<?php
/**
* This file is part of the PageCache package.
*
* @author Muhammed Mamedov <[email protected]>
* @copyright 2016
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
*
* This demo demonstrates basic caching functionality of PageCache.
*
* Two versions of this page will be saved.
* If your cache directory is cache, then look for cache/54/3/668.. and cache/97/52/ead.. files.
*
* Despite that URL doesn't change (PageCache DefaultStrategy doesn't support $_POST()), PageCache is able to
* save two different versions of the page based on $_SESSION data.
*
* enableSession() is useful if you are going to cache a dynamic PHP application where you use $_SESSION
* for various things, like user login and etc.
*
*
* NOTE: If you want to cache only URLs before user login or other session manipulations, you could put
* PageCache call inside if(!isset($_SESSION[..])) { //run PageCache only on pages without certain Session variable }
*
*/
require_once __DIR__ . '/../vendor/autoload.php';
/**
* session is started only when "Enable session" button is pressed
*/
if (isset($_POST['withsessions']) && $_POST['withsessions'] == '1') {
session_start();
//sample session data
$_SESSION['demo_session'] = array('my val1', 'my val2');
$_SESSION['user'] = 12;
$_SESSION['login'] = true;
}
$cache = new PageCache\PageCache();
//cache path
$cache->config()->setCachePath(__DIR__ . '/cache/');
//Disable line below and you will see only 1 cache file generated,
// no differentiation between session and without session calls
//
//use session support in cache
//
$cache->config()->setUseSession(true);
//do disable session cache uncomment this line, or comment line above and see
//$cache->config()->setUseSession(false);
//enable log
//$cache->config()->setEnableLog(true);
//$cache->config()->setLogFilePath(__DIR__.'/log/cache.log');
//start cache;
$cache->init();
echo 'Everything below is cached, including this line<hr>';
?>
<html xmlns="http://www.w3.org/1999/html">
<head>
<style type="text/css">
button {
margin: 0;
padding: 10px;
font-weight: bold;
}
fieldset {
margin-bottom: 10px;
background-color: #eee;
}
form {
float: left;
margin: 0;
margin-right: 20px;
padding: 20px;
}
</style>
</head>
<body>
<h1>Demo using Session Support</h1>
Click on the links below to see how PageCache works with sessions. Although page URL doesn't change, PageCache is able
to cache 2 different version of this page based on Session variables.
<br/><br>
<fieldset>
<form method="post" action="">
<input type="hidden" value="1" name="withsessions">
<button type="submit">Enable session cache</button>
</form>
<form method="post" action="">
<input type="hidden" value="0" name="withsessions">
<button type="submit">No session cache</button>
</form>
</fieldset>
<?php
/**
* Print session data if present
*/
if (isset($_SESSION['demo_session'])) {
echo '<b>SESSION IS ENABLED. Session contents:</b> <fieldset><pre>';
print_r($_SESSION);
echo '</pre></fieldset>';
} else {
echo '<fieldset>No session data</fieldset>';
}
?>
<br>
<h3 style="color: red">This is a Session demo PageCache page that is going to be cached.</h3>
<h3>Default cache expiration time for this page is 20 minutes. You can change this value in your <i>conf.php</i>
and passing its file path to PageCache constructor, or by calling <i>setExpiration()</i> method.</h3>
<h3 style="color: green;">This is a dynamic PHP <i>date('H:i:s')</i>
call, note that time doesn't change on refresh: <?php echo date('H:i:s'); ?>.</h3>
<br>
<h4>Check examples/cache/ directory to see cached content.
Erase this file to regenerate cache, or it will automatically be regenerated in 20 minutes.</h4>
</body>
</html>
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