Sometimes you may want to write code that triggers a hook in the homepage of your WordPress site. You try using this code:
// Wrong way if you want to use a hook
// DO NOT USE THIS
if ( is_home() || is_front_page() ) {
// Add a hook (filter/action) here
}
It can not work because these functions can be really triggered in WordPress template files only. More specifically, they can only be triggered after the main WordPress query is run.
A simple workaround looks like this and actually it can apply to any site, not just WordPress:
// Correct way if you want to use a hook
if ( $_SERVER[ 'REQUEST_URI'] === '/' ) {
// Add a hook (filter/action) here
}