Files: wp-includes/class-wp-hook.php

Checks if any callbacks have been registered for this hook.

Removes all callbacks from the current filter.

Hooks a function or method to a specific filter action.

Handles resetting callback priority keys mid-iteration.

Unhooks a function or method from a specific filter action.

Normalizes filters set up before WordPress has initialized to WP_Hook objects.

Determines whether an offset value exists.

Retrieves a value at a specified offset.

Sets a value at a specified offset.

Unsets a specified offset.

Returns the current element.

Hooks a function or method to a specific filter action.

Moves forward to the next element.

Handles resetting callback priority keys mid-iteration.

Returns the key of the current element.