From 5b346915712a4643ddfb4129da714b8bf45488f7 Mon Sep 17 00:00:00 2001
From: Ulrich Block <ulrichblock@users.noreply.github.com>
Date: Tue, 10 Sep 2013 17:39:06 +0200
Subject: [PATCH] Update index-wp-redis.php
---
index-wp-redis.php | 95 +++++++++++++++++++++++-----------------------
1 file changed, 48 insertions(+), 47 deletions(-)
diff --git a/index-wp-redis.php b/index-wp-redis.php
index c0fb905..d59c3c6 100644
--- a/index-wp-redis.php
+++ b/index-wp-redis.php
@@ -9,11 +9,15 @@ function getMicroTime($t)
return ((float) $usec + (float) $sec);
}
-$seconds_cache_redis = 60 * 60 * 12; // 12 hours by default, you can change in this in wp-admin options page
-$ip_of_your_website = '127.0.0.1'; //You must set this to the IP of your website
-$secret_string = "changeme";
+// 12 hours by default, you can change in this in wp-admin options page
+$seconds_cache_redis = 60 * 60 * 12;
+
+//You must set this to the IP of your website
+$ip_of_your_website = '127.0.0.1';
+
/*This is if you want to manually refresh the cache
ex: http://example.com/sample-post?refresh=changeme */
+$secret_string = "changeme";
// so we don't confuse the cloudflare server
if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
@@ -21,9 +25,7 @@ if (isset($_SERVER['HTTP_CF_CONNECTING_IP'])) {
}
define('WP_USE_THEMES', true);
-$current_url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
-$current_url = str_replace("?refresh=$secret_string", '', $current_url); //clean up the URL
-$current_url = str_replace("&refresh=$secret_string", '', $current_url);
+$current_url = str_replace(array("?refresh=${secret_string}","&refresh=${secret_string}"), '', "http://${_SERVER['HTTP_HOST']}${_SERVER['REQUEST_URI']}"); //clean up the URL
$redis_key = md5($current_url);
try {
@@ -31,8 +33,7 @@ try {
if (class_exists('Redis')) {
$redis = new Redis();
- // Sockets can be used as well '/tmp/redis.sock'
- // documentation can be found at https://github.com/nicolasff/phpredis/#connection
+ // Sockets can be used as well. Documentation @ https://github.com/nicolasff/phpredis/#connection
$redis->connect('127.0.0.1');
} else // Fallback to predis5.2.php
@@ -40,55 +41,55 @@ try {
include("wp-content/plugins/wp-redis-cache/predis5.2.php"); //we need this to use Redis inside of PHP
$redis = new Predis_Client();
}
-} catch (Exception $e) {
- $redisError=true;
-}
-
-//Either manual refresh cache by adding ?refresh=secret_string after the URL or somebody posting a comment
-if (!isset($redisError) && (isset($_GET['refresh']) || $_GET['refresh'] == $secret_string || ($_SERVER['HTTP_REFERER'] == $current_url && $_SERVER['REQUEST_URI'] != '/' && $_SERVER['REMOTE_ADDR'] != $ip_of_your_website))) {
-
- $redis->del($redis_key);
- require('./wp-blog-header.php');
-
- // This page is cached, lets display it
-} else if ($redis->exists($redis_key)) {
- $html_of_page = $redis->get($redis_key);
- echo $html_of_page;
-
- // If the cache does not exist lets display the user the normal page without cache, and then fetch a new cache page
-} else if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website && strstr($current_url, 'preview=true') == false) {
- $isPOST = ($_SERVER['REQUEST_METHOD'] === 'POST') ? 1 : 0;
-
- $loggedIn = preg_match("/wordpress_logged_in/", var_export($_COOKIE, true));
- if ($isPost == 0 && $loggedIn == 0) {
- ob_start();
+ //Either manual refresh cache by adding ?refresh=secret_string after the URL or somebody posting a comment
+ if (isset($_GET['refresh']) || $_GET['refresh'] == $secret_string || strpos($_SERVER['REQUEST_URI'],"refresh=${secret_string}")!==false || ($_SERVER['HTTP_REFERER'] == $current_url && $_SERVER['REQUEST_URI'] != '/' && $_SERVER['REMOTE_ADDR'] != $ip_of_your_website)) {
+
+ $redis->del($redis_key);
require('./wp-blog-header.php');
- $html_of_page = ob_get_contents();
- ob_end_clean();
+
+ // This page is cached, lets display it
+ } else if ($redis->exists($redis_key)) {
+ $html_of_page = $redis->get($redis_key);
echo $html_of_page;
- $usr_seconds = get_option('wp-redis-cache-seconds'); //if the user has the seconds defined in the admin section use it
- if (isset($usr_seconds) && is_numeric($usr_seconds)) {
- $seconds_cache_redis = $usr_seconds;
- }
+ // If the cache does not exist lets display the user the normal page without cache, and then fetch a new cache page
+ } else if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website && strstr($current_url, 'preview=true') == false) {
+
+ $isPOST = ($_SERVER['REQUEST_METHOD'] === 'POST') ? 1 : 0;
- if (strlen($html_of_page) > 5000) { //prevents caching error pages
- $redis->setex($redis_key, $seconds_cache_redis, $html_of_page);
+ $loggedIn = preg_match("/wordpress_logged_in/", var_export($_COOKIE, true));
+ if ($isPost == 0 && $loggedIn == 0) {
+ ob_start();
+ require('./wp-blog-header.php');
+ $html_of_page = ob_get_contents();
+ ob_end_clean();
+ echo $html_of_page;
+
+ //if the user has the seconds defined in the admin section use it
+ $usr_seconds = get_option('wp-redis-cache-seconds');
+ if (isset($usr_seconds) && is_numeric($usr_seconds)) {
+ $seconds_cache_redis = $usr_seconds;
+ }
+
+ // When a page displays after an "HTTP 404: Not Found" error occurs, do not cache
+ if (!is_404()) {
+ $redis->setex($redis_key, $seconds_cache_redis, $html_of_page);
+ }
+ } else //either the user is logged in, or is posting a comment, show them uncached
+ {
+ require('./wp-blog-header.php');
}
- } else //either the user is logged in, or is posting a comment, show them uncached
- {
+
+ } else if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website && strstr($current_url, 'preview=true') == true) {
require('./wp-blog-header.php');
}
-
-} else if (($_SERVER['REMOTE_ADDR'] != $ip_of_your_website && strstr($current_url, 'preview=true') == true) || isset($redisError)) {
+ // else { // This is what your server should get if no cache exists //depricated, as the ob_start() is cleaner
+ // require('./wp-blog-header.php');
+ // }
+} catch (Exception $e) {
require('./wp-blog-header.php');
}
- // else { // This is what your server should get if no cache exists //depricated, as the ob_start() is cleaner
- // require('./wp-blog-header.php');
-// }
-
-
if ($_SERVER['REMOTE_ADDR'] != $ip_of_your_website) {
// How long did it take to load the page? (CloudFlare may strip out comments)
--
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