[GitHub/WoltLab/woltlab.github.io.git] / 5.4 / php / apps / index.html


<!doctype html>
<html lang="en" class="no-js">
  <head>
    
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width,initial-scale=1">
      
      
      <link rel="shortcut icon" href="../../assets/default.favicon.ico">
      <meta name="generator" content="mkdocs-1.1.2, mkdocs-material-7.0.5">
    
    
        <title>Apps - WoltLab Suite Documentation</title>
      
    
      <link rel="stylesheet" href="../../assets/stylesheets/main.77f3fd56.min.css">
      
        
        <link rel="stylesheet" href="../../assets/stylesheets/palette.7fa14f5b.min.css">
        
          
          <meta name="theme-color" content="#009485">
        
      
      <link rel="stylesheet" href="../../stylesheets/extra.css">
    
    
  </head>
  
  
    <body dir="ltr" data-md-color-scheme="" data-md-color-primary="teal" data-md-color-accent="">
      
  
    <input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
    <input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
    <label class="md-overlay" for="__drawer"></label>
    <div data-md-component="skip">
      
        
        <a href="#apps-for-woltlab-suite" class="md-skip">
          Skip to content
        </a>
      
    </div>
    <div data-md-component="announce">
      
        <aside class="md-announce">
          <div class="md-announce__inner md-grid md-typeset">
            
    <a href="https://www.woltlab.com">Back to <strong>woltlab.com</strong></a>

          </div>
        </aside>
      
    </div>
    
      
<header class="md-header" data-md-component="header">
  <nav class="md-header__inner md-grid" aria-label="Header">
    <a href="../.." title="WoltLab Suite Documentation" class="md-header__button md-logo" aria-label="WoltLab Suite Documentation">
      
  <img src="../../assets/logo.png" alt="logo">

    </a>
    <label class="md-header__button md-icon" for="__drawer">
      <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2z"/></svg>
    </label>
    <div class="md-header__title" data-md-component="header-title">
      <div class="md-header__ellipsis">
        <div class="md-header__topic">
          <span class="md-ellipsis">
            WoltLab Suite Documentation
          </span>
        </div>
        <div class="md-header__topic" data-md-component="header-topic">
          <span class="md-ellipsis">
            
              Apps
            
          </span>
        </div>
      </div>
    </div>
    <div class="md-header__options">
      
    </div>
    
    
      <div class="md-header__source">
        
<a href="https://github.com/WoltLab/docs.woltlab.com/" title="Go to repository" class="md-source" data-md-component="source">
  <div class="md-source__icon md-icon">
    
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
  </div>
  <div class="md-source__repository">
    GitHub
  </div>
</a>
      </div>
    
  </nav>
</header>
    
    <div class="md-container" data-md-component="container">
      
      
      <main class="md-main" data-md-component="main">
        <div class="md-main__inner md-grid">
          
            
              <div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" >
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    

<nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0">
  <label class="md-nav__title" for="__drawer">
    <a href="../.." title="WoltLab Suite Documentation" class="md-nav__button md-logo" aria-label="WoltLab Suite Documentation">
      
  <img src="../../assets/logo.png" alt="logo">

    </a>
    WoltLab Suite Documentation
  </label>
  
    <div class="md-nav__source">
      
<a href="https://github.com/WoltLab/docs.woltlab.com/" title="Go to repository" class="md-source" data-md-component="source">
  <div class="md-source__icon md-icon">
    
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M439.55 236.05L244 40.45a28.87 28.87 0 0 0-40.81 0l-40.66 40.63 51.52 51.52c27.06-9.14 52.68 16.77 43.39 43.68l49.66 49.66c34.23-11.8 61.18 31 35.47 56.69-26.49 26.49-70.21-2.87-56-37.34L240.22 199v121.85c25.3 12.54 22.26 41.85 9.08 55a34.34 34.34 0 0 1-48.55 0c-17.57-17.6-11.07-46.91 11.25-56v-123c-20.8-8.51-24.6-30.74-18.64-45L142.57 101 8.45 235.14a28.86 28.86 0 0 0 0 40.81l195.61 195.6a28.86 28.86 0 0 0 40.8 0l194.69-194.69a28.86 28.86 0 0 0 0-40.81z"/></svg>
  </div>
  <div class="md-source__repository">
    GitHub
  </div>
</a>
    </div>
  
  <ul class="md-nav__list" data-md-scrollfix>
    
      
    <li class="md-nav__item">
      <a href="../../getting-started/" class="md-nav__link">
        Getting Started
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--active md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_2" type="checkbox" id="__nav_2" checked>
      
      <label class="md-nav__link" for="__nav_2">
        PHP API
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="PHP API" data-md-level="1">
        <label class="md-nav__title" for="__nav_2">
          <span class="md-nav__icon md-icon"></span>
          PHP API
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../pages/" class="md-nav__link">
        Pages
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../database-objects/" class="md-nav__link">
        Database Objects
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../database-access/" class="md-nav__link">
        Database Access
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../exceptions/" class="md-nav__link">
        Exceptions
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_2_5" type="checkbox" id="__nav_2_5" >
      
      <label class="md-nav__link" for="__nav_2_5">
        API
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="API" data-md-level="2">
        <label class="md-nav__title" for="__nav_2_5">
          <span class="md-nav__icon md-icon"></span>
          API
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../api/caches/" class="md-nav__link">
        Caches
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/comments/" class="md-nav__link">
        Comments
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/cronjobs/" class="md-nav__link">
        Cronjobs
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/events/" class="md-nav__link">
        Events
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_2_5_5" type="checkbox" id="__nav_2_5_5" >
      
      <label class="md-nav__link" for="__nav_2_5_5">
        Form Builder
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Form Builder" data-md-level="3">
        <label class="md-nav__title" for="__nav_2_5_5">
          <span class="md-nav__icon md-icon"></span>
          Form Builder
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../api/form_builder/overview/" class="md-nav__link">
        Overview
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/form_builder/structure/" class="md-nav__link">
        Structure
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/form_builder/form_fields/" class="md-nav__link">
        Fields
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/form_builder/validation_data/" class="md-nav__link">
        Validation and Data
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/form_builder/dependencies/" class="md-nav__link">
        Dependencies
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/package_installation_plugins/" class="md-nav__link">
        Package Installation Plugins
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/user_activity_points/" class="md-nav__link">
        User Activity Points
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/user_notifications/" class="md-nav__link">
        User Notifications
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../api/sitemaps/" class="md-nav__link">
        Sitemaps
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item">
      <a href="../code-style/" class="md-nav__link">
        Code Style
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--active">
      
      <input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
      
        
        <label class="md-nav__link md-nav__link--active" for="__toc">
          Apps
          <span class="md-nav__icon md-icon"></span>
        </label>
      
      <a href="./" class="md-nav__link md-nav__link--active">
        Apps
      </a>
      
        
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
  
  
    <label class="md-nav__title" for="__toc">
      <span class="md-nav__icon md-icon"></span>
      Table of contents
    </label>
    <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
      
        <li class="md-nav__item">
  <a href="#introduction" class="md-nav__link">
    Introduction
  </a>
  
</li>
      
        <li class="md-nav__item">
  <a href="#differences-to-plugins" class="md-nav__link">
    Differences to Plugins
  </a>
  
    <nav class="md-nav" aria-label="Differences to Plugins">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#unique-namespace" class="md-nav__link">
    Unique Namespace
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#unique-database-table-prefix" class="md-nav__link">
    Unique Database Table Prefix
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#separate-domain-and-path-configuration" class="md-nav__link">
    Separate Domain and Path Configuration
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
      
        <li class="md-nav__item">
  <a href="#creating-an-app" class="md-nav__link">
    Creating an App
  </a>
  
    <nav class="md-nav" aria-label="Creating an App">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#packagexml" class="md-nav__link">
    package.xml
  </a>
  
    <nav class="md-nav" aria-label="package.xml">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#isapplication1isapplication" class="md-nav__link">
    &lt;isapplication&gt;1&lt;/isapplication&gt;
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#applicationdirectoryexampleapplicationdirectory" class="md-nav__link">
    &lt;applicationdirectory&gt;example&lt;/applicationdirectory&gt;
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
        
          <li class="md-nav__item">
  <a href="#minimum-required-files" class="md-nav__link">
    Minimum Required Files
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
      
    </ul>
  
</nav>
      
    </li>
  

    <li class="md-nav__item">
      <a href="../gdpr/" class="md-nav__link">
        GDPR
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_3" type="checkbox" id="__nav_3" >
      
      <label class="md-nav__link" for="__nav_3">
        Languages, Templates & CSS
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Languages, Templates & CSS" data-md-level="1">
        <label class="md-nav__title" for="__nav_3">
          <span class="md-nav__icon md-icon"></span>
          Languages, Templates & CSS
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../view/languages/" class="md-nav__link">
        Languages
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../view/templates/" class="md-nav__link">
        Templates
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../view/css/" class="md-nav__link">
        CSS
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4" type="checkbox" id="__nav_4" >
      
      <label class="md-nav__link" for="__nav_4">
        JavaScript API
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="JavaScript API" data-md-level="1">
        <label class="md-nav__title" for="__nav_4">
          <span class="md-nav__icon md-icon"></span>
          JavaScript API
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../javascript/general-usage/" class="md-nav__link">
        General Usage
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_4_2" type="checkbox" id="__nav_4_2" >
      
      <label class="md-nav__link" for="__nav_4_2">
        New API
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="New API" data-md-level="2">
        <label class="md-nav__title" for="__nav_4_2">
          <span class="md-nav__icon md-icon"></span>
          New API
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../javascript/new-api_writing-a-module/" class="md-nav__link">
        Writing a module
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_data-structures/" class="md-nav__link">
        Data Structures
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_core/" class="md-nav__link">
        Core Functions
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_dom/" class="md-nav__link">
        DOM
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_events/" class="md-nav__link">
        Event Handling
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_ajax/" class="md-nav__link">
        Ajax
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_dialogs/" class="md-nav__link">
        Dialogs
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_browser/" class="md-nav__link">
        Browser and Screen Sizes
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/new-api_ui/" class="md-nav__link">
        User Interface
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/legacy-api/" class="md-nav__link">
        Legacy API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/helper-functions/" class="md-nav__link">
        Helper Functions
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../javascript/code-snippets/" class="md-nav__link">
        Code Snippets
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" >
      
      <label class="md-nav__link" for="__nav_5">
        Package Components
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Package Components" data-md-level="1">
        <label class="md-nav__title" for="__nav_5">
          <span class="md-nav__icon md-icon"></span>
          Package Components
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../package/package-xml/" class="md-nav__link">
        package.xml
      </a>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5_2" type="checkbox" id="__nav_5_2" >
      
      <label class="md-nav__link" for="__nav_5_2">
        PIPs
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="PIPs" data-md-level="2">
        <label class="md-nav__title" for="__nav_5_2">
          <span class="md-nav__icon md-icon"></span>
          PIPs
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../package/pip/" class="md-nav__link">
        Overview
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/acl-option/" class="md-nav__link">
        aclOption
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/acp-menu/" class="md-nav__link">
        acpMenu
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/acp-search-provider/" class="md-nav__link">
        acpSearchProvider
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/acp-template/" class="md-nav__link">
        acpTemplate
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/bbcode/" class="md-nav__link">
        bbcode
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/box/" class="md-nav__link">
        box
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/clipboard-action/" class="md-nav__link">
        clipboardAction
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/core-object/" class="md-nav__link">
        coreObject
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/cronjob/" class="md-nav__link">
        cronjob
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/event-listener/" class="md-nav__link">
        eventListener
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/file/" class="md-nav__link">
        file
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/language/" class="md-nav__link">
        language
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/media-provider/" class="md-nav__link">
        mediaProvider
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/menu/" class="md-nav__link">
        menu
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/menu-item/" class="md-nav__link">
        menuItem
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/object-type/" class="md-nav__link">
        objectType
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/object-type-definition/" class="md-nav__link">
        objectTypeDefinition
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/option/" class="md-nav__link">
        option
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/page/" class="md-nav__link">
        page
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/pip/" class="md-nav__link">
        pip
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/script/" class="md-nav__link">
        script
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/smiley/" class="md-nav__link">
        smiley
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/sql/" class="md-nav__link">
        sql
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/style/" class="md-nav__link">
        style
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/template/" class="md-nav__link">
        template
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/template-listener/" class="md-nav__link">
        templateListener
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/user-group-option/" class="md-nav__link">
        userGroupOption
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/user-menu/" class="md-nav__link">
        userMenu
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/user-notification-event/" class="md-nav__link">
        userNotificationEvent
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/user-option/" class="md-nav__link">
        userOption
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/pip/user-profile-menu/" class="md-nav__link">
        userProfileMenu
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item">
      <a href="../../package/database-php-api/" class="md-nav__link">
        Database PHP API
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6" type="checkbox" id="__nav_6" >
      
      <label class="md-nav__link" for="__nav_6">
        Migration
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migration" data-md-level="1">
        <label class="md-nav__title" for="__nav_6">
          <span class="md-nav__icon md-icon"></span>
          Migration
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6_1" type="checkbox" id="__nav_6_1" >
      
      <label class="md-nav__link" for="__nav_6_1">
        Migrating from WSC 5.3
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migrating from WSC 5.3" data-md-level="2">
        <label class="md-nav__title" for="__nav_6_1">
          <span class="md-nav__icon md-icon"></span>
          Migrating from WSC 5.3
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../migration/wsc53/php/" class="md-nav__link">
        PHP API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc53/session/" class="md-nav__link">
        Session Handling and Authentication
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc53/javascript/" class="md-nav__link">
        JavaScript
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc53/templates/" class="md-nav__link">
        Templates
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc53/libraries/" class="md-nav__link">
        Third Party Libraries
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6_2" type="checkbox" id="__nav_6_2" >
      
      <label class="md-nav__link" for="__nav_6_2">
        Migrating from WSC 5.2
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migrating from WSC 5.2" data-md-level="2">
        <label class="md-nav__title" for="__nav_6_2">
          <span class="md-nav__icon md-icon"></span>
          Migrating from WSC 5.2
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../migration/wsc52/php/" class="md-nav__link">
        PHP API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc52/templates/" class="md-nav__link">
        Templates and Languages
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc52/libraries/" class="md-nav__link">
        Third Party Libraries
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6_3" type="checkbox" id="__nav_6_3" >
      
      <label class="md-nav__link" for="__nav_6_3">
        Migrating from WSC 3.1
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migrating from WSC 3.1" data-md-level="2">
        <label class="md-nav__title" for="__nav_6_3">
          <span class="md-nav__icon md-icon"></span>
          Migrating from WSC 3.1
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../migration/wsc31/php/" class="md-nav__link">
        PHP API
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6_4" type="checkbox" id="__nav_6_4" >
      
      <label class="md-nav__link" for="__nav_6_4">
        Migrating from WSC 3.0
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migrating from WSC 3.0" data-md-level="2">
        <label class="md-nav__title" for="__nav_6_4">
          <span class="md-nav__icon md-icon"></span>
          Migrating from WSC 3.0
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../migration/wsc30/php/" class="md-nav__link">
        PHP API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc30/javascript/" class="md-nav__link">
        JavaScript API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc30/templates/" class="md-nav__link">
        Templates
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc30/css/" class="md-nav__link">
        CSS
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wsc30/package/" class="md-nav__link">
        Package Components
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_6_5" type="checkbox" id="__nav_6_5" >
      
      <label class="md-nav__link" for="__nav_6_5">
        Migrating from WCF 2.1
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Migrating from WCF 2.1" data-md-level="2">
        <label class="md-nav__title" for="__nav_6_5">
          <span class="md-nav__icon md-icon"></span>
          Migrating from WCF 2.1
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../migration/wcf21/php/" class="md-nav__link">
        PHP API
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wcf21/templates/" class="md-nav__link">
        Templates
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wcf21/css/" class="md-nav__link">
        CSS
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../migration/wcf21/package/" class="md-nav__link">
        Package Components
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

        </ul>
      </nav>
    </li>
  

    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" >
      
      <label class="md-nav__link" for="__nav_7">
        Tutorials
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Tutorials" data-md-level="1">
        <label class="md-nav__title" for="__nav_7">
          <span class="md-nav__icon md-icon"></span>
          Tutorials
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item md-nav__item--nested">
      
      
        <input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_1" type="checkbox" id="__nav_7_1" >
      
      <label class="md-nav__link" for="__nav_7_1">
        Tutorial Series
        <span class="md-nav__icon md-icon"></span>
      </label>
      <nav class="md-nav" aria-label="Tutorial Series" data-md-level="2">
        <label class="md-nav__title" for="__nav_7_1">
          <span class="md-nav__icon md-icon"></span>
          Tutorial Series
        </label>
        <ul class="md-nav__list" data-md-scrollfix>
          
            
    <li class="md-nav__item">
      <a href="../../tutorial/series/overview/" class="md-nav__link">
        Overview
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../tutorial/series/part_1/" class="md-nav__link">
        Part 1
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../tutorial/series/part_2/" class="md-nav__link">
        Part 2
      </a>
    </li>
  

    <li class="md-nav__item">
      <a href="../../tutorial/series/part_3/" class="md-nav__link">
        Part 3
      </a>
    </li>
  

        </ul>
      </nav>
    </li>
  

        </ul>
      </nav>
    </li>
  

  </ul>
</nav>
                  </div>
                </div>
              </div>
            
            
              <div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
                <div class="md-sidebar__scrollwrap">
                  <div class="md-sidebar__inner">
                    
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
  
  
    <label class="md-nav__title" for="__toc">
      <span class="md-nav__icon md-icon"></span>
      Table of contents
    </label>
    <ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
      
        <li class="md-nav__item">
  <a href="#introduction" class="md-nav__link">
    Introduction
  </a>
  
</li>
      
        <li class="md-nav__item">
  <a href="#differences-to-plugins" class="md-nav__link">
    Differences to Plugins
  </a>
  
    <nav class="md-nav" aria-label="Differences to Plugins">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#unique-namespace" class="md-nav__link">
    Unique Namespace
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#unique-database-table-prefix" class="md-nav__link">
    Unique Database Table Prefix
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#separate-domain-and-path-configuration" class="md-nav__link">
    Separate Domain and Path Configuration
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
      
        <li class="md-nav__item">
  <a href="#creating-an-app" class="md-nav__link">
    Creating an App
  </a>
  
    <nav class="md-nav" aria-label="Creating an App">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#packagexml" class="md-nav__link">
    package.xml
  </a>
  
    <nav class="md-nav" aria-label="package.xml">
      <ul class="md-nav__list">
        
          <li class="md-nav__item">
  <a href="#isapplication1isapplication" class="md-nav__link">
    &lt;isapplication&gt;1&lt;/isapplication&gt;
  </a>
  
</li>
        
          <li class="md-nav__item">
  <a href="#applicationdirectoryexampleapplicationdirectory" class="md-nav__link">
    &lt;applicationdirectory&gt;example&lt;/applicationdirectory&gt;
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
        
          <li class="md-nav__item">
  <a href="#minimum-required-files" class="md-nav__link">
    Minimum Required Files
  </a>
  
</li>
        
      </ul>
    </nav>
  
</li>
      
    </ul>
  
</nav>
                  </div>
                </div>
              </div>
            
          
          <div class="md-content" data-md-component="content">
            <article class="md-content__inner md-typeset">
              
                
                  <a href="https://github.com/WoltLab/docs.woltlab.com/edit/5.4/docs/php/apps.md" title="Edit this page" class="md-content__button md-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
                  </a>
                
                
                <h1 id="apps-for-woltlab-suite">Apps for WoltLab Suite<a class="headerlink" href="#apps-for-woltlab-suite" title="Permanent link">#</a></h1>
<h2 id="introduction">Introduction<a class="headerlink" href="#introduction" title="Permanent link">#</a></h2>
<p>Apps are among the most powerful components in WoltLab Suite. Unlike plugins
that extend an existing functionality and pages, apps have their own frontend
with a dedicated namespace, database table prefixes and template locations.</p>
<p>However, apps are meant to be a logical (and to some extent physical) separation
from other parts of the framework, including other installed apps. They offer
an additional layer of isolation and enable you to re-use class and template
names that are already in use by the Core itself.</p>
<p>If you've come here, thinking about the question if your next package should be
an app instead of a regular plugin, the result is almost always: <em>No.</em></p>
<h2 id="differences-to-plugins">Differences to Plugins<a class="headerlink" href="#differences-to-plugins" title="Permanent link">#</a></h2>
<p>Apps do offer a couple of unique features that are not available to plugins and
there are valid reasons to use one instead of a plugin, but they also increase
both the code and system complexity. There is a performance penalty for each
installed app, regardless if it is actively used in a request or not, simplying
being there forces the Core to include it in many places, for example, class
resolution or even simple tasks such as constructing a link.</p>
<h3 id="unique-namespace">Unique Namespace<a class="headerlink" href="#unique-namespace" title="Permanent link">#</a></h3>
<p>Each app has its own unique namespace that is entirely separated from the Core
and any other installed apps. The namespace is derived from the last part of the
package identifier, for example, <code>com.example.foo</code> will yield the namespace <code>foo</code>.</p>
<p>The namespace is always relative to the installation directory of the app, it
doesn't matter if the app is installed on <code>example.com/foo/</code> or in <code>example.com/bar/</code>,
the namespace will always resolve to the right directory.</p>
<p>This app namespace is also used for ACP templates, frontend templates and files:</p>
<div class="highlight"><pre><span></span><code><span class="c">&lt;!-- somewhere in the package.xml --&gt;</span>
<span class="nt">&lt;instructions</span> <span class="na">type=</span><span class="s">&quot;file&quot;</span> <span class="na">application=</span><span class="s">&quot;foo&quot;</span> <span class="nt">/&gt;</span>
</code></pre></div>
<h3 id="unique-database-table-prefix">Unique Database Table Prefix<a class="headerlink" href="#unique-database-table-prefix" title="Permanent link">#</a></h3>
<p>All database tables make use of a generic prefix that is derived from one of the
installed apps, including <code>wcf</code> which resolves to the Core itself. Following the
aforementioned example, the new prefix <code>fooN_</code> will be automatically registered
and recognized in any generated statement.</p>
<p>Any <code>DatabaseObject</code> that uses the app's namespace is automatically assumed to
use the app's database prefix. For instance, <code>foo\data\bar\Bar</code> is implicitly
mapped to the database table <code>fooN_bar</code>.</p>
<p>The app prefix is recognized in SQL-PIPs and statements that reference one of
its database tables are automatically rewritten to use the Core's instance number.</p>
<h3 id="separate-domain-and-path-configuration">Separate Domain and Path Configuration<a class="headerlink" href="#separate-domain-and-path-configuration" title="Permanent link">#</a></h3>
<p>Any controller that is provided by a plugin is served from the configured domain
and path of the corresponding app, such as plugins for the Core are always
served from the Core's directory. Apps are different and use their own domain
and/or path to present their content, additionally, this allows the app to re-use
a controller name that is already provided by the Core or any other app itself.</p>
<h2 id="creating-an-app">Creating an App<a class="headerlink" href="#creating-an-app" title="Permanent link">#</a></h2>
<div class="admonition danger">
<p class="admonition-title">This is a non-reversible operation! Once a package has been installed, its type cannot be changed without uninstalling and reinstalling the entire package, an app will always be an app and vice versa.</p>
</div>
<h3 id="packagexml"><code>package.xml</code><a class="headerlink" href="#packagexml" title="Permanent link">#</a></h3>
<p>The <code>package.xml</code> supports two additional elements in the <code>&lt;packageinformation&gt;</code>
block that are unique to applications.</p>
<h4 id="isapplication1isapplication"><code>&lt;isapplication&gt;1&lt;/isapplication&gt;</code><a class="headerlink" href="#isapplication1isapplication" title="Permanent link">#</a></h4>
<p>This element is responsible to flag a package as an app.</p>
<h4 id="applicationdirectoryexampleapplicationdirectory"><code>&lt;applicationdirectory&gt;example&lt;/applicationdirectory&gt;</code><a class="headerlink" href="#applicationdirectoryexampleapplicationdirectory" title="Permanent link">#</a></h4>
<p>Sets the suggested name of the application directory when installing it, the
path result in <code>&lt;path-to-the-core&gt;/example/</code>. If you leave this element out,
the app identifier (<code>com.example.foo -&gt; foo</code>) will be used instead.</p>
<h3 id="minimum-required-files">Minimum Required Files<a class="headerlink" href="#minimum-required-files" title="Permanent link">#</a></h3>
<p>An example project with the <a href="https://github.com/WoltLab/woltlab.github.io/tree/master/_includes/tutorial/basic-app/">source code can be found on GitHub</a>,
it includes everything that is required for a basic app.</p>
                
                  
<hr>
<div class="md-source-date">
  <small>
    
      Last update: 2021-01-08
    
  </small>
</div>
                  
                
            </article>
          </div>
        </div>
      </main>
      
        
<footer class="md-footer">
  
    <nav class="md-footer__inner md-grid" aria-label="Footer">
      
        <a href="../code-style/" class="md-footer__link md-footer__link--prev" rel="prev">
          <div class="md-footer__button md-icon">
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
          </div>
          <div class="md-footer__title">
            <div class="md-ellipsis">
              <span class="md-footer__direction">
                Previous
              </span>
              Code Style
            </div>
          </div>
        </a>
      
      
        <a href="../gdpr/" class="md-footer__link md-footer__link--next" rel="next">
          <div class="md-footer__title">
            <div class="md-ellipsis">
              <span class="md-footer__direction">
                Next
              </span>
              GDPR
            </div>
          </div>
          <div class="md-footer__button md-icon">
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M4 11v2h12l-5.5 5.5 1.42 1.42L19.84 12l-7.92-7.92L10.5 5.5 16 11H4z"/></svg>
          </div>
        </a>
      
    </nav>
  
  <div class="md-footer-meta md-typeset">
    <div class="md-footer-meta__inner md-grid">
      <div class="md-footer-copyright">
        
          <div class="md-footer-copyright__highlight">
            Copyright © 2020 WoltLab GmbH
          </div>
        
        Made with
        <a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
          Material for MkDocs
        </a>
        
      </div>
      <div class="md-footer-copyright">
	<a href="https://www.woltlab.com/legal-notice/">Legal Notice</a> 
	<a href="https://www.woltlab.com/privacy-policy/">Privacy Policy</a>
</div>
    </div>
  </div>
</footer>
      
    </div>
    <div class="md-dialog" data-md-component="dialog">
      <div class="md-dialog__inner md-typeset"></div>
    </div>
    <script id="__config" type="application/json">{"base": "../..", "features": [], "translations": {"clipboard.copy": "Copy to clipboard", "clipboard.copied": "Copied to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Search", "search.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.term.missing": "Missing"}, "search": "../../assets/javascripts/workers/search.fb4a9340.min.js", "version": {"provider": "mike"}}</script>
    
    
      <script src="../../assets/javascripts/bundle.5cf3e710.min.js"></script>
      
    
  </body>
</html>