WP_Hook::offsetSet() WordPress Method

The WP_Hook::offsetSet() method is used to add a new callback to a WordPress hook. The first parameter is the name of the hook, and the second parameter is the callback function.

WP_Hook::offsetSet( $offset,  $value ) #

	public function offsetSet( $offset, $value ) {
		if ( is_null( $offset ) ) {
			$this->callbacks[] = $value;
		} else {
			$this->callbacks[ $offset ] = $value;
		}
	}