PHP w3_get_browsercache_rules_cache_path函数代码示例

 /**
  * Check cache rules
  *
  * @return boolean
  */
 function check_rules_cache()
 {
     $path = w3_get_browsercache_rules_cache_path();
     $search = $this->generate_rules_cache();
     return ($data = @file_get_contents($path)) && strstr(w3_clean_rules($data), w3_clean_rules($search)) !== false;
 }

 /**
  * Send support request action
  *
  * @return void
  */
 function action_support_request()
 {
     w3_require_once(W3TC_LIB_W3_DIR . '/Request.php');
     $request_type = W3_Request::get_string('request_type');
     $payment = W3_Request::get_boolean('payment');
     $request_id = W3_Request::get_string('request_id');
     $url = W3_Request::get_string('url');
     $name = W3_Request::get_string('name');
     $email = W3_Request::get_string('email');
     $twitter = W3_Request::get_string('twitter');
     $phone = W3_Request::get_string('phone');
     $subject = W3_Request::get_string('subject');
     $description = W3_Request::get_string('description');
     $templates = W3_Request::get_array('templates');
     $forum_url = W3_Request::get_string('forum_url');
     $wp_login = W3_Request::get_string('wp_login');
     $wp_password = W3_Request::get_string('wp_password');
     $ftp_host = W3_Request::get_string('ftp_host');
     $ftp_login = W3_Request::get_string('ftp_login');
     $ftp_password = W3_Request::get_string('ftp_password');
     $subscribe_releases = W3_Request::get_string('subscribe_releases');
     $subscribe_customer = W3_Request::get_string('subscribe_customer');
     $params = array('request_type' => $request_type, 'payment' => $payment, 'url' => $url, 'name' => $name, 'email' => $email, 'twitter' => $twitter, 'phone' => $phone, 'subject' => $subject, 'description' => $description, 'forum_url' => $forum_url, 'wp_login' => $wp_login, 'wp_password' => $wp_password, 'ftp_host' => $ftp_host, 'ftp_login' => $ftp_login, 'ftp_password' => $ftp_password, 'subscribe_releases' => $subscribe_releases, 'subscribe_customer' => $subscribe_customer);
     $post = $params;
     foreach ($templates as $template_index => $template) {
         $template_key = sprintf('templates[%d]', $template_index);
         $params[$template_key] = $template;
     }
     if (!isset($this->_request_types[$request_type])) {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_type')), false);
     }
     $required = array('bug_report' => 'url,name,email,subject,description', 'new_feature' => 'url,name,email,subject,description', 'email_support' => 'url,name,email,subject,description', 'phone_support' => 'url,name,email,subject,description,phone', 'plugin_config' => 'url,name,email,subject,description,wp_login,wp_password', 'theme_config' => 'url,name,email,subject,description,wp_login,wp_password,ftp_host,ftp_login,ftp_password', 'linux_config' => 'url,name,email,subject,description,wp_login,wp_password,ftp_host,ftp_login,ftp_password');
     if (strstr($required[$request_type], 'url') !== false && $url == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_url')), false);
     }
     if (strstr($required[$request_type], 'name') !== false && $name == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_name')), false);
     }
     if (strstr($required[$request_type], 'email') !== false && !preg_match('~^[a-z0-9_\\-\\.]+@[a-z0-9-\\.]+\\.[a-z]{2,5}$~', $email)) {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_email')), false);
     }
     if (strstr($required[$request_type], 'phone') !== false && !preg_match('~^[0-9\\-\\.\\ \\(\\)\\+]+$~', $phone)) {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_phone')), false);
     }
     if (strstr($required[$request_type], 'subject') !== false && $subject == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_subject')), false);
     }
     if (strstr($required[$request_type], 'description') !== false && $description == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_description')), false);
     }
     if (strstr($required[$request_type], 'wp_login') !== false && $wp_login == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_wp_login')), false);
     }
     if (strstr($required[$request_type], 'wp_password') !== false && $wp_password == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_wp_password')), false);
     }
     if (strstr($required[$request_type], 'ftp_host') !== false && $ftp_host == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_host')), false);
     }
     if (strstr($required[$request_type], 'ftp_login') !== false && $ftp_login == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_login')), false);
     }
     if (strstr($required[$request_type], 'ftp_password') !== false && $ftp_password == '') {
         w3_admin_redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_password')), false);
     }
     /**
      * Add attachments
      */
     $attachments = array();
     $attach_files = array(w3_get_wp_config_path(), w3_cache_blog_dir('log') . '/minify.log', w3_get_pgcache_rules_core_path(), w3_get_pgcache_rules_cache_path(), w3_get_browsercache_rules_cache_path(), w3_get_browsercache_rules_no404wp_path(), w3_get_minify_rules_core_path(), w3_get_minify_rules_cache_path());
     /**
      * Attach config files
      */
     if ($handle = opendir(W3TC_CONFIG_DIR)) {
         while (($entry = @readdir($handle)) !== false) {
             if ($entry == '.' || $entry == '..' || $entry == 'index.html') {
                 continue;
             }
             $attachments[] = W3TC_CONFIG_DIR . '/' . $entry;
         }
         closedir($handle);
     }
     foreach ($attach_files as $attach_file) {
         if ($attach_file && file_exists($attach_file) && !in_array($attach_file, $attachments)) {
             $attachments[] = $attach_file;
         }
     }
     /**
      * Attach server info
      */
     $server_info = print_r($this->get_server_info(), true);
     $server_info = str_replace("\n", "\r\n", $server_info);
     $server_info_path = W3TC_CACHE_TMP_DIR . '/server_info.txt';
     if (@file_put_contents($server_info_path, $server_info)) {
         $attachments[] = $server_info_path;
//.........这里部分代码省略.........

 /**
  * Plugin action links filter
  *
  * @param array $links
  * @return array
  */
 function plugin_action_links($links)
 {
     array_unshift($links, '<a class="edit" href="admin.php?page=w3tc_general">Settings</a>');
     w3_require_once(W3TC_INC_DIR . '/functions/rule.php');
     if (!is_writable(WP_CONTENT_DIR) || !is_writable(w3_get_browsercache_rules_cache_path())) {
         $delete_link = '<a href="' . wp_nonce_url(admin_url('plugins.php?action=w3tc_deactivate_plugin'), 'w3tc') . '">Uninstall</a>';
         array_unshift($links, $delete_link);
     }
     return $links;
 }

 /**
  * @return array
  */
 function remove_rules_no404wp_with_message($verify_config = false, $hide_button = '')
 {
     $ftp_form = null;
     $errors = array();
     $errors_short_form = array();
     $remove = $verify_config ? !$this->_config->get_boolean('browsercache.no404wp') : true;
     if ($remove && $this->check_rules_no404wp()) {
         try {
             $this->remove_rules_no404wp();
         } catch (Exception $e) {
             $errors[] = sprintf('"Do not process 404 errors for static objects with WordPress" feature is still <em>active</em>. To disable it, edit the rules in the server configuration file (<strong>%s</strong>) of the site and remove all lines between and including <strong>%s</strong> and <strong>%s</strong> markers inclusive.%s', w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP, W3TC_MARKER_END_BROWSERCACHE_NO404WP, $hide_button);
             $errors_short_form[] = sprintf('Edit file (<strong>%s</strong>) and remove all lines between and including <strong>%s</strong> and <strong>%s</strong> markers inclusive.', w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP, W3TC_MARKER_END_BROWSERCACHE_NO404WP);
             if (!isset($ftp_form) && $e instanceof FilesystemCredentialException) {
                 $ftp_form = $e->ftp_form();
             }
         }
     }
     return array('errors' => $errors, 'ftp_form' => $ftp_form, 'errors_short_form' => $errors_short_form);
 }

 /**
  * Removes Page Cache core directives
  *
  * @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
  * @throws FileOperationException
  */
 private function rules_wpmu_subfolder_remove($exs)
 {
     w3_remove_rules($exs, w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_MINIFY_CACHE, W3TC_MARKER_END_MINIFY_CACHE);
 }

 /**
  * @return array
  */
 function remove_rules_with_message()
 {
     $ftp_form = null;
     $errors = array();
     $errors_short_form = array();
     if ($this->check_rules()) {
         try {
             $this->remove_rules();
         } catch (Exception $e) {
             $errors[] = sprintf('CDN/CloudFlare added rules that need to be removed. To remove them manually, edit the configuration file (<strong>%s</strong>) and remove all lines between and including <strong>%s</strong> and <strong>%s</strong> markers inclusive.', w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_CDN, W3TC_MARKER_BEGIN_CDN);
             $errors_short_form[] = sprintf('Edit file (<strong>%s</strong>) and remove all lines between and including <strong>%s</strong> and <strong>%s</strong> markers inclusive.', w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_CDN, W3TC_MARKER_BEGIN_CDN);
             if ($e instanceof FilesystemCredentialException) {
                 $ftp_form = $e->ftp_form();
             }
         }
     }
     return array('errors' => $errors, 'ftp_form' => $ftp_form, 'errors_short_form' => $errors_short_form);
 }

 /**
  * Removes cache directives
  *
  * @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
  * @throws FileOperationException
  */
 private function rules_cache_remove($exs)
 {
     w3_remove_rules($exs, w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_BROWSERCACHE_CACHE, W3TC_MARKER_END_BROWSERCACHE_CACHE);
 }

                </li>
            <?php 
    }
    ?>

        <?php 
}
?>

    </ul>

    <h4>WordPress Resources</h4>

    <ul>
        <?php 
$paths = array_unique(array(w3_get_pgcache_rules_core_path(), w3_get_browsercache_rules_cache_path(), w3_get_browsercache_rules_no404wp_path()));
?>

        <?php 
foreach ($paths as $path) {
    if ($path) {
        ?>

        <li>
            <?php 
        echo htmlspecialchars($path);
        ?>
:
            <?php 
        if (file_exists($path)) {
            ?>

 /**
  * Send support request
  *
  * @return void
  */
 function support_request()
 {
     require_once W3TC_LIB_W3_DIR . '/Request.php';
     $request_type = W3_Request::get_string('request_type');
     $payment = W3_Request::get_boolean('payment');
     $request_id = W3_Request::get_string('request_id');
     $url = W3_Request::get_string('url');
     $name = W3_Request::get_string('name');
     $email = W3_Request::get_string('email');
     $twitter = W3_Request::get_string('twitter');
     $phone = W3_Request::get_string('phone');
     $subject = W3_Request::get_string('subject');
     $description = W3_Request::get_string('description');
     $templates = W3_Request::get_array('templates');
     $forum_url = W3_Request::get_string('forum_url');
     $wp_login = W3_Request::get_string('wp_login');
     $wp_password = W3_Request::get_string('wp_password');
     $ftp_host = W3_Request::get_string('ftp_host');
     $ftp_login = W3_Request::get_string('ftp_login');
     $ftp_password = W3_Request::get_string('ftp_password');
     $params = array('request_type' => $request_type, 'payment' => $payment, 'url' => $url, 'name' => $name, 'email' => $email, 'twitter' => $twitter, 'phone' => $phone, 'subject' => $subject, 'description' => $description, 'forum_url' => $forum_url, 'wp_login' => $wp_login, 'wp_password' => $wp_password, 'ftp_host' => $ftp_host, 'ftp_login' => $ftp_login, 'ftp_password' => $ftp_password);
     foreach ($templates as $template_index => $template) {
         $template_key = sprintf('templates[%d]', $template_index);
         $params[$template_key] = $template;
     }
     if (!isset($this->_request_types[$request_type])) {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_type')));
     }
     $required = array('bug_report' => 'url,name,email,subject,description', 'new_feature' => 'url,name,email,subject,description', 'email_support' => 'url,name,email,subject,description', 'phone_support' => 'url,name,email,subject,description,phone', 'plugin_config' => 'url,name,email,subject,description,wp_login,wp_password', 'theme_config' => 'url,name,email,subject,description,wp_login,wp_password,ftp_host,ftp_login,ftp_password', 'linux_config' => 'url,name,email,subject,description,wp_login,wp_password,ftp_host,ftp_login,ftp_password');
     if (strstr($required[$request_type], 'url') !== false && $url == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_url')));
     }
     if (strstr($required[$request_type], 'name') !== false && $name == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_name')));
     }
     if (strstr($required[$request_type], 'email') !== false && !preg_match('~^[a-z0-9_\\-\\.]+@[a-z0-9-\\.]+\\.[a-z]{2,5}$~', $email)) {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_email')));
     }
     if (strstr($required[$request_type], 'phone') !== false && !preg_match('~^[0-9\\-\\.\\ \\(\\)\\+]+$~', $phone)) {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_phone')));
     }
     if (strstr($required[$request_type], 'subject') !== false && $subject == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_subject')));
     }
     if (strstr($required[$request_type], 'description') !== false && $description == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_description')));
     }
     if (strstr($required[$request_type], 'wp_login') !== false && $wp_login == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_wp_login')));
     }
     if (strstr($required[$request_type], 'wp_password') !== false && $wp_password == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_wp_password')));
     }
     if (strstr($required[$request_type], 'ftp_host') !== false && $ftp_host == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_host')));
     }
     if (strstr($required[$request_type], 'ftp_login') !== false && $ftp_login == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_login')));
     }
     if (strstr($required[$request_type], 'ftp_password') !== false && $ftp_password == '') {
         $this->redirect(array_merge($params, array('w3tc_error' => 'support_request_ftp_password')));
     }
     /**
      * Add attachments
      */
     $attachments = array();
     $attach_files = array(w3_get_wp_config_path(), W3TC_CONFIG_PATH, W3TC_CONFIG_PREVIEW_PATH, W3TC_CONFIG_MASTER_PATH, W3TC_MINIFY_LOG_FILE, w3_get_pgcache_rules_core_path(), w3_get_pgcache_rules_cache_path(), w3_get_browsercache_rules_cache_path(), w3_get_browsercache_rules_no404wp_path(), w3_get_minify_rules_core_path(), w3_get_minify_rules_cache_path());
     foreach ($attach_files as $attach_file) {
         if ($attach_file && file_exists($attach_file) && !in_array($attach_file, $attachments)) {
             $attachments[] = $attach_file;
         }
     }
     /**
      * Attach server info
      */
     $server_info = print_r($this->get_server_info(), true);
     $server_info = str_replace("\n", "\r\n", $server_info);
     $server_info_path = W3TC_TMP_DIR . '/server_info.txt';
     if (@file_put_contents($server_info_path, $server_info)) {
         $attachments[] = $server_info_path;
     }
     /**
      * Attach phpinfo
      */
     ob_start();
     phpinfo();
     $php_info = ob_get_contents();
     ob_end_clean();
     $php_info_path = W3TC_TMP_DIR . '/php_info.html';
     if (@file_put_contents($php_info_path, $php_info)) {
         $attachments[] = $php_info_path;
     }
     /**
      * Attach self-test
      */
//.........这里部分代码省略.........

 /**
  * Removes Page Cache core directives
  *
  * @param SelfTestExceptions $exs
  * @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
  * @throws FileOperationException
  */
 private function rules_remove($exs)
 {
     w3_remove_rules($exs, w3_get_browsercache_rules_cache_path(), W3TC_MARKER_BEGIN_CDN, W3TC_MARKER_END_CDN);
 }

//.........这里部分代码省略.........
         }
         /**
          * Create CDN queue table
          */
         if (($old_config->get_boolean('cdn.enabled') != $new_config->get_boolean('cdn.enabled') || $old_config->get_string('cdn.engine') != $new_config->get_string('cdn.engine')) && $new_config->get_boolean('cdn.enabled') && !w3_is_cdn_mirror($new_config->get_string('cdn.engine'))) {
             $w3_plugin_cdn->table_create();
         }
         /**
          * Update CloudFront CNAMEs
          */
         $update_cf_cnames = false;
         if ($new_config->get_boolean('cdn.enabled') && in_array($new_config->get_string('cdn.engine'), array('cf', 'cf2'))) {
             if ($new_config->get_string('cdn.engine') == 'cf') {
                 $old_cnames = $old_config->get_array('cdn.cf.cname');
                 $new_cnames = $new_config->get_array('cdn.cf.cname');
             } else {
                 $old_cnames = $old_config->get_array('cdn.cf2.cname');
                 $new_cnames = $new_config->get_array('cdn.cf2.cname');
             }
             if (count($old_cnames) != count($new_cnames) || count(array_diff($old_cnames, $new_cnames))) {
                 $update_cf_cnames = true;
             }
         }
         /**
          * Refresh config
          */
         $old_config->load();
         /**
          * Schedule events
          */
         $w3_plugin_pgcache->after_config_change();
         $w3_plugin_dbcache->schedule();
         $w3_plugin_objectcache->schedule();
         $w3_plugin_cdn->after_config_change();
         /**
          * Update support us option
          */
         $this->link_update();
         /**
          * Write browsercache rules
          */
         if ($new_config->get_boolean('browsercache.enabled')) {
             if (w3_can_modify_rules(w3_get_browsercache_rules_cache_path())) {
                 $w3_plugin_browsercache->write_rules_cache();
             }
             if ($new_config->get_boolean('browsercache.no404nxt')) {
                 if (w3_can_modify_rules(w3_get_browsercache_rules_no404nxt_path())) {
                     $w3_plugin_browsercache->write_rules_no404nxt();
                 }
             } else {
                 if (w3_can_modify_rules(w3_get_browsercache_rules_no404nxt_path())) {
                     $w3_plugin_browsercache->remove_rules_no404nxt();
                 }
             }
         } else {
             if (w3_can_modify_rules(w3_get_browsercache_rules_cache_path())) {
                 $w3_plugin_browsercache->remove_rules_cache();
             }
             if (w3_can_modify_rules(w3_get_browsercache_rules_no404nxt_path())) {
                 $w3_plugin_browsercache->remove_rules_no404nxt();
             }
         }
         /**
          * Write minify rewrite rules
          */
         if (W3TC_PHP5) {
             $w3_plugin_minify->after_config_change();
         }
         /**
          * Auto upload minify files to CDN
          */
         if ($new_config->get_boolean('minify.enabled') && $new_config->get_boolean('minify.upload') && $new_config->get_boolean('cdn.enabled') && !w3_is_cdn_mirror($new_config->get_string('cdn.engine'))) {
             $this->cdn_upload_minify();
         }
         /**
          * Auto upload browsercache files to CDN
          */
         if ($new_config->get_boolean('cdn.enabled') && $new_config->get_string('cdn.engine') == 'ftp') {
             $this->cdn_delete_browsercache();
             if ($new_config->get_boolean('browsercache.enabled')) {
                 $this->cdn_upload_browsercache();
             }
         }
         /**
          * Update CloudFront CNAMEs
          */
         if ($update_cf_cnames) {
             $error = null;
             $w3_plugin_cdn->update_cnames($error);
         }
         /**
          * Save blognames into file
          */
         if (w3_is_network() && !w3_is_subdomain_install()) {
             w3_save_blognames();
         }
         return true;
     }
     return false;
 }

 /**
  * Write rules
  *
  * @return void
  */
 function action_rules_autoinstall()
 {
     $commands = explode(',', W3_Request::get_string('autoinstall'));
     $errors = array();
     $notes = array();
     foreach ($commands as $command) {
         try {
             switch ($command) {
                 case 'browsercache_write_rules_cache':
                     $w3_plugin_browsercache = w3_instance('W3_Plugin_BrowserCacheAdmin');
                     $w3_plugin_browsercache->write_rules_cache();
                     if ($w3_plugin_browsercache->check_rules_cache()) {
                         $notes[] = 'Browser cache directives have been successfully written.';
                     } else {
                         $browsercache_rules_cache_path = w3_get_browsercache_rules_cache_path();
                         $errors[] = sprintf('The browser cache rules could not be modified. Please %srun <strong>chmod 777 %s</strong> to resolve this issue.', file_exists($browsercache_rules_cache_path) ? '' : sprintf('create an empty file in <strong>%s</strong> and ', $browsercache_rules_cache_path), $browsercache_rules_cache_path);
                     }
                     break;
                 case 'minify_remove_rules_legacy':
                     $w3_plugin_minify = w3_instance('W3_Plugin_MinifyAdmin');
                     if ($w3_plugin_minify->remove_rules_legacy()) {
                         $notes[] = 'Legacy minify configuration settings have been successfuly removed.';
                     } else {
                         $minify_rules_cache_path = w3_get_minify_rules_cache_path();
                         $errors[] = sprintf('The legacy minify rules could not be modified. Please run <strong>chmod 777 %s</strong> to resolve this issue.', file_exists($minify_rules_cache_path) ? $minify_rules_cache_path : dirname($minify_rules_cache_path));
                     }
                     break;
                 case 'minify_write_rules':
                     $w3_plugin_minify = w3_instance('W3_Plugin_MinifyAdmin');
                     $w3_plugin_minify->write_rules_cache();
                     // throw exceptions
                     if ($w3_plugin_minify->write_rules_core()) {
                         $notes[] = 'Minify rewrite rules have been successfully written.';
                     } else {
                         $minify_rules_core_path = w3_get_minify_rules_core_path();
                         $errors[] = sprintf('The minify rules could not be modified. Please run <strong>chmod 777 %s</strong> to resolve this issue.', file_exists($minify_rules_core_path) ? $minify_rules_core_path : dirname($minify_rules_core_path));
                     }
                     break;
                 case 'minify_write_test_rules':
                     $w3_plugin_minify = w3_instance('W3_Plugin_MinifyAdmin');
                     $w3_plugin_minify->write_multiste_subfolder_rewrite_test_rules_apache();
                     if ($w3_plugin_minify->check_multisite_subfolder_test_rules_cache_apache()) {
                         $notes[] = 'Minify test rewrite rules have been successfully written.';
                     } else {
                         $minify_test_rules_path = w3_get_document_root() . '/.htaccess';
                         $errors[] = sprintf('The minify test rules could not be modified. Please run <strong>chmod 777 %s</strong> to resolve this issue.', $minify_test_rules_path);
                     }
                     break;
                 case 'pgcache_remove_rules_legacy':
                     $w3_plugin_pgcache = w3_instance('W3_Plugin_PgCacheAdmin');
                     if ($w3_plugin_pgcache->remove_rules_legacy()) {
                         $notes[] = 'Legacy page cache configuration settings have been successfully removed.';
                     } else {
                         $pgcache_rules_cache_path = w3_get_pgcache_rules_cache_path();
                         $errors[] = sprintf('The legacy page cache rules could not be removed. Please run <strong>chmod 777 %s</strong> to resolve this issue.', file_exists($pgcache_rules_cache_path) ? $pgcache_rules_cache_path : dirname($pgcache_rules_cache_path));
                     }
                     break;
                 case 'pgcache_write_rules_cache':
                     $w3_plugin_pgcache = w3_instance('W3_Plugin_PgCacheAdmin');
                     $w3_plugin_pgcache->write_rules_cache();
                     // throw exceptions
                     $notes[] = 'Page cache rewrite rules have been successfully written.';
                     break;
                 case 'pgcache_write_rules_core':
                     $w3_plugin_pgcache = w3_instance('W3_Plugin_PgCacheAdmin');
                     $w3_plugin_pgcache->write_rules_core();
                     if ($w3_plugin_pgcache->check_rules_core()) {
                         $notes[] = 'Page cache rewrite rules have been successfully written.';
                     } else {
                         $pgcache_rules_core_path = w3_get_pgcache_rules_core_path();
                         $errors[] = sprintf('The page cache rules could not be modified. Please %srun <strong>chmod 777 %s</strong> to resolve this issue.', file_exists($pgcache_rules_core_path) ? '' : sprintf('create an empty file in <strong>%s</strong> and ', $pgcache_rules_core_path), $pgcache_rules_core_path);
                     }
                     break;
             }
         } catch (Exception $e) {
             $error = $e->getMessage();
             // avoid duplicate errors, like absense of permission for wp-content folder
             if (!in_array($error, $errors)) {
                 $errors[] = $error;
             }
         }
     }
     $this->redirect_with_custom_messages(array(), $errors, $notes);
 }