wp-includes/plugin.php:648Retrieves the name of the current action hook.
string|falsefunction current_action() { return current_filter();}Introduced in 3.9.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
string to string|false.verified against sourcesrc/wp-includes/plugin.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.