WordPress.org

General Functions

functions.php:

• profile
• time/date
  • current_time
• options
  • add_option
  • delete_option -- removes row of given option name from the options database table.
  • form_option -- does a get_settings on given string and returns info for an option. Before calling get_settings, the indata is passed through htmlspecialchars().
  • get_alloptions - no parameters
  • get_settings (alias: get_option)
  • update_option -- given option name and new value, it makes a safe update of given option's database row.
• meta
• trackpack/ping
• xmlrpc
• filters
• actions
• is_single,page,archive,time/data
• themes/templates
• htmlentities2
• cookies
• plugins
• mail (pop) access

complete list

Formatting Functions

This list is incomplete, please contribute.

• wptexturize( $text )
• clean_pre( $text ) - Returns the text without BR tags, and with P tags turned into line-breaks
• wpautop( $pee, $br = 1 ) - Returns the text with HTML formatting for paragraphs
• seems_utf8($Str) - Returns true if given string seems like it is UTF8-encoded
• wp_specialchars( $text, $quotes = 0 ) - Like the PHP function htmlspecialchars except it doesn't double-encode HTML entities
• remove_accents($string) - Returns a string with accents or umlauts without these
• sanitize_user( $username, $strict = false ) - Makes the username more machine-readable. Strict option for pure ASCII only.
• sanitize_title($title, $fallback_title = )
• sanitize_title_with_dashes($title)
• convert_chars($content, $flag = 'obsolete') - Translation of invalid Unicode references range to valid range
• balanceTags($text, $is_comment = 0) - Balances Tags of string using a modified stack. Can be disabled by configuration.
• zeroise($number,$threshold) - Adds leading zeros when necessary
• ent2ncr($text) - Returns HTML entity as its number representation.

Post Functions

• get_post - get information on a specific post
• get_cat_name($cat_id) - get category name for given ID
• get_cat_ID($cat_name='General') - get category ID for given category name
• get_author_name( $auth_id ) - get author's preferred display name
• get_post_mime_type($ID = "") - takes a post ID, returns its MIME type
• wp_insert_post($postarr=array()) - A generic function for inserting data into the post table
• wp_update_post($postarr=array()) - A generic function to update data in the post table
• wp_publish_post($post_id) - Set a post's post_status to 'publish'ed. Calls wp_update_post.
• wp_delete_post($postid) - A generic function to delete a post in the post table

Comment Functions

• get_approved_comments

Feed Functions

• is_feed -- returns a Boolean, true if the current context is within a feed (wrapper for $WP_Query->is_feed)
• fetch_rss -- retrieve an RSS feed from a URL with automatic caching (included in rss_functions.php)
• wp_rss -- retrieve and display an RSS feed as an unordered list (included in rss_functions.php)
• get_rss -- retrieve and display an RSS feed as a list (ordering optional) (included in rss_functions.php)

Link Functions

get_category_link

Administration Functions

• insert_with_markers -- Writes a string (e.g. rewrite rules for the .htaccess file) to a given file namne between two markers, BEGIN and END.
• Please Contribute more...

Classes

WordPress classes

• Object Cache
• wpdb - Database Interface
• WP_Query - Request parsing and manipulation, posts fetching
• WP_Rewrite - Rewrite rules
• retrospam_mgr - Spam management
• WP - general request handling (in Version 1.6)
• Capabilities Classes (WP_Roles, WP_Role, WP_User) (in Version 2.0)

External classes

• IXR - XML-RPC Classes
• Snoopy - HTTP client
• gettext_reader (part of PHP-gettext) - Localization Class
• RSS Classes (Magpie and RSSCache)

User Functions

• get_currentuserinfo — get information on the current user
• get_userdata — get information on any user
• get_usernumposts — get post count for a specific user
• get_usermeta — get meta data for a specific user
• wp_create_user — Create a user and add it to the user database.