Wire is the base class for most ProcessWire classes and modules.

Wire derived classes have a $this->wire() method that provides access to ProcessWire's API variables. API variables can also be accessed as local properties in most cases. Wire also provides basic methods for tracking changes and managing runtime notices specific to the instance.

Wire derived classes can specify which methods are "hookable" by precending the method name with 3 underscores like this: ___myMethod(). Other classes can then hook either before or after that method, modifying arguments or return values. Several other hook methods are also provided for Wire derived classes that are hooking into others.


Click any linked item for full usage details and examples. Hookable methods are indicated with the icon.

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Common

NameReturnSummary 
Wire::wire()
mixedGet an API variable, create an API variable, or inject dependencies. 

Notices

NameReturnSummary 
Wire::error($text)
$thisRecord an non-fatal error message in the system-wide notices. 
Wire::errors()
Notices array stringReturn or manage errors recorded by just this object or all Wire objects 
Wire::log()
WireLogLog a message for this class
Wire::message($text)
$thisRecord an informational or “success” message in the system-wide notices. 
Wire::messages()
Notices array stringReturn or manage messages recorded by just this object or all Wire objects 
Wire::warning($text)
$thisRecord a warning error message in the system-wide notices. 
Wire::warnings()
Notices array stringReturn or manage warnings recorded by just this object or all Wire objects 

Identification

NameReturnSummary 
Wire::className()
stringReturn this object’s class name 
Wire::getInstanceNum()
intGet this Wire object’s instance number 

For hooks

These methods are only useful for hooking and should not be called directly.

NameReturnSummary 
Wire::callUnknown(string $method, array $arguments)
null mixedIf method call resulted in no handler, this hookable method is called.
Wire::changed(string $what)
(nothing)Hookable method that is called whenever a property has changed while change tracking is enabled.
Wire::trackException($e)
$thisHookable method called when an Exception occurs

Changes

Methods to support tracking and retrieval of changes made to the object.

NameReturnSummary 
Wire::getChanges()
arrayReturn an array of properties that have changed while change tracking was on. 
Wire::isChanged()
boolDoes the object have changes, or has the given property changed? 
Wire::resetTrackChanges()
$thisClears out any tracked changes and turns change tracking ON or OFF 
Wire::setTrackChanges()
$thisTurn change tracking ON or OFF 
Wire::trackChange(string $what)
$thisTrack a change to a property in this object 
Wire::trackChanges()
int boolReturns true or 1 if change tracking is on, or false or 0 if it is not, or mode bitmask (int) if requested. 
Wire::trackChangesOn const2For setTrackChanges() method flags: track names only (default). 
Wire::trackChangesValues const4For setTrackChanges() method flags: track names and values. 
Wire::untrackChange(string $what)
$thisUntrack a change to a property in this object 

Api helpers

Shortcuts to ProcessWire API variables. Access without any arguments returns the API variable. Some support arguments as shortcuts to methods in the API variable.

NameReturnSummary 
Wire::cache()
WireCache string array PageArray nullAccess the $cache API variable as a function.
Wire::config()
Config mixedAccess the $config API variable as a function.
Wire::database()
WireDatabasePDOAccess the $database API variable as a function.
Wire::datetime()
WireDateTime string intAccess the $datetime API variable as a function.
Wire::fields()
Field Fields nullAccess the $fields API variable as a function.
Wire::files()
WireFileToolsAccess the $files API variable as a function.
Wire::input()
WireInput WireInputData array string int nullAccess the $input API variable as a function.
Wire::inputCookie()
WireInputData string int array nullAccess the $input->cookie() API variable as a function.
Wire::inputGet()
WireInputData string int array nullAccess the $input->get() API variable as a function.
Wire::inputPost()
WireInputData string int array nullAccess the $input->post() API variable as a function.
Wire::languages()
Languages Language NullPage nullAccess the $languages API variable as a function.
Wire::modules()
Modules Module ConfigurableModule nullAccess the $modules API variable as a function.
Wire::page()
Page MixedAccess the $page API variable as a function.
Wire::pages()
Pages PageArray Page NullPageAccess the $pages API variable as a function.
Wire::permissions()
Permissions Permission PageArray null NullPageAccess the $permissions API variable as a function.
Wire::roles()
Roles Role PageArray null NullPageAccess the $roles API variable as a function.
Wire::sanitizer()
Sanitizer string int array null mixedAccess the $sanitizer API variable as a function.
Wire::session()
Session mixedAccess the $session API variable as a function.
Wire::templates()
Templates Template nullAccess the $templates API variable as a function.
Wire::user()
User mixedAccess the $user API variable as a function.
Wire::users()
Users PageArray User mixedAccess the $users API variable as a function.

API reference based on ProcessWire core version 3.0.135

Twitter updates

  • New post: Version 3.0.135 of ProcessWire on the dev branch focuses on some .htaccess updates, adds clarity to debug mode, and improves upon the installer— More
    5 July 2019
  • ProcessWire 3.0.133 adds a useful new Page::meta() method for a new type of page-specific persistent data storage, adds the ability for users to create their own bookmarks in Lister, and has a handy and time saving update for the asmSelect input type— More
    14 June 2019
  • New post: This week we’ll take a look at 3 different WEBP image strategies that you can use in ProcessWire 3.0.132+. Then we’ll dive into a major update for the Google Client API module, and finish up by outlining some useful new updates in FormBuilder— More
    31 May 2019

Latest news

  • ProcessWire Weekly #270
    This week in the 270th issue of ProcessWire Weekly we're going to cover the SearchEngine module, feature some recent support forum highlights, and introduce a brand new site of the week. Read on!
    Weekly.pw / 13 July 2019
  • ProcessWire 3.0.135 core updates
    Version 3.0.135 of ProcessWire on the dev branch focuses on .htaccess updates, adds additional layers of security, adds clarity to debug mode, and improves upon the installer.
    Blog / 3 July 2019
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“ProcessWire is like a breath of fresh air. So powerful yet simple to build with and customise, and web editors love it too.” —Margaret Chatwin, Web developer