CodeIgniter：如何全局禁用缓存？

Question

My clients's website is done with CodeIgniter. Problem is: any time I make some changes, I need to empty the 'cache' folder.

I know you can disable cache in a controller:

 $this->output->set_header('Last-Modified: ' . gmdate("D, d M Y H:i:s") . ' GMT');('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
    $this->output->set_header('Pragma: no-cache');
    $this->output->set_header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); 
    $this->output->set_header

But how to disable it Globally to the WHOLE website ?

Answer 1

you can globally disable whole website cache by using htaccess

<FilesMatch "\.(html|htm|js|css|php)>
   FileETag None
   Header unset ETag
   Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
   Header set Pragma "no-cache"
   Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</FilesMatch>

Answer 2

Create the file /application/core/My-Output.php that has the following lines:

class MY_Output extends CI_Output {

function _display_cache(&$CFG, &$URI)
{
    /* Disable Globally */
    return FALSE;

    /* OR - Disable for a specific IP Address */
    if ( ($_SERVER['REMOTE_ADDR'] == '127.0.0.1') || (eregi("192.168.", $_SERVER['REMOTE_ADDR'])) )
    {
        return FALSE;
    }

    /* OR - disable based on a cookie value */
    if ( (isset($_COOKIE['nocache'])) && ( $_COOKIE['nocache'] > 0 ) )
    {
        return FALSE;
    }

    /* Call the parent function */
    return parent::_display_cache($CFG,$URI);
}

This will override the global output handler in your CodeIgniter application in any way you desire.