function clear_wp_redis_cache()
{
include_once "predis5.2.php";
//we need this to use Redis inside of PHP
$args = array('post_type' => 'any', 'posts_per_page' => -1);
$wp_query = new WP_Query($args);
// to get all Posts
$redis = new Predis_Client();
// Loop all posts and clear the cache
$i = 0;
while ($wp_query->have_posts()) {
$wp_query->the_post();
$incremented = false;
$permalink = get_permalink();
$redis_key = md5($permalink);
$redis_ssl_key = 'ssl_' . $redis_key;
if ($redis->exists($redis_key) == true) {
$redis->del($redis_key);
$i++;
$incremented = true;
}
if ($redis->exists($redis_ssl_key) == true) {
$redis->del($redis_ssl_key);
if (!$incremented) {
$i++;
}
}
}
echo $i . " of " . $wp_query->found_posts . " posts was cleared in cache";
die;
}
}
} catch (Predis_ClientException $e) {
// catch predis-thrown exception
die("Predis not found on your server or was unable to run. Error message: " . $e->getMessage());
} catch (Exception $e) {
// catch other exceptions
require $wp_blog_header_path;
die("Error occurred. Error message: " . $e->getMessage());
}
}
//Either manual refresh cache by adding ?refresh=secret_string after the URL or somebody posting a comment
if (refreshHasSecret($secret_string) || requestHasSecret($secret_string) || isRemotePageLoad($current_url, $websiteIp)) {
if ($debug) {
echo "<!-- manual refresh was required -->\n";
}
$redis->del($redis_key);
$redis->del("ssl_" . $redis_key);
require $wp_blog_header_path;
//$unlimited = get_option('wp-redis-cache-debug',false);
$seconds_cache_redis = get_option('wp-redis-cache-seconds', 86400);
// This page is cached, lets display it
} else {
if ($redis->exists($redis_key)) {
if ($debug) {
echo "<!-- serving page from cache: key: {$redis_key} -->\n";
}
$cache = true;
$html_of_page = $redis->get($redis_key);
if ($compress) {
$html_of_page = gzuncompress($html_of_page);
}
public static function zsetAddAndReturn(Predis_Client $client, $keyName, array $values, $wipeOut = 0)
{
// $values: array(SCORE => VALUE, ...);
if ($wipeOut == true) {
$client->del($keyName);
}
foreach ($values as $value => $score) {
$client->zadd($keyName, $score, $value);
}
return $values;
}
/**
* Required to pass unit tests
*
* @param string $id
* @return void
*/
public function ___expire($id)
{
$this->_redis->del(self::PREFIX_KEY . $id);
}
/**
* @see sfCache
*/
public function remove($key)
{
return $this->redis->del($this->getKey($key), $this->getKey($key, '_lastmodified'));
}
