types of hooks in WordPress…

Hooks allow user to create WordPress theme or plugin with shortcode without changing the original core files.

two types of hooks:

1) Action hooks
2) Filter hooks

1. Action hooks :
Action hooks allow you to insert an additional code from an outside resource.
For Example:
Go to the Link CLICK HERE. You can see action hook example used for redirection for custom login page.

2. Filter hooks
Filter hooks will only allow you to add a content or text at the end of the post.
For example:
We want to change the Excerpt length. then we have to use the Filter Hook

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