Created
October 30, 2015 09:18
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| <?php | |
| error_reporting(E_ALL & ~E_WARNING); | |
| // cache time in seconds | |
| $cache_time = 5 * 60; // 5 mins | |
| $time = floor(time() / $cache_time) * $cache_time; | |
| // Getting headers sent by the client. | |
| $headers = apache_request_headers(); | |
| // Checking if the client is validating his cache and if it is current. | |
| if (isset($headers['If-Modified-Since']) && (strtotime($headers['If-Modified-Since']) == $time)) { | |
| // Client's cache IS current, so we just respond '304 Not Modified'. | |
| header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT', true, 304); | |
| } else { | |
| // Image not cached or cache outdated, we respond '200 OK' and output the image. | |
| header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT', true, 200); | |
| } | |
| ?> | |
| hello world <?php echo time(); ?> |
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