Loads the translation data for the given script handle and text domain. Adds inline scripts required for the TinyMCE in the block editor. Parses blocks out of a content string, and renders those appropriate for the excerpt. Return whether a post type is compatible with the block editor. Returns all the categories for block types that will be shown in the block editor. Returns the object subtype for a given object ID of a specific type.
Erases personal data associated with an email address from the comments table. Returns the directory used to store personal data export files. Returns the URL of the directory used to store personal data export files.
Notify the site administrator via email when a request is confirmed. Returns the privacy policy link with formatting, when applicable. Send an email to the user with a link to the personal data export file. Mark erasure requests as completed after processing is finished.
Cleans up failed and expired requests before displaying the list table. Send an email to the old site admin email address when the site admin email address changes. Send a confirmation request email when a change of network admin email address is attempted. Send a referrer policy header so referrers are not sent externally from administration screens. Gets the list of file extensions that are editable in plugins. Gets the list of file extensions that are editable for a given theme.
Determines whether the current request is a WordPress cron request. Determines whether the current request is a WordPress Ajax request. Checks whether the custom header video is eligible to show on the current page.
Checks the post excerpt and prepare it for single post output. Prepares a single comment to be inserted into the database. Sanitizes a multiline string from user input or from the database.
Parse arguments passed to the term query with default query parameters. Retrieves network data given a network ID or network object. Attempts to raise the PHP memory limit for memory intensive processes. Marks a deprecated action or filter hook as deprecated and throws a notice. Retrieves the list of common file extensions and their types. Used internally to get a list of site IDs matching the query vars. Displays a categories drop-down for filtering on the Posts list table.
Prints the necessary markup for the site title in an embed template. Retrieves the maximum character lengths for the comment form fields. Renders the template partial involving the associated settings. Handles the Ajax request to return the rendered partials for the requested placements. Retrieve the closest matching network for a domain and path. Creates, stores, then returns a password reset key for user. Returns an array of single-use query variable names that can be removed from a URL.
Handles the submission of a comment, usually posted to wp-comments-post. Send a comment moderation notification to the comment moderator. Updates the value of a network option that was already added. Retrieves a list of reserved site on a sub-directory Multisite installation. Marks a constructor as deprecated and informs when it has been used. Adds additional sizes to be made when creating the site icon images.
Adds Site Icon sizes to the array of image sizes on demand. Get the query variables for the current attachments request. Identify an existing table alias that is compatible with the current query clause. Check whether panel is active to current Customizer preview. Retrieves the description for an author, post type, or term archive. Check whether section is active to current Customizer preview. Generates a session token and attaches session information to it. Check whether control is active to current Customizer preview.
Displays the language string for the number of comments the current post has. Override parent views so we can use the filter bar display. Shows a form for a visitor to sign up for a new user account. Shows a form for a user or visitor to sign up for a new site. Kicks off the background update process, looping through all pending updates.
Sends an email upon the completion or failure of a background core update. Asynchronously upgrades language packs after other upgrades have been made. Determines if this WordPress Core version should update to an offered version or not. Retrieves theme installer pages from the WordPress. This was once used to create a thumbnail from an Image given a maximum side size. Gets a list of all, hidden, and sortable columns, with filter applied.
Displays a dropdown for filtering items in the list table by month. Send a confirmation request email when a change of site admin email address is attempted. Send a confirmation request email when a change of user email address is attempted. Inserts an array of strings into a file. Saves option for number of rows when listing posts, pages, comments, etc.
Get comma-separated list of terms available to edit for the given post ID. Generate attachment meta data and create image sub-sizes for images.
Validate that file is suitable for displaying within a web page. Retrieves plugin installer pages from the WordPress. Dashboard widget that displays some basic stats about the site. Notifies the site admin that the installation of WordPress is complete. Fetch a filtered list of user roles that the current user is allowed to edit. Improve this question. Add a comment. Active Oldest Votes.
Improve this answer. If I understand correctly. You have to change the value in your callback. You can also return it unchanged if you want — depending on context. Oh, yeah. What are Filters? Hooking into a Filter In order to let users change some specific data a value, the output of a function etc. A More Complex Filter If you want to filter only a certain post , you can use the extra information in case of this filter: the ID. What Parameters Do I Have?
WordPress offers filter hooks to allow plugins to modify various types of internal data at runtime. A plugin can modify data by binding a callback to a filter hook. When the filter is later applied, each bound callback is run in order of priority, and given the opportunity to modify a value by returning a new value. If no arguments were accepted by the callback that is considered to be the same as accepting 1 argument. For example:. It is up to you to take care.
This is done for optimization purposes, so everything is as quick as possible. Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the filter. Function responsible for enqueuing the styles required for block styles functionality on the editor and on the frontend. My searching of the last 3 months is finally over and now I can get on with Object orientated PHP and really do something with the help of jQuery with WordPress.
Thanks again, even my wife is relieved that I have stopped ranting about useless info when I do Google searches on hooks. I am in your debt, now maybe even my hair may grow back! Great article. It is always good reading your posts because they are easy to read and understand. Thank you. Search for:. Watching the videos was like a bunch of lights being turned on.
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