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action is not described

deprecated_hook_run action-hook . WP 4.6.0

Fires when a deprecated hook is called.

Usage

add_action( 'deprecated_hook_run', 'action_function_name_7524', 10, 4 );
function action_function_name_7524( $hook, $replacement, $version, $message ){
	// action...
}
$hook(string)
The hook that was called.
$replacement(string)
The hook that should be used as a replacement.
$version(string)
The version of WordPress that deprecated the argument used.
$message(string)
A message regarding the change.

Where the hook is called

_deprecated_hook()
wc_deprecated_hook()
wp-includes/functions.php 4133
do_action( 'deprecated_hook_run', $hook, $replacement, $version, $message );
woocommerce/includes/wc-deprecated-functions.php 69
do_action( 'deprecated_hook_run', $hook, $replacement, $version, $message );

Where the hook is used (in WP core)

Does not used.