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

Hooks

Methods for managing hooks for an object instance or class.

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 WireInputDataCookie array string int nullAccess the $input API variable as a function.
Wire::inputCookie()
WireInputDataCookie 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 3.0.148

Twitter updates

  • This week we’ve got a few new and interesting core updates in progress, though none quite ready to release just yet. So rather than releasing version 3.0.154 today, I thought we'd instead take a brief look at what’s coming over the next few weeks… More
    3 April 2020
  • ProcessWire 3.0.153 (dev) focuses on comments field updates, significant refactoring/improvements to ProcessWire’s core Template class and PagesLoader class (which is used by the pages API variable), and we introduce a useful new pages API method— More
    20 March 2020
  • ProcessWire 3.0.152 core updates— This week we have some major improvements to our core date/time Inputfield, as well as a new ability to specify your own custom classes for Page objects— More
    6 March 2020

Latest news

  • ProcessWire Weekly #308
    In the 308th issue of ProcessWire Weekly we're going to take a look at some upcoming core and pro module updates, check out two all-new third party modules, and more. Read on!
    Weekly.pw / 4 April 2020
  • ProcessWire updates and additions in progress
    This week we’ve got a few new and interesting core updates in progress, though none quite ready to release just yet. So rather than releasing version 3.0.154 today, I thought we'd instead take a brief look at what’s coming over the next few weeks. This post covers all the details.
    Blog / 3 April 2020
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I just love the easy and intuitive ProcessWire API. ProcessWire rocks!” —Jens Martsch, Web developer