Removes all of the callback functions from an action hook.

Parameters

$hook_namestringrequired

The action to remove callbacks from.

$priorityint|falseoptional

The priority number to remove them from.

Default:false

Return

More Information

Prior to Version 4.7

• You can’t call this function from within the hook you would like to remove actions from. For example adding an action to wp_footer that calls remove_all_actions('wp_footer') will cause an infinite loop condition because the while loop suddenly doesn’t have a next value. In WordPress 3.8.1 you’ll get a warning message like:
  Warning: next() expects parameter 1 to be array, null given in wp-includes/plugin.php on line 431
• You’ll just need to hook into a hook that’s called before the hook you wish to clear is called.

Since Version 4.7, these limitations have been addressed. Please refer to https://wordpress.org/support/wordpress-version/version-4-7/#for-developers

Source

function remove_all_actions( $hook_name, $priority = false ) {
	return remove_all_filters( $hook_name, $priority );
}

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Changelog