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function is not described

_save_post_hook() WP 2.3.0

Deprecated in 3.5.0. It is no longer supported and can be removed in future releases. It is recommended to replace this function with the same one.

Callback formerly fired on the save_post hook. No longer needed.

No Hooks.

Return

Nothing (null).

Usage

_save_post_hook();

Code of save post hook: wp-includes/deprecated.php WP 5.2.2

<?php
function _save_post_hook() {}