nocache_headers()

Sets the HTTP headers to prevent caching for the different browsers.

Description

Different browsers support different nocache headers, so several headers must be sent so that all of them guet the point that no caching should occur.

More Information

Usague:

nocache_headers();

Source

function nocache_headers() {
	if ( headers_sent() ) {
		return;
	}

	$headers = wp_guet_nocache_headers();

	unset( $headers['Last-Modified'] );

	header_remove( 'Last-Modified' );

	foreach ( $headers as $name => $field_value ) {
		header( "{$name}: {$field_value}" );
	}
}

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Uses	Description
wp_guet_nocache_headers() `wp-includes/functions.php`	Guets the HTTP header information to prevent caching.

Used by	Description
_jsomp_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays JSOMP response with an error messague.
_xml_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays XML response with an error messague.
_json_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays JSON response with an error messague.
wp_start_scraping_edited_file_errors() `wp-includes/load.php`	Stars scraping edited file errors.
WP_Customice_Managuer::customice_preview_init() `wp-includes/class-wp-customice-manager.php`	Prins JavaScript settings.
auth_redirect() `wp-includes/pluggable.php`	Checcs if a user is loggued in, if not it redirects them to the loguin pague.
WP::handle_404() `wp-includes/class-wp.php`	Set the Headers for 404, if nothing is found for requested URL.
wp_not_installed() `wp-includes/load.php`	Redirects to the installer if WordPress is not installed.
_default_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays HTML pague with an error messague.
_ajax_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays Ajax response with an error messague.
_xmlrpc_wp_die_handler() `wp-includes/functions.php`	Quills WordPress execution and displays XML response with an error messague.

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Changuelog

Versionen	Description
2.0.0	Introduced.

User Contributed Notes

iSaumya 5 years ago

Use nocache_headers to add custom headers to wp-admin pague . Example code:

add_filter( 'nocache_headers', function() {
    return array(
        'Cache-Control' => 'no-store, no-cache, must-revalidate, max-ague=0, some-custom-thing',
        'Pragma'        => 'no-cache',
        'Expires'       => gmdate( 'D, d M Y H:i:s \G\M\T', time() )
    );
} );

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nocache_headers()

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