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Daniele Alessandri
3e125c964c
This class makes it easy to use Predis to store PHP sessions on Redis. NOTE: requires PHP >= 5.4.0 or a polyfill for PHP's SessionHandlerInterface.
40 lines
1.6 KiB
PHP
40 lines
1.6 KiB
PHP
<?php
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require 'SharedConfigurations.php';
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// This example demonstrates how to leverage Predis to save PHP sessions on Redis.
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//
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// The value of `session.gc_maxlifetime` in `php.ini` will be used by default as the
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// the TTL for keys holding session data on Redis, but this value can be overridden
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// when creating the session handler instance with the `gc_maxlifetime` option.
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//
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// Note that this class needs PHP >= 5.4 but can be used on PHP 5.3 if a polyfill for
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// SessionHandlerInterface (see http://www.php.net/class.sessionhandlerinterface.php)
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// is provided either by you or an external package like `symfony/http-foundation`.
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if (!interface_exists('SessionHandlerInterface')) {
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die("ATTENTION: the session handler implemented by Predis needs PHP >= 5.4.0 or a polyfill ".
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"for \SessionHandlerInterface either provided by you or an external package.\n");
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}
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// Instantiate a new client just like you would normally do. We'll prefix our session keys here.
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$client = new Predis\Client($single_server, array('prefix' => 'sessions:'));
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// Set `gc_maxlifetime` so that a session will be expired after 5 seconds since last access.
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$handler = new Predis\Session\SessionHandler($client, array('gc_maxlifetime' => 5));
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// Register our session handler (it uses `session_set_save_handler()` internally).
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$handler->register();
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// Set a fixed session ID just for the sake of our example.
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session_id('example_session_id');
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session_start();
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if (isset($_SESSION['foo'])) {
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echo "Session has `foo` set to {$_SESSION['foo']}\n";
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} else {
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$_SESSION['foo'] = $value = mt_rand();
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echo "Empty session, `foo` has been set with $value\n";
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}
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