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Write Plug-ins/Hooks
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Makale: vBulletin 3 Makaleleri, yazan vB.Org Poster 20 Jan 2018, 19:28

This is your basic guide to making plug-ins and hooks, as we are all coming over from the 'hack the files' mentality I am posting this thread more for people that are used to hacking the 3.0.x source code and looking to port modifications. Although a newbie should be able to come away with a good understanding of how to do this to .

Things to consider

Ok before we get started here are a few things to keep in mind. First and foremost plug-ins are stored in the database, serlized, unserlized and evaled on page generation. If you code preforms badly with such a wrapper forget making a plug-in and just hack it, trust me you'll thank yourself for it when your forum gets large.

Second thing, hooks will not get you into every corner of the code. Some things will always be done best with a hack. For example if you are looking to add something but need to query the db for some extra data and want to avoid and extra query (in other words you are going to modify an existing one with a join or such) forget it and hack it in, there are no hooks that let you modify existing queries.

Last but not least hooks are not magic, don't add a million of them and expect your forum to run as fast as it did when you first installed it. Only plug-in/hack-in what you really need!

Ok enough with the boring stuff, lets add our first plug-in!

Basics:

First thing you need to do is make sure plug-ins are enabled, you can find this option in the admin cp by browsing to vBoptions -> Select Plugin/Hook System from menu -> Set Enable Plugin/Hook System to yes.

Now head to the add plug-in page located at
Kod Blok Kilitli:      (Kayıt veya giriş yapmalısın)  
Engellenmiş, kayıtlı olmayan veya onay bekleyen kişiler kodlara erişemezler.

Lets go over what all these options mean:

Hook Location: This is where the php code will be executed at, hook locations at defined all across vBulletin. You can find them by opening and php file and searching for the var $hook. When you find a bit of php code like this you have found a hook:


Kod Blok Kilitli:      (Kayıt veya giriş yapmalısın)  
Engellenmiş, kayıtlı olmayan veya onay bekleyen kişiler kodlara erişemezler.

See that bit fetch_hook('showthread_postbit_create')? Well the text "showthread_postbit_create" is the name of this hook, if you look in the drop down you will find that listed in there somewhere. Incase you are wondering that hook is located in showthread.php at line 1012

Title: This is the title of your plug-in, use a good name because this is the only thing you have to identify the plug-in in the plug-in manager.

Plugin PHP Code: Can you guess? This is where you put your custom php code, on page generation it is executed at the hook location in the .php files. Note that you do not need <?php ?> tags here, in other words:

wrong:


Kod Blok Kilitli:      (Kayıt veya giriş yapmalısın)  
Engellenmiş, kayıtlı olmayan veya onay bekleyen kişiler kodlara erişemezler.

Right:


Kod Blok Kilitli:      (Kayıt veya giriş yapmalısın)  
Engellenmiş, kayıtlı olmayan veya onay bekleyen kişiler kodlara erişemezler.

Plugin is Active: Allows you to turn the plug-in on/off without removing it. If set to 'yes' php code is ran on page execution.


Tips

At first approach coding the plug-in like a hack.

Open the php file you would normally edit and get your mind around the new code.

Once you have a good understanding of the new code you should start looking for where you need to add your custom php. Once you find the right location in the code start looking for a nearby hook, if you don't see one you can work with you are out of luck!

Once you find your hook note its name and apply your changes in the admincp, from here on out you are on your own

[Source]: İçerik Kaynağı

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