PHP Util_Environment::is_zlib_enabled方法代码示例

 /**
  *
  *
  * @param Config  $config
  * @return string
  */
 function w3tc_notes($notes)
 {
     $c = Dispatcher::config();
     $state = Dispatcher::config_state();
     $state_master = Dispatcher::config_state_master();
     $state_note = Dispatcher::config_state_note();
     /**
      * Check wp-content permissions
      */
     if (!W3TC_WIN && !$state_master->get_boolean('common.hide_note_wp_content_permissions')) {
         $wp_content_mode = Util_File::get_file_permissions(WP_CONTENT_DIR);
         if ($wp_content_mode > 0755) {
             $notes['generic_wp_content_writeable'] = sprintf(__('<strong>%s</strong> is write-able. When finished installing the plugin, change the permissions back to the default: <strong>chmod 755 %s</strong>. Permissions are currently %s. %s', 'w3-total-cache'), WP_CONTENT_DIR, WP_CONTENT_DIR, base_convert(Util_File::get_file_permissions(WP_CONTENT_DIR), 10, 8), Util_Ui::button_hide_note2(array('w3tc_default_config_state_master' => 'y', 'key' => 'common.hide_note_wp_content_permissions', 'value' => 'true')));
         }
     }
     /**
      * Check Zlib extension
      */
     if (!$state_master->get_boolean('common.hide_note_no_zlib') && !function_exists('gzencode')) {
         $notes['no_zlib'] = sprintf(__('Unfortunately the PHP installation is incomplete, the <strong>zlib module is missing</strong>. This is a core PHP module. Notify the server administrator. %s', 'w3-total-cache'), Util_Ui::button_hide_note2(array('w3tc_default_config_state_master' => 'y', 'key' => 'common.hide_note_no_zlib', 'value' => 'true')));
     }
     /**
      * Check if Zlib output compression is enabled
      */
     if (!$state_master->get_boolean('common.hide_note_zlib_output_compression') && Util_Environment::is_zlib_enabled()) {
         $notes['zlib_output_compression'] = sprintf(__('Either the PHP configuration, web server configuration or a script in the WordPress installation has <strong>zlib.output_compression</strong> enabled.<br />Please locate and disable this setting to ensure proper HTTP compression behavior. %s', 'w3-total-cache'), Util_Ui::button_hide_note2(array('w3tc_default_config_state_master' => 'y', 'key' => 'common.hide_note_zlib_output_compression', 'value' => 'true')));
     }
     if ($state_master->get_boolean('common.show_note.nginx_restart_required')) {
         $cf = Dispatcher::component('CacheFlush');
         $notes['nginx_restart_required'] = sprintf(__('nginx.conf rules have been updated. Please restart nginx server to provide a consistent user experience. %s', 'w3-total-cache'), Util_Ui::button_hide_note2(array('w3tc_default_config_state_master' => 'y', 'key' => 'common.show_note.nginx_restart_required', 'value' => 'false')));
     }
     /**
      * Preview mode
      */
     if ($c->is_preview()) {
         $notes['preview_mode'] = sprintf(__('Preview mode is active: Changed settings will not take effect until preview mode is %s or %s.', 'w3-total-cache'), Util_Ui::button_link(__('deploy', 'w3-total-cache'), Util_Ui::url(array('w3tc_config_preview_deploy' => 'y'))), Util_Ui::button_link(__('disable', 'w3-total-cache'), Util_Ui::url(array('w3tc_config_preview_disable' => 'y')))) . '<br /><span class="description">' . sprintf(__('To preview any changed settings (without deploying): %s', 'w3-total-cache'), Util_Ui::preview_link()) . '</span>';
     }
     /**
      * Show notification after plugin activate/deactivate
      */
     if ($state_note->get('common.show_note.plugins_updated') && !is_network_admin()) {
         $texts = array();
         if ($c->get_boolean('pgcache.enabled')) {
             $texts[] = Util_Ui::button_link(__('empty the page cache', 'w3-total-cache'), Util_Ui::url(array('w3tc_flush_posts' => 'y')));
         }
         if ($c->get_boolean('minify.enabled')) {
             $texts[] = sprintf(__('check the %s to maintain the desired user experience', 'w3-total-cache'), Util_Ui::button_link(__('minify settings', 'w3-total-cache'), Util_Ui::url(array('w3tc_default_config_state_note' => 'y', 'key' => 'common.show_note.plugins_updated', 'value' => 'false'))));
         }
         if (count($texts)) {
             $notes['some_plugins_activated'] = sprintf(__('One or more plugins have been activated or deactivated, please %s. %s', 'w3-total-cache'), implode(__(' and ', 'w3-total-cache'), $texts), Util_Ui::button_hide_note2(array('w3tc_default_config_state_note' => 'y', 'key' => 'common.show_note.plugins_updated', 'value' => 'false')));
         }
     }
     /**
      * Show notification when flush_statics needed
      */
     if ($c->get_boolean('browsercache.enabled') && $state_note->get('common.show_note.flush_statics_needed') && !is_network_admin() && !$c->is_preview()) {
         $notes['flush_statics_needed'] = sprintf(__('The setting change(s) made either invalidate the cached data or modify the behavior of the site. %s now to provide a consistent user experience. %s', 'w3-total-cache'), Util_Ui::button_link('Empty the static files cache', Util_Ui::url(array('w3tc_flush_statics' => 'y'))), Util_Ui::button_hide_note2(array('w3tc_default_config_state_note' => 'y', 'key' => 'common.show_note.flush_statics_needed', 'value' => 'false')));
     }
     /**
      * Show notification when flush_posts needed
      */
     if ($state_note->get('common.show_note.flush_posts_needed') && !is_network_admin() && !$c->is_preview() && !isset($notes['flush_statics_needed'])) {
         $cf = Dispatcher::component('CacheFlush');
         if ($cf->flushable_posts()) {
             $notes['flush_posts_needed'] = sprintf(__('The setting change(s) made either invalidate the cached data or modify the behavior of the site. %s now to provide a consistent user experience. %s', 'w3-total-cache'), Util_Ui::button_link('Empty the page cache', Util_Ui::url(array('w3tc_flush_posts' => 'y'))), Util_Ui::button_hide_note2(array('w3tc_default_config_state_note' => 'y', 'key' => 'common.show_note.flush_posts_needed', 'value' => 'false')));
         }
     }
     return $notes;
 }

 /**
  * Returns current compression
  *
  * @return boolean
  */
 function _get_compression()
 {
     if ($this->_debug) {
         // cannt generate/use compressed files during debug mode
         return false;
     }
     if (!Util_Environment::is_zlib_enabled() && !$this->_is_buggy_ie()) {
         $compressions = $this->_get_compressions();
         foreach ($compressions as $compression) {
             if (is_string($compression) && isset($_SERVER['HTTP_ACCEPT_ENCODING']) && stristr($_SERVER['HTTP_ACCEPT_ENCODING'], $compression) !== false) {
                 return $compression;
             }
         }
     }
     return false;
 }