How do you put a filter on a hook?
How do you put a filter on a hook? Adding Filter Hooks You have to first declare a function which filters data, and then register it using the 'apply_filter' function. Since a filter is basically used to modify data, a filter functions takes a value to be filtered as the parameter, and returns the modified value. What is filter hook? In WordPress theme and development, Hooks are functions that can be applied to an Action or a Filter in WordPress. Actions are functions performed when a certain event occurs in WordPress. Filters allow you to modify certain functions. Arguments used...