Fires once the requested HTTP headers for caching, content type, etc. have been sent.
$wpWPwp-includes/class-wp.php:590WP::send_headers() * Fires once the requested HTTP headers for caching, content type, etc. have been sent. * * @since 2.1.0 * * @param WP $wp Current WordPress environment instance (passed by reference). */ do_action_ref_array( 'send_headers', array( &$this ) ); } /** * Sets the query string property based off of the query variable property. * * The {@see 'query_string'} filter is deprecated, but still works. Plugins shouldIntroduced in 2.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.