$lastModified )); $cg->sendHeaders(); if ($cg->cacheIsValid) { // we're done exit(); } $title = 'Last-Modified is known : simple usage'; $explain = '

If your content has not changed since a certain timestamp, set this via the the lastModifiedTime array key when instantiating HTTP_ConditionalGet. You can immediately call the method sendHeaders() to set the Last-Modified, ETag, and Cache-Control headers. The, if cacheIsValid property is false, you echo the content.

This script emulates a document that changes every ' .$every. ' seconds.
This is version: ' . date('r', $lastModified) . '

'; require '_include.php'; echo send_slowly(get_content(array( 'title' => $title ,'explain' => $explain )));