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PHP Cross Reference of WordPress |
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These functions can be replaced via plugins. If plugins do not redefine these functions, then these will be used instead.
| File Size: | 2966 lines (108 kb) |
| Included or required: | 6 times |
| Referenced: | 0 times |
| Includes or requires: | 5 files wp-includes/class-phpass.php wp-includes/wp-diff.php wp-includes/PHPMailer/Exception.php wp-includes/PHPMailer/SMTP.php wp-includes/PHPMailer/PHPMailer.php |
| wp_set_current_user( $id, $name = '' ) X-Ref |
| Changes the current user by ID or name. Set $id to null and specify a name if you do not know a user's ID. Some WordPress functionality is based on the current user and not based on the signed in user. Therefore, it opens the ability to edit and perform actions on users who aren't signed in. param: int|null $id User ID. param: string $name User's username. return: WP_User Current user User object. since: 2.0.3 |
| wp_get_current_user() X-Ref |
| Retrieve the current user object. Will set the current user, if the current user is not set. The current user will be set to the logged-in person. If no user is logged-in, then it will set the current user to 0, which is invalid and won't have any permissions. return: WP_User Current WP_User instance. since: 2.0.3 |
| get_userdata( $user_id ) X-Ref |
| Retrieve user info by user ID. param: int $user_id User ID return: WP_User|false WP_User object on success, false on failure. since: 0.71 |
| get_user_by( $field, $value ) X-Ref |
| Retrieve user info by a given field param: string $field The field to retrieve the user with. id | ID | slug | email | login. param: int|string $value A value for $field. A user ID, slug, email address, or login name. return: WP_User|false WP_User object on success, false on failure. since: 2.8.0 since: 4.4.0 Added 'ID' as an alias of 'id' for the `$field` parameter. since: 5.8.0 Returns the global `$current_user` if it's the user being fetched. |
| cache_users( $user_ids ) X-Ref |
| Retrieve info for user lists to prevent multiple queries by get_userdata() param: int[] $user_ids User ID numbers list since: 3.0.0 |
| wp_mail( $to, $subject, $message, $headers = '', $attachments = array() X-Ref |
| Sends an email, similar to PHP's mail function. A true return value does not automatically mean that the user received the email successfully. It just only means that the method used was able to process the request without any errors. The default content type is `text/plain` which does not allow using HTML. However, you can set the content type of the email by using the {@see 'wp_mail_content_type'} filter. The default charset is based on the charset used on the blog. The charset can be set using the {@see 'wp_mail_charset'} filter. param: string|string[] $to Array or comma-separated list of email addresses to send message. param: string $subject Email subject. param: string $message Message contents. param: string|string[] $headers Optional. Additional headers. param: string|string[] $attachments Optional. Paths to files to attach. return: bool Whether the email was sent successfully. since: 1.2.1 since: 5.5.0 is_email() is used for email validation, |
| wp_authenticate( $username, $password ) X-Ref |
| Authenticate a user, confirming the login credentials are valid. param: string $username User's username or email address. param: string $password User's password. return: WP_User|WP_Error WP_User object if the credentials are valid, since: 2.5.0 since: 4.5.0 `$username` now accepts an email address. |
| wp_logout() X-Ref |
| Log the current user out. since: 2.5.0 |
| wp_validate_auth_cookie( $cookie = '', $scheme = '' ) X-Ref |
| Validates authentication cookie. The checks include making sure that the authentication cookie is set and pulling in the contents (if $cookie is not used). Makes sure the cookie is not expired. Verifies the hash in cookie is what is should be and compares the two. param: string $cookie Optional. If used, will validate contents instead of cookie's. param: string $scheme Optional. The cookie scheme to use: 'auth', 'secure_auth', or 'logged_in'. return: int|false User ID if valid cookie, false if invalid. since: 2.5.0 |
| wp_generate_auth_cookie( $user_id, $expiration, $scheme = 'auth', $token = '' ) X-Ref |
| Generates authentication cookie contents. param: int $user_id User ID. param: int $expiration The time the cookie expires as a UNIX timestamp. param: string $scheme Optional. The cookie scheme to use: 'auth', 'secure_auth', or 'logged_in'. param: string $token User's session token to use for this cookie. return: string Authentication cookie contents. Empty string if user does not exist. since: 2.5.0 since: 4.0.0 The `$token` parameter was added. |
| wp_parse_auth_cookie( $cookie = '', $scheme = '' ) X-Ref |
| Parses a cookie into its components. param: string $cookie Authentication cookie. param: string $scheme Optional. The cookie scheme to use: 'auth', 'secure_auth', or 'logged_in'. return: string[]|false { since: 2.7.0 |
| wp_set_auth_cookie( $user_id, $remember = false, $secure = '', $token = '' ) X-Ref |
| Sets the authentication cookies based on user ID. The $remember parameter increases the time that the cookie will be kept. The default the cookie is kept without remembering is two days. When $remember is set, the cookies will be kept for 14 days or two weeks. param: int $user_id User ID. param: bool $remember Whether to remember the user. param: bool|string $secure Whether the auth cookie should only be sent over HTTPS. Default is an empty param: string $token Optional. User's session token to use for this cookie. since: 2.5.0 since: 4.3.0 Added the `$token` parameter. |
| wp_clear_auth_cookie() X-Ref |
| Removes all of the cookies associated with authentication. since: 2.5.0 |
| is_user_logged_in() X-Ref |
| Determines whether the current visitor is a logged in user. For more information on this and similar theme functions, check out the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ Conditional Tags} article in the Theme Developer Handbook. return: bool True if user is logged in, false if not logged in. since: 2.0.0 |
| auth_redirect() X-Ref |
| Checks if a user is logged in, if not it redirects them to the login page. When this code is called from a page, it checks to see if the user viewing the page is logged in. If the user is not logged in, they are redirected to the login page. The user is redirected in such a way that, upon logging in, they will be sent directly to the page they were originally trying to access. since: 1.5.0 |
| check_admin_referer( $action = -1, $query_arg = '_wpnonce' ) X-Ref |
| Ensures intent by verifying that a user was referred from another admin page with the correct security nonce. This function ensures the user intends to perform a given action, which helps protect against clickjacking style attacks. It verifies intent, not authorisation, therefore it does not verify the user's capabilities. This should be performed with `current_user_can()` or similar. If the nonce value is invalid, the function will exit with an "Are You Sure?" style message. param: int|string $action The nonce action. param: string $query_arg Optional. Key to check for nonce in `$_REQUEST`. Default '_wpnonce'. return: int|false 1 if the nonce is valid and generated between 0-12 hours ago, since: 1.2.0 since: 2.5.0 The `$query_arg` parameter was added. |
| check_ajax_referer( $action = -1, $query_arg = false, $die = true ) X-Ref |
| Verifies the Ajax request to prevent processing requests external of the blog. param: int|string $action Action nonce. param: false|string $query_arg Optional. Key to check for the nonce in `$_REQUEST` (since 2.5). If false, param: bool $die Optional. Whether to die early when the nonce cannot be verified. return: int|false 1 if the nonce is valid and generated between 0-12 hours ago, since: 2.0.3 |
| wp_redirect( $location, $status = 302, $x_redirect_by = 'WordPress' ) X-Ref |
| Redirects to another page. Note: wp_redirect() does not exit automatically, and should almost always be followed by a call to `exit;`: wp_redirect( $url ); exit; Exiting can also be selectively manipulated by using wp_redirect() as a conditional in conjunction with the {@see 'wp_redirect'} and {@see 'wp_redirect_location'} filters: if ( wp_redirect( $url ) ) { exit; } param: string $location The path or URL to redirect to. param: int $status Optional. HTTP response status code to use. Default '302' (Moved Temporarily). param: string $x_redirect_by Optional. The application doing the redirect. Default 'WordPress'. return: bool False if the redirect was cancelled, true otherwise. since: 1.5.1 since: 5.1.0 The `$x_redirect_by` parameter was added. since: 5.4.0 On invalid status codes, wp_die() is called. |
| wp_sanitize_redirect( $location ) X-Ref |
| Sanitizes a URL for use in a redirect. param: string $location The path to redirect to. return: string Redirect-sanitized URL. since: 2.3.0 |
| _wp_sanitize_utf8_in_redirect( $matches ) X-Ref |
| URL encode UTF-8 characters in a URL. param: array $matches RegEx matches against the redirect location. return: string URL-encoded version of the first RegEx match. since: 4.2.0 |
| wp_safe_redirect( $location, $status = 302, $x_redirect_by = 'WordPress' ) X-Ref |
| Performs a safe (local) redirect, using wp_redirect(). Checks whether the $location is using an allowed host, if it has an absolute path. A plugin can therefore set or remove allowed host(s) to or from the list. If the host is not allowed, then the redirect defaults to wp-admin on the siteurl instead. This prevents malicious redirects which redirect to another host, but only used in a few places. Note: wp_safe_redirect() does not exit automatically, and should almost always be followed by a call to `exit;`: wp_safe_redirect( $url ); exit; Exiting can also be selectively manipulated by using wp_safe_redirect() as a conditional in conjunction with the {@see 'wp_redirect'} and {@see 'wp_redirect_location'} filters: if ( wp_safe_redirect( $url ) ) { exit; } param: string $location The path or URL to redirect to. param: int $status Optional. HTTP response status code to use. Default '302' (Moved Temporarily). param: string $x_redirect_by Optional. The application doing the redirect. Default 'WordPress'. return: bool False if the redirect was cancelled, true otherwise. since: 2.3.0 since: 5.1.0 The return value from wp_redirect() is now passed on, and the `$x_redirect_by` parameter was added. |
| wp_validate_redirect( $location, $default = '' ) X-Ref |
| Validates a URL for use in a redirect. Checks whether the $location is using an allowed host, if it has an absolute path. A plugin can therefore set or remove allowed host(s) to or from the list. If the host is not allowed, then the redirect is to $default supplied param: string $location The redirect to validate param: string $default The value to return if $location is not allowed return: string redirect-sanitized URL since: 2.8.1 |
| wp_notify_postauthor( $comment_id, $deprecated = null ) X-Ref |
| Notify an author (and/or others) of a comment/trackback/pingback on a post. param: int|WP_Comment $comment_id Comment ID or WP_Comment object. param: string $deprecated Not used return: bool True on completion. False if no email addresses were specified. since: 1.0.0 |
| wp_notify_moderator( $comment_id ) X-Ref |
| Notifies the moderator of the site about a new comment that is awaiting approval. param: int $comment_id Comment ID. return: true Always returns true. since: 1.0.0 |
| wp_password_change_notification( $user ) X-Ref |
| Notify the blog admin of a user changing password, normally via email. param: WP_User $user User object. since: 2.7.0 |
| wp_new_user_notification( $user_id, $deprecated = null, $notify = '' ) X-Ref |
| Email login credentials to a newly-registered user. A new user registration notification is also sent to admin email. param: int $user_id User ID. param: null $deprecated Not used (argument deprecated). param: string $notify Optional. Type of notification that should happen. Accepts 'admin' or an empty since: 2.0.0 since: 4.3.0 The `$plaintext_pass` parameter was changed to `$notify`. since: 4.3.1 The `$plaintext_pass` parameter was deprecated. `$notify` added as a third parameter. since: 4.6.0 The `$notify` parameter accepts 'user' for sending notification only to the user created. |
| wp_nonce_tick() X-Ref |
| Returns the time-dependent variable for nonce creation. A nonce has a lifespan of two ticks. Nonces in their second tick may be updated, e.g. by autosave. return: float Float value rounded up to the next highest integer. since: 2.5.0 |
| wp_verify_nonce( $nonce, $action = -1 ) X-Ref |
| Verifies that a correct security nonce was used with time limit. A nonce is valid for 24 hours (by default). param: string $nonce Nonce value that was used for verification, usually via a form field. param: string|int $action Should give context to what is taking place and be the same when nonce was created. return: int|false 1 if the nonce is valid and generated between 0-12 hours ago, since: 2.0.3 |
| wp_create_nonce( $action = -1 ) X-Ref |
| Creates a cryptographic token tied to a specific action, user, user session, and window of time. param: string|int $action Scalar value to add context to the nonce. return: string The token. since: 2.0.3 since: 4.0.0 Session tokens were integrated with nonce creation |
| wp_salt( $scheme = 'auth' ) X-Ref |
| Returns a salt to add to hashes. Salts are created using secret keys. Secret keys are located in two places: in the database and in the wp-config.php file. The secret key in the database is randomly generated and will be appended to the secret keys in wp-config.php. The secret keys in wp-config.php should be updated to strong, random keys to maximize security. Below is an example of how the secret key constants are defined. Do not paste this example directly into wp-config.php. Instead, have a {@link https://api.wordpress.org/secret-key/1.1/salt/ secret key created} just for you. define('AUTH_KEY', ' Xakm<o xQy rw4EMsLKM-?!T+,PFF})H4lzcW57AF0U@N@< >M%G4Yt>f`z]MON'); define('SECURE_AUTH_KEY', 'LzJ}op]mr|6+![P}Ak:uNdJCJZd>(Hx.-Mh#Tz)pCIU#uGEnfFz|f ;;eU%/U^O~'); define('LOGGED_IN_KEY', '|i|Ux`9<p-h$aFf(qnT:sDO:D1P^wZ$$/Ra@miTJi9G;ddp_<q}6H1)o|a +&JCM'); define('NONCE_KEY', '%:R{[P|,s.KuMltH5}cI;/k<Gx~j!f0I)m_sIyu+&NJZ)-iO>z7X>QYR0Z_XnZ@|'); define('AUTH_SALT', 'eZyT)-Naw]F8CwA*VaW#q*|.)g@o}||wf~@C-YSt}(dh_r6EbI#A,y|nU2{B#JBW'); define('SECURE_AUTH_SALT', '!=oLUTXh,QW=H `}`L|9/^4-3 STz},T(w}W<I`.JjPi)<Bmf1v,HpGe}T1:Xt7n'); define('LOGGED_IN_SALT', '+XSqHc;@Q*K_b|Z?NC[3H!!EONbh.n<+=uKR:>*c(u`g~EJBf#8u#R{mUEZrozmm'); define('NONCE_SALT', 'h`GXHhD>SLWVfg1(1(N{;.V!MoE(SfbA_ksP@&`+AycHcAV$+?@3q+rxV{%^VyKT'); Salting passwords helps against tools which has stored hashed values of common dictionary strings. The added values makes it harder to crack. param: string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce) return: string Salt value since: 2.5.0 |
| wp_hash( $data, $scheme = 'auth' ) X-Ref |
| Get hash of given string. param: string $data Plain text to hash param: string $scheme Authentication scheme (auth, secure_auth, logged_in, nonce) return: string Hash of $data since: 2.0.3 |
| wp_hash_password( $password ) X-Ref |
| Create a hash (encrypt) of a plain text password. For integration with other applications, this function can be overwritten to instead use the other package password checking algorithm. param: string $password Plain text user password to hash return: string The hash string of the password since: 2.5.0 |
| wp_check_password( $password, $hash, $user_id = '' ) X-Ref |
| Checks the plaintext password against the encrypted Password. Maintains compatibility between old version and the new cookie authentication protocol using PHPass library. The $hash parameter is the encrypted password and the function compares the plain text password when encrypted similarly against the already encrypted password to see if they match. For integration with other applications, this function can be overwritten to instead use the other package password checking algorithm. param: string $password Plaintext user's password param: string $hash Hash of the user's password to check against. param: string|int $user_id Optional. User ID. return: bool False, if the $password does not match the hashed password since: 2.5.0 |
| wp_generate_password( $length = 12, $special_chars = true, $extra_special_chars = false ) X-Ref |
| Generates a random password drawn from the defined set of characters. Uses wp_rand() is used to create passwords with far less predictability than similar native PHP functions like `rand()` or `mt_rand()`. param: int $length Optional. The length of password to generate. Default 12. param: bool $special_chars Optional. Whether to include standard special characters. param: bool $extra_special_chars Optional. Whether to include other special characters. return: string The random password. since: 2.5.0 |
| wp_rand( $min = 0, $max = 0 ) X-Ref |
| Generates a random number. param: int $min Lower limit for the generated number param: int $max Upper limit for the generated number return: int A random number between min and max since: 2.6.2 since: 4.4.0 Uses PHP7 random_int() or the random_compat library if available. |
| wp_set_password( $password, $user_id ) X-Ref |
| Updates the user's password with a new encrypted one. For integration with other applications, this function can be overwritten to instead use the other package password checking algorithm. Please note: This function should be used sparingly and is really only meant for single-time application. Leveraging this improperly in a plugin or theme could result in an endless loop of password resets if precautions are not taken to ensure it does not execute on every page load. param: string $password The plaintext new user password param: int $user_id User ID since: 2.5.0 |
| get_avatar( $id_or_email, $size = 96, $default = '', $alt = '', $args = null ) X-Ref |
| Retrieve the avatar `<img>` tag for a user, email address, MD5 hash, comment, or post. param: mixed $id_or_email The Gravatar to retrieve. Accepts a user_id, gravatar md5 hash, param: int $size Optional. Height and width of the avatar image file in pixels. Default 96. param: string $default Optional. URL for the default image or a default type. Accepts '404' param: string $alt Optional. Alternative text to use in img tag. Default empty. param: array $args { return: string|false `<img>` tag for the user's avatar. False on failure. since: 2.5.0 since: 4.2.0 Optional `$args` parameter added. |
| wp_text_diff( $left_string, $right_string, $args = null ) X-Ref |
| Displays a human readable HTML representation of the difference between two strings. The Diff is available for getting the changes between versions. The output is HTML, so the primary use is for displaying the changes. If the two strings are equivalent, then an empty string will be returned. param: string $left_string "old" (left) version of string param: string $right_string "new" (right) version of string param: string|array $args { return: string Empty string if strings are equivalent or HTML with differences. since: 2.6.0 |
| Generated: Tue Dec 3 01:00:02 2024 | Cross-referenced by PHPXref 0.7.1 |