GUIDE What is PHP callback widget, what does it do

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In XenForo PHP Callbackis a type of dedicated widget that allows you to produce the contents of a widget directly with PHP.
Normal widgets are usually based on templates, HTML, or specific data types; however PHP callback, it allows you to write your own logic and turn the output as you wish.

The following is a more comprehensive, simple and clear explanation:

What Does PHP Callback Widget Provide?

This widget type adds a "calling point" specific to XenForo's widget system.
You define a PHP class and a method within this class;
XenForo calls this method and displays the data that the method returns as a widget.

So:

• You can write your own query (veritabani thread, user, message, custom table...)
• You can make your own calculation
• You can do data manipulation
• You can determine Widget’s HTML output entirely by yourself (usually combined with template)
• Do advanced things that standard widget types do not allow
• Where to use?
  
  XenForo AdminCP Appearance Widgets Add widget
  Widget type list: PHP callback visible.
  
  When adding, you fill in the following fields:
  
  • Callback class full name of PHP class (e.g. AddOn's MyAddon'Widget's MyWidget)
  • Callback method - The method that runs Widget (e.g. rendering)
  • Optional extra parameters
• How Does It Work? (General Logic)
  You write a class:
  

  namespace AddOn\MyAddon\Widget;
  
  class MyWidget
  {
     public static function render(array $widget, array $position, array $params, \XF\Template\Templater $templater)
     {
         // 1) Veri çekersin
         // 2) İşlersin
         // 3) Bir template döndürürsün
  
         return $templater->renderTemplate('my_widget_template', [
             'data' => $veriler
         ]);
     }
  }

  
  
  The XenForo widget system invites this method and shows the rotating result as a widget on the site.
  Advantages
  
  • There is no limit: You can do anything that standard widgets can't.
  • Full control: you're all about how to pull the data, how to process it.
  • Performance friendly: Can be integrated into Cache system.
  • Dynamic content: Member-specific content, statistics, external API, complex calculations...
  • When to Use?
    
  These are the ideal scenarios for PHP callback:
  
  If you want more exclusive content than the standard widget
  If you will extract special data from specific threads, categories
  If you want output that varies according to the user (online/offline, level, badge, etc.)
  If you will receive data from the External API
  If you are going to create a fully custom HTML block
  
  What is not?
  
  • HTML/CSS is not widget
  • Not simple static widget
  • Template-only is not widget
  • "Let the piece of code work" is not the type of "Let the piece of code work" . . . . . .
    In short
  
  The PHP callback widget is the call of a PHP function that is specifically written into the XenForo’s widget system.

 

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