/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '') {
if (w3_is_xml($buffer) && $this->_can_cache2()) {
$compression = $this->_get_compression();
$compressions = $this->_get_compressions();
if ($this->_enhanced_mode) {
$is_404 = false;
$headers = array();
} else {
$is_404 = function_exists('is_404') ? is_404() : false;
$headers = $this->_get_cached_headers();
}
$time = time();
$cache =& $this->_get_cache();
foreach ($compressions as $_compression) {
$_page_key = $this->_get_page_key($_SERVER['REQUEST_URI'], $_compression);
/**
* Encode content
*/
switch ($_compression) {
case false:
$_content = $buffer;
break;
case 'gzip':
$_content = gzencode($buffer);
break;
case 'deflate':
$_content = gzdeflate($buffer);
break;
}
/**
* Store cache data
*/
if ($this->_enhanced_mode) {
$cache->set($_page_key, $_content);
} else {
$_data = array('404' => $is_404, 'headers' => $headers, 'time' => $time, 'content' => $_content);
$cache->set($_page_key, $_data, $this->_lifetime);
}
if ($compression == $_compression) {
$page_key = $_page_key;
$buffer = $_content;
}
}
/**
* Calculate content etag
*/
$etag = md5($buffer);
/**
* Send headers
*/
$this->_send_headers($is_404, $time, $etag, $compression, $headers);
/**
* Append debug info
*/
if ($this->_debug) {
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info($page_key, true, '', false, $time_total);
$this->_append_content($buffer, "\r\n\r\n" . $debug_info, $compression);
}
} elseif ($this->_debug) {
/**
* Append debug info
*/
$page_key = $this->_get_page_key($_SERVER['REQUEST_URI'], false);
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info($page_key, false, $this->cache_reject_reason, false, $time_total);
$this->_append_content($buffer, "\r\n\r\n" . $debug_info, false);
}
}
return $buffer;
}
/**
* Get from the cache
*
* @param string $id
* @param string $group
* @return mixed
*/
function get($id, $group = 'transient')
{
if ($this->_debug) {
$time_start = w3_microtime();
}
$key = $this->_get_cache_key($id, $group);
list($fragment_group, $fragment_group_expiration) = $this->_fragment_group($id);
$internal = isset($this->cache[$fragment_group . $group][$key]);
if ($internal) {
$value = $this->cache[$fragment_group . $group][$key];
} elseif ($this->_caching && !in_array($group, $this->nonpersistent_groups)) {
$cache = $this->_get_cache(null, $group);
$v = $cache->get($key, $fragment_group);
if (is_array($v) && $v['content'] != null) {
$value = $v['content'];
} else {
$value = false;
}
} else {
$value = false;
}
if ($value === null) {
$value = false;
}
if (is_object($value)) {
$value = clone $value;
}
$this->cache[$fragment_group . $group][$key] = $value;
$this->cache_total++;
if ($value !== false) {
$cached = true;
$this->cache_hits++;
} else {
$cached = false;
$this->cache_misses++;
}
/**
* Add debug info
*/
if ($this->_debug) {
$time = w3_microtime() - $time_start;
$this->time_total += $time;
if (!$group) {
$group = 'transient';
}
$this->debug_info[] = array('id' => $id, 'group' => $group, 'cached' => $cached, 'internal' => $internal, 'data_size' => $value ? strlen(serialize($value)) : '', 'time' => $time);
}
return $value;
}
/**
* @param $buffer
* @param $mobile_group
* @param $referrer_group
* @param $encryption
* @param $compression
* @param $content_type
* @return string
*/
private function _debugging_caching(&$buffer, $mobile_group, $referrer_group, $encryption, $compression = '', $content_type = '')
{
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($mobile_group, $referrer_group, $encryption, $compression, $content_type);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(true, '', false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
return $buffer;
}
/**
* Get from the cache
*
* @param string $id
* @param string $group
* @return mixed
*/
function get($id, $group = 'default')
{
if ($this->_debug) {
$time_start = w3_microtime();
}
$key = $this->_get_cache_key($id, $group);
$internal = isset($this->cache[$key]);
if ($internal) {
$value = $this->cache[$key];
} elseif ($this->_caching && !in_array($group, $this->nonpersistent_groups)) {
$cache =& $this->_get_cache();
$value = $cache->get($key);
} else {
$value = false;
}
if ($value === null) {
$value = false;
}
if (is_object($value)) {
$value = nxt_clone($value);
}
$this->cache[$key] = $value;
$this->cache_total++;
if ($value !== false) {
$cached = true;
$this->cache_hits++;
} else {
$cached = false;
$this->cache_misses++;
}
/**
* Add debug info
*/
if ($this->_debug) {
$time = w3_microtime() - $time_start;
$this->time_total += $time;
if (!$group) {
$group = 'default';
}
$this->debug_info[] = array('id' => $id, 'group' => $group, 'cached' => $cached, 'internal' => $internal, 'data_size' => $value ? strlen(serialize($value)) : 0, 'time' => $time);
}
return $value;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$compression = false;
$has_dynamic = $this->_has_dynamic($buffer);
$can_cache = $this->_can_cache2($buffer);
if ($can_cache) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
$compression = $this->_get_compression();
/**
* Don't use compression for debug mode or dynamic tags
* because we need to modify buffer before send it to client
*/
$raw = $this->_debug || $has_dynamic;
if ($raw) {
$compressions = array(false);
} else {
$compressions = $this->_get_compressions();
}
if ($this->_enhanced_mode) {
$is_404 = false;
$headers = array();
} else {
$is_404 = function_exists('is_404') ? is_404() : false;
$headers = $this->_get_cached_headers();
}
$time = time();
$cache =& $this->_get_cache();
/**
* Store different versions of cache
*/
$buffers = array();
foreach ($compressions as $_compression) {
$_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $_compression);
/**
* Compress content
*/
$buffers[$_compression] = $buffer;
$this->_compress($buffers[$_compression], $_compression);
/**
* Store cache data
*/
if ($this->_enhanced_mode) {
$cache->set($_page_key, $buffers[$_compression]);
} else {
$_data = array('404' => $is_404, 'headers' => $headers, 'time' => $time, 'content' => &$buffers[$_compression]);
$cache->set($_page_key, $_data, $this->_lifetime);
}
}
/**
* Change buffer if using compression
*/
if ($compression && isset($buffers[$compression])) {
$buffer =& $buffers[$compression];
}
/**
* Calculate content etag
*/
$etag = md5($buffer);
/**
* Send headers
*/
$this->_send_headers($is_404, $time, $etag, $compression, $headers);
if ($raw) {
if ($this->_debug) {
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $compression);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(true, '', false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* Don't use shutdown function below
*/
if (!$has_dynamic) {
$this->_compress($buffer, $compression);
}
}
} elseif ($this->_debug) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $compression);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(false, $this->cache_reject_reason, false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* We can't capture output in ob_callback
* so we use shutdown function
*/
if ($has_dynamic) {
$this->_shutdown_buffer = $buffer;
$this->_shutdown_compression = $compression;
$buffer = '';
register_shutdown_function(array(&$this, 'shutdown'));
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && $this->_is_cacheable_content_type()) {
$compression = false;
$has_dynamic = $this->_has_dynamic($buffer);
$can_cache = $this->_can_cache2($buffer);
if ($can_cache) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
$compression = $this->_get_compression();
$compressions = $this->_get_compressions();
/**
* Don't use compression for debug mode or dynamic tags
* because we need to modify buffer before send it to client
*/
$raw = $this->_debug || $has_dynamic;
if ($raw) {
$compression = false;
$compressions = array(false);
}
$content_type = '';
$is_404 = function_exists('is_404') ? is_404() : false;
$headers = $this->_get_cached_headers();
if ($this->_enhanced_mode && !$this->_late_init) {
$this->_check_rules_present();
if (isset($headers['Content-Type'])) {
$content_type = $headers['Content-Type'];
}
}
$time = time();
$cache = $this->_get_cache();
/**
* Store different versions of cache
*/
$buffers = array();
$group = '0';
if (!isset($this->_sitemap_matched)) {
$sitemap_regex = $this->_config->get_string('pgcache.purge.sitemap_regex');
if ($sitemap_regex && preg_match('/' . $sitemap_regex . '/', basename($this->_request_uri))) {
$group = 'sitemaps';
$this->_sitemap_matched = true;
}
} elseif ($this->_sitemap_matched) {
$group = 'sitemaps';
}
foreach ($compressions as $_compression) {
$_page_key = $this->_get_page_key($mobile_group, $referrer_group, $encryption, $_compression, $content_type);
/**
* Compress content
*/
$buffers[$_compression] = $buffer;
$this->_compress($buffers[$_compression], $_compression);
/**
* Store cache data
*/
$_data = array('404' => $is_404, 'headers' => $headers, 'time' => $time, 'content' => &$buffers[$_compression]);
$cache->set($_page_key, $_data, $this->_lifetime, $group);
}
/**
* Change buffer if using compression
*/
if ($compression && isset($buffers[$compression])) {
$buffer =& $buffers[$compression];
}
/**
* Calculate content etag
*/
$etag = md5($buffer);
/**
* Send headers
*/
$this->_send_headers($is_404, $time, $etag, $compression, $headers);
if ($raw) {
if ($this->_debug && w3_can_print_comment($buffer)) {
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($mobile_group, $referrer_group, $encryption, $compression, $content_type);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(true, '', false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* Don't use shutdown function below
*/
if (!$has_dynamic) {
$this->_compress($buffer, $compression);
}
}
} elseif ($this->_debug && w3_can_print_comment($buffer)) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($mobile_group, $referrer_group, $encryption, $compression);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(false, $this->cache_reject_reason, false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* We can't capture output in ob_callback
* so we use shutdown function
*/
if ($has_dynamic) {
$this->_shutdown_buffer = $buffer;
$this->_shutdown_compression = $compression;
$buffer = '';
register_shutdown_function(array(&$this, 'shutdown'));
}
}
return $buffer;
}