TLDR
The idea of filters and actions still unclear to me. I decided to solve this problem once and for all. I'll share with you what I found out about WordPress' filters. The first one is a tag and the second is a function. Add_filter accepts two parameters: tag and function. When apply_filters run on a particular tag, it will call all functions that added to that tag. You can add as many functions to a filter tag as many times as you like.via the TL;DR App
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Written by dat-tran | I'm a developer. I love to learn new things. I write about WordPress at http://binarycarpenter.com/