PHP Zend_Cache_Backend_Interface::load方法代码示例

 /**
  * Load value from swap file.
  *
  * @internal
  * @param Zend_Memory_Container_Movable $container
  * @param integer $id
  */
 public function load(Zend_Memory_Container_Movable $container, $id)
 {
     $value = $this->_backend->load($this->_managerId . $id, true);
     // Try to swap other objects if necessary
     // (do not include specified object into check)
     $this->_memorySize += strlen($value);
     $this->_swapCheck();
     // Add loaded obect to the end of loaded objects list
     $container->setValue($value);
     $this->_loadedObjects[$id] = $container;
 }

 /**
  * Save some data in a cache
  *
  * @param  mixed $data           Data to put in cache (can be another type than string if automatic_serialization is on)
  * @param  string $id             Cache id (if not set, the last cache id will be used)
  * @param  array $tags           Cache tags
  * @param  int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
  * @param  int   $priority         integer between 0 (very low priority) and 10 (maximum priority) used by some particular backends
  * @throws Zend_Cache_Exception
  * @return boolean True if no problem
  */
 public function save($data, $id = null, $tags = array(), $specificLifetime = false, $priority = 8)
 {
     if (!$this->_options['caching']) {
         return true;
     }
     if ($id === null) {
         $id = $this->_lastId;
     } else {
         $id = $this->_id($id);
     }
     self::_validateIdOrTag($id);
     self::_validateTagsArray($tags);
     if ($this->_options['automatic_serialization']) {
         // we need to serialize datas before storing them
         $data = serialize($data);
     } else {
         if (!is_string($data)) {
             Zend_Cache::throwException("Datas must be string or set automatic_serialization = true");
         }
     }
     // automatic cleaning
     if ($this->_options['automatic_cleaning_factor'] > 0) {
         $rand = rand(1, $this->_options['automatic_cleaning_factor']);
         if ($rand == 1) {
             //  new way                 || deprecated way
             if ($this->_extendedBackend || method_exists($this->_backend, 'isAutomaticCleaningAvailable')) {
                 $this->_log("Zend_Cache_Core::save(): automatic cleaning running", 7);
                 $this->clean(Zend_Cache::CLEANING_MODE_OLD);
             } else {
                 $this->_log("Zend_Cache_Core::save(): automatic cleaning is not available/necessary with current backend", 4);
             }
         }
     }
     $this->_log("Zend_Cache_Core: save item '{$id}'", 7);
     if ($this->_options['ignore_user_abort']) {
         $abort = ignore_user_abort(true);
     }
     if ($this->_extendedBackend && $this->_backendCapabilities['priority']) {
         $result = $this->_backend->save($data, $id, $tags, $specificLifetime, $priority);
     } else {
         $result = $this->_backend->save($data, $id, $tags, $specificLifetime);
     }
     if ($this->_options['ignore_user_abort']) {
         ignore_user_abort($abort);
     }
     if (!$result) {
         // maybe the cache is corrupted, so we remove it !
         $this->_log("Zend_Cache_Core::save(): failed to save item '{$id}' -> removing it", 4);
         $this->_backend->remove($id);
         return false;
     }
     if ($this->_options['write_control']) {
         $data2 = $this->_backend->load($id, true);
         if ($data != $data2) {
             $this->_log("Zend_Cache_Core::save(): write control of item '{$id}' failed -> removing it", 4);
             $this->_backend->remove($id);
             return false;
         }
     }
     return true;
 }

 /**
  * Save some data in a cache
  *
  * @param  mixed $data           Data to put in cache (can be another type than string if automatic_serialization is on)
  * @param  string $id             Cache id (if not set, the last cache id will be used)
  * @param  array $tags           Cache tags
  * @param  int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
  * @param  int   $priority         integer between 0 (very low priority) and 10 (maximum priority) used by some particular backends
  * @throws Zend_Cache_Exception
  * @return boolean True if no problem
  */
 public function save($data, $id = null, $tags = array(), $specificLifetime = false, $priority = 8)
 {
     if (!$this->_options['caching']) {
         return true;
     }
     if ($id === null) {
         $id = $this->_lastId;
     } else {
         $id = $this->_id($id);
     }
     self::_validateIdOrTag($id);
     self::_validateTagsArray($tags);
     if ($this->_options['automatic_serialization']) {
         // we need to serialize datas before storing them
         $data = serialize($data);
     } else {
         if (!is_string($data)) {
             Zend_Cache::throwException("Datas must be string or set automatic_serialization = true");
         }
     }
     // automatic cleaning
     if ($this->_options['automatic_cleaning_factor'] > 0) {
         $rand = rand(1, $this->_options['automatic_cleaning_factor']);
         if ($rand == 1) {
             if ($this->_extendedBackend) {
                 // New way
                 if ($this->_backendCapabilities['automatic_cleaning']) {
                     $this->clean(Zend_Cache::CLEANING_MODE_OLD);
                 } else {
                     $this->_log('Zend_Cache_Core::save() / automatic cleaning is not available/necessary with this backend');
                 }
             } else {
                 // Deprecated way (will be removed in next major version)
                 if (method_exists($this->_backend, 'isAutomaticCleaningAvailable') && $this->_backend->isAutomaticCleaningAvailable()) {
                     $this->clean(Zend_Cache::CLEANING_MODE_OLD);
                 } else {
                     $this->_log('Zend_Cache_Core::save() / automatic cleaning is not available/necessary with this backend');
                 }
             }
         }
     }
     if ($this->_options['ignore_user_abort']) {
         $abort = ignore_user_abort(true);
     }
     if ($this->_extendedBackend && $this->_backendCapabilities['priority']) {
         $result = $this->_backend->save($data, $id, $tags, $specificLifetime, $priority);
     } else {
         $result = $this->_backend->save($data, $id, $tags, $specificLifetime);
     }
     if ($this->_options['ignore_user_abort']) {
         ignore_user_abort($abort);
     }
     if (!$result) {
         // maybe the cache is corrupted, so we remove it !
         if ($this->_options['logging']) {
             $this->_log("Zend_Cache_Core::save() : impossible to save cache (id={$id})");
         }
         $this->_backend->remove($id);
         return false;
     }
     if ($this->_options['write_control']) {
         $data2 = $this->_backend->load($id, true);
         if ($data != $data2) {
             $this->_log('Zend_Cache_Core::save() / write_control : written and read data do not match');
             $this->_backend->remove($id);
             return false;
         }
     }
     return true;
 }

 /**
  * Returns the contents of storage
  *
  * Behavior is undefined when storage is empty.
  *
  * @throws Zend_Auth_Storage_Exception If reading contents from storage is impossible
  * @return mixed
  */
 public function read()
 {
     return $this->_backend->load($this->_id);
 }