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WP_Hook::key()

Returns the key of the current element.

Return

(mixed) Returns current priority on success, or NULL on failure

Source

File: wp-includes/class-wp-hook.php 

public function key() {
		return key( $this->callbacks );
	}

Changelog

Version Description
4.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_hook/key