In a project I am working on I wanted to be able to do a redirect that would allow output to be displayed to the user before redirecting; but I didn’t want to use Javascript.
The CI redirect function in the URL helper did the majority of the work; all I had to do was make a couple of slight modifications.
As you can see in the original code
if ( ! function_exists('redirect'))
{
function redirect($uri = '', $method = 'location', $http_response_code = 302)
{
if ( ! preg_match('#^https?://#i', $uri))
{
$uri = site_url($uri);
}
switch($method)
{
case 'refresh': header("Refresh:0;url=".$uri);
break;
default: header("Location: ".$uri, TRUE, $http_response_code);
break;
}
exit;
}
}
The function simply exits the entire script and doesn’t allow for you to show any output, nor give it any kind of delay.
For my solution I created MY_url_helper.php in applications/helpers with the following:
/**
* Header Redirect
*
*
* Header redirect in two flavors
* For very fine grained control over headers, you could use the Output
* Library's set_header() function.
*
* @access public
* @param string the URL
* @param string the method: location or redirect
* @param int the response code to be sent to the browser
* @param int time in seconds to delay the redirect
* @param bool true/false if the function should exit the CI kernel
* @return string
*/
if ( ! function_exists('redirect')) {
function redirect($uri = '', $method = 'location', $http_response_code = 302,$time=0,$exit=true) {
if ( ! preg_match('#^https?://#i', $uri)) {
$uri = site_url($uri);
}
switch($method) {
case 'refresh':
header("Refresh:$time;url=".$uri);
break;
default: header("Location: ".$uri, TRUE, $http_response_code);
break;
}
if($exit === false) // i chose to use false here to make sure the programmer actually enters false in the function call.
return;
else
exit;
}
}
Simple enough. By default the function will redirect in 0 seconds, exit and not break any existing usage. My desire for this functionality came from wanting to forward a user automatically to their control panel the first time they ever logged into my site, while also giving them the ability to override that by clicking elsewhere on the page.