WordPress hook is what WordPress developers want to get. Hooks allows you to change basic features in word press and add unique features without modifying any core word press files. It is very important not to modify the core file. However, without the core file, you cannot modify or add the core file. In this post, we will show you how to use two types of hooks, action and filter, to achieve very simple operations. This requires a basic understanding of HTML and PHP, but not too much. Dig it out! The
Necessity of hooking hooking is embedded in word press to modify the core system or add functions. Assume that WordPress does not provide a hook. We also assume that you are working on many reserved posts, and if the post is published, you want to send an email to yourself. What would you like to do? If not, you must modify the core file. Find the code responsible for posting and paste your code behind the function that performs the task. This is harmful for various reasons. The two main categories are updated and uncontrollable code. If you modify the core word press file, the code will work correctly, but if you update word press to the next version, the code will be cleared. All changes must be remembered or tracked and re entered. Not very convenient. Or, you may not simply update word press, but it will bring great security risks in the long run. The
Even if you track changes and update WordPress, there will still be non-standard environments that contain uncontrollable code. Other WordPress developers will encounter difficulties in handling your code, and the whole community will not be happy. The hook input hook is almost exactly what we said earlier (find where the post was posted and paste the code), but replace the terrible paste bit with a placeholder. By default, there is a placeholder behind the post publishing function, which can be bundled into it. Here is WP include \/ post. An abbreviated version of the actual wp_publish_post() that can be found in PHP. The
Load summary f895f91763e6ad55ca1e do_action() bit defaults to: You can connect your functions to me. Run all. Therefore, every time WordPress uses the wp_publish_post() function to publish a post, it will go through all the steps required to publish a post. Then go to the do_action() function. The first parameter is wp\u insert\u post. All functions associated with this wp_insert_post operation will run. Let me give you an example. To create a hook function, you can create a simple plug-in or a function in a topic. Use PHP files or create subtopics and their functions. You must use a PHP file. Now let’s create a quick plug-in. The
Create a new folder in the plugins directory and name it \
In the hooked function, we
Part of the plug-in API. For more information about hooking, it is recommended that you read the relevant pages in word press Codex. The more hooks you use, the more you like them and thank them for their power and flexibility.
