
ms_upload_constants

Multisite WordPress API, found in file wp-includes/ms-functions.php (since 3.0.0).

add_existing_user_to_blog
add_new_user_to_blog
add_user_to_blog
check_upload_mimes
create_empty_blog
domain_exists
filter_SSL
fix_phpmailer_messageid
force_ssl_content
get_active_blog_for_user
get_admin_users_for_domain
get_blogs_of_user
get_blog_count
get_blog_id_from_url
get_blog_permalink
get_blog_post
get_current_site
get_dashboard_blog
get_dirsize
get_most_recent_post_of_user
get_sitestats
get_space_allowed
get_space_used
get_upload_space_available
get_user_count
get_user_id_from_string (deprecated)
global_terms
insert_blog
install_blog
install_blog_defaults
is_blog_user (deprecated)
is_email_address_unsafe
is_upload_space_available
is_user_option_local
is_user_spammy
maybe_add_existing_user_to_blog
maybe_redirect_404
newblog_notify_siteadmin
newuser_notify_siteadmin
recurse_dirsize
redirect_mu_dashboard (not a function??)
redirect_this_site
remove_user_from_blog
signup_nonce_check
signup_nonce_fields
update_blog_public
update_posts_count
upload_is_file_too_big
upload_is_user_over_quota
upload_size_limit_filter
users_can_register_signup_filter
welcome_user_msg_filter
wordpressmu_wp_mail_from (not a function??)
wp_get_sites
wpmu_activate_signup
wpmu_admin_redirect_add_updated_param (deprecated)
wpmu_create_blog
wpmu_create_user
wpmu_log_new_registrations
wpmu_signup_blog
wpmu_signup_blog_notification
wpmu_signup_user
wpmu_signup_user_notification
wpmu_validate_blog_signup
wpmu_validate_user_signup
wpmu_welcome_notification
wpmu_welcome_user_notification

These functions are needed to load Multisite, found in file wp-includes/ms-load.php (since 3.0.0).

get_current_site_name (deprecated)
is_subdomain_install
ms_not_installed
ms_site_check
wpmu_current_site (deprecated)

Official and Unofficial References

Trac Browser - WordPress source code. Choose 'Tags' to find a specific version source code, or 'Trunk' to see the latest version source code.
PHPXref for WordPress - Cross reference of WordPress files, functions, and variables, which seems to point to the latest released version.
WordPress Function History Table for 3.0 and prior - List each WordPress function with including the version it was introduced in or dropped in. PlanetOzh recommends: "see related WordPress Functions Implementation History Tool for more information (and for a more usable tool)"
Page not found-- WordPress Variable Report - A list of WordPress functions, listing what version of PHP every function requires (and if there's a compatible function available), what varables/arguments in functions are unused, and what functions/variables each class contains (and their default values).
WordPress Hooks Table - A list of WordPress actions and filters, cross-referenced to the files they are in