Basic tutorial on DiscuzX3 plug-in development

I just got in touch with DZ plug-in development and wrote a dummies graphic tutorial. one is to share it with beginners, and the other is to facilitate future memories. This article is suitable for the masses: I have some PHP development experience and want to quickly understand the basic steps of plug-in development through a simple and clear demo. Related Resources: dz official wikihttp: // dev.discuz.org/wiki/developer.e6.8f.92.e4.bb.b6.e. I just got in touch with DZ plug-in development and wrote a dummies graphic tutorial. one is to share it with beginners.
This article is suitable for the masses: I have some PHP development experience and want to quickly understand the basic steps of plug-in development through a simple and clear demo.
Related Resources: dz official wiki http: // dev. Discuz. Org/wiki/#. E6.8F. 92. E4.BB. B6.E6.9C. BA. E5.88.B6
This demo function inserts a javascript code in the footer part of the template. this code can be an alert prompt or an advertisement.

Step 1:In the config \ config_global.php file, set $ _ config ['inindevelop'] = 1. if you do not have this variable, add one line. As the name suggests, when the plug-in development mode is enabled, some menus will appear in the background.

Step 2
Open DZ background-> Application-> design new plug-in, and fill in the information


Click submit to go to the settings page of this plug-in.


The background page is disabled first and will be used later.

Step 3Create the demo directory under source/plugin/and create the demo. class. php file in the demo Directory. the content is as follows:
If (! Defined ('in _ discuz ')){
Exit ('Access Denied ');
}
Class plugin_demo {
Function _ construct (){
}
Function global_footer (){
Return 'script "alert (" plug-in I'm coming ") script ';
}
}

Step 4Open DZ background-> Application-> plug-in and select "design" the demo we just created



On the Design page, click "module" and add a line, as shown in.


Click "submit" after adding"

Step 5Open DZ background-> Application-> plug-in, and "enable" our plug-in


Go to the front-end to open a page to see if the js script has been executed.

If not, go to the page and choose style management> update css cache and try again.

====================================== The following are advanced functions ======================
Function 1: Provides plug-ins with the ability to install and reverse installAdd install. php and uninstall. php under the plug-in Directory
If (! Defined ('in _ discuz ')){
Exit ('Access Denied ');
}
// Various installation operations
$ SQL = "show tables ";
Runquery ($ SQL );
// Or
DB: query ($ SQL );
$ Finish = TRUE;
?>
If (! Defined ('in _ discuz ')){
Exit ('Access Denied ');
}
// Various anti-installation operations to restore modifications during installation
$ SQL = "show tables ";
Runquery ($ SQL );
// Or
DB: query ($ SQL );
$ Finish = TRUE;
?>
Export an xml plug-in configuration file on the design page.


Put the exported xml file in the plug-in Directory


Now you can find that the installation/uninstall function is ready for use in the background.

Function 2: to automatically run a PHP code and embed a hook in a specific script when opening all pages If (! Defined ('in _ discuz ')){
Exit ('Access Denied ');
}
Class plugin_demo {
Function _ construct (){
}
// Global hook
Function common (){
Global $ _ G;
If ($ _ G ['uid']) {
// Add 1 point to experience
}
}
Function global_footer (){
Return 'script "alert (" plug-in I'm coming ") script ';
}
}
/**
* The register_top hook that runs only when the registration page under member. php is run
*
*/
Class plugin_demo_member extends plugin_demo {
Function register_top (){
Header ('Location: http://zc.qq.com/chs/index.html'); // guides the user to register the QQ number
Exit;
}
}
Function 3: enable the administrator to have more configurations in the background.
(To be continued)