WordPress at a glance
function is not described

wp_cache_index_notice() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_index_notice();

Code of wp_cache_index_notice() WPSCache 1.7.1

<?php
function wp_cache_index_notice() {
	global $wp_version, $cache_path;

	if ( false == wpsupercache_site_admin() )
		return false;
	if ( false == get_site_option( 'wp_super_cache_index_detected' ) )
		return false;

	if ( strlen( $cache_path ) < strlen( ABSPATH )
		|| ABSPATH != substr( $cache_path, 0, strlen( ABSPATH ) ) )
		return false; // cache stored outside web root

	if ( get_site_option( 'wp_super_cache_index_detected' ) == 2 ) {
		update_site_option( 'wp_super_cache_index_detected', 3 );
		echo "<div class='error' style='padding: 10px 10px 50px 10px'>";
		echo "<h2>" . __( 'WP Super Cache Warning!', 'wp-super-cache' ) . '</h2>';
		echo '<p>' . __( 'All users of this site have been logged out to refresh their login cookies.', 'wp-super-cache' ) . '</p>';
		echo '</div>';
		return false;
	} elseif ( get_site_option( 'wp_super_cache_index_detected' ) != 3 ) {
		echo "<div id='wpsc-index-warning' class='error notice' style='padding: 10px 10px 50px 10px'>";
		echo "<h2>" . __( 'WP Super Cache Warning!', 'wp-super-cache' ) . '</h2>';
		echo '<p>' . __( 'Your server is configured to show files and directories, which may expose sensitive data such as login cookies to attackers in the cache directories. That has been fixed by adding a file named index.html to each directory. If you use simple caching, consider moving the location of the cache directory on the Advanced Settings page.', 'wp-super-cache' ) . '</p>';
		echo "<p><strong>";
		_e( 'If you just installed WP Super Cache for the first time, you can dismiss this message. Otherwise, you should probably refresh the login cookies of all logged in WordPress users here by clicking the logout link below.', 'wp-super-cache' );
		echo "</strong></p>";
		if ( -1 == version_compare( $wp_version, '4.0' ) ) {
			echo '<p>' . __( 'Your site is using a very old version of WordPress. When you update to the latest version everyone will be logged out and cookie information updated.', 'wp-super-cache' ) . '</p>';
		} else {
			echo '<p>' . __( 'The logout link will log out all WordPress users on this site except you. Your authentication cookie will be updated, but you will not be logged out.', 'wp-super-cache' ) . '</p>';
		}
		echo "<a id='wpsc-dismiss' href='#'>" . __( 'Dismiss', 'wp-super-cache' ) . "</a>";
		if ( 1 == version_compare( $wp_version, '4.0' ) ) {
			echo "	| <a href='" . wp_nonce_url( admin_url( '?action=wpsclogout' ), 'wpsc_logout' ) . "'>" . __( 'Logout', 'wp-super-cache' ) . "</a>";
		}
		echo "</div>";
?>
		<script  type='text/javascript'>
		<!--
			jQuery(document).ready(function(){
				jQuery('#wpsc-dismiss').click(function() {
						jQuery.ajax({
							type: "post",url: "admin-ajax.php",data: { action: 'wpsc-index-dismiss', _ajax_nonce: '<?php echo wp_create_nonce( 'wpsc-index-dismiss' ); ?>' },
							beforeSend: function() {jQuery("#wpsc-index-warning").fadeOut('slow');},
						});
				})
			})
		//-->
		</script>
<?php
	}
}