Title: 2.2.3 | Developer.WordPress.org

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# New and updated in 2.2.3

Functions

Hooks

Classes

Methods

 * function[_wp_filter_build_unique_id()](https://developer.wordpress.org/reference/functions/_wp_filter_build_unique_id/)
 * Builds a unique string ID for a hook callback function.
 * Used by [3 functions](https://developer.wordpress.org/reference/functions/_wp_filter_build_unique_id/#used-by)
   | Uses [0 functions](https://developer.wordpress.org/reference/functions/_wp_filter_build_unique_id/#uses)
   | Source: [wp-includes/plugin.php:1002](https://github.com/WordPress/wordpress-develop/blob/7.1/src/wp-includes/plugin.php#L1002-L1024)