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CEAcceleratorCache

system.caching
继承 class CEAcceleratorCache » CCache » CApplicationComponent » CComponent
实现 ArrayAccess, ICache, IApplicationComponent
源码 framework/caching/CEAcceleratorCache.php
CEAcceleratorCache implements a cache application module based on eaccelerator.

To use this application component, the eAccelerator PHP extension must be loaded.

See CCache manual for common cache operations that are supported by CEAccelerator.

Please note that as of v0.9.6, eAccelerator no longer supports data caching. This means if you still want to use this component, your eAccelerator should be of 0.9.5.x or lower version.

公共属性

隐藏继承的属性

属性类型描述被定义在
behaviors array the behaviors that should be attached to this component. CApplicationComponent
hashKey boolean whether to md5-hash the cache key for normalization purposes. CCache
isInitialized boolean Checks if this application component has been initialized. CApplicationComponent
keyPrefix string a string prefixed to every cache key so that it is unique. CCache
serializer array|boolean the functions used to serialize and unserialize cached data. CCache

公共方法

隐藏继承的方法

方法描述被定义在
__call() Calls the named method which is not a class method. CComponent
__get() Returns a property value, an event handler list or a behavior based on its name. CComponent
__isset() Checks if a property value is null. CComponent
__set() Sets value of a component property. CComponent
__unset() Sets a component property to be null. CComponent
add() Stores a value identified by a key into cache if the cache does not contain this key. CCache
asa() Returns the named behavior object. CComponent
attachBehavior() Attaches a behavior to this component. CComponent
attachBehaviors() Attaches a list of behaviors to the component. CComponent
attachEventHandler() Attaches an event handler to an event. CComponent
canGetProperty() Determines whether a property can be read. CComponent
canSetProperty() Determines whether a property can be set. CComponent
delete() Deletes a value with the specified key from cache CCache
detachBehavior() Detaches a behavior from the component. CComponent
detachBehaviors() Detaches all behaviors from the component. CComponent
detachEventHandler() Detaches an existing event handler. CComponent
disableBehavior() Disables an attached behavior. CComponent
disableBehaviors() Disables all behaviors attached to this component. CComponent
enableBehavior() Enables an attached behavior. CComponent
enableBehaviors() Enables all behaviors attached to this component. CComponent
evaluateExpression() Evaluates a PHP expression or callback under the context of this component. CComponent
flush() Deletes all values from cache. CCache
get() Retrieves a value from cache with a specified key. CCache
getEventHandlers() Returns the list of attached event handlers for an event. CComponent
getIsInitialized() Checks if this application component has been initialized. CApplicationComponent
hasEvent() Determines whether an event is defined. CComponent
hasEventHandler() Checks whether the named event has attached handlers. CComponent
hasProperty() Determines whether a property is defined. CComponent
init() Initializes this application component. CEAcceleratorCache
mget() Retrieves multiple values from cache with the specified keys. CCache
offsetExists() Returns whether there is a cache entry with a specified key. CCache
offsetGet() Retrieves the value from cache with a specified key. CCache
offsetSet() Stores the value identified by a key into cache. CCache
offsetUnset() Deletes the value with the specified key from cache CCache
raiseEvent() Raises an event. CComponent
set() Stores a value identified by a key into cache. CCache

受保护的方法

隐藏继承的方法

方法描述被定义在
addValue() Stores a value identified by a key into cache if the cache does not contain this key. CEAcceleratorCache
deleteValue() Deletes a value with the specified key from cache CEAcceleratorCache
flushValues() Deletes all values from cache. CEAcceleratorCache
generateUniqueKey() CCache
getValue() Retrieves a value from cache with a specified key. CEAcceleratorCache
getValues() Retrieves multiple values from cache with the specified keys. CCache
setValue() Stores a value identified by a key in cache. CEAcceleratorCache

方法详情

addValue() 方法
protected boolean addValue(string $key, string $value, integer $expire)
$key string the key identifying the value to be cached
$value string the value to be cached
$expire integer the number of seconds in which the cached value will expire. 0 means never expire.
{return} boolean true if the value is successfully stored into cache, false otherwise
源码: framework/caching/CEAcceleratorCache.php#74 (显示)
protected function addValue($key,$value,$expire)
{
    return (
NULL === eaccelerator_get($key)) ? $this->setValue($key,$value,$expire) : false;
}

Stores a value identified by a key into cache if the cache does not contain this key. This is the implementation of the method declared in the parent class.

deleteValue() 方法
protected boolean deleteValue(string $key)
$key string the key of the value to be deleted
{return} boolean if no error happens during deletion
源码: framework/caching/CEAcceleratorCache.php#85 (显示)
protected function deleteValue($key)
{
    return 
eaccelerator_rm($key);
}

Deletes a value with the specified key from cache This is the implementation of the method declared in the parent class.

flushValues() 方法 (自版本 v1.1.5 可用)
protected boolean flushValues()
{return} boolean whether the flush operation was successful.
源码: framework/caching/CEAcceleratorCache.php#96 (显示)
protected function flushValues()
{
    
// first, remove expired content from cache
    
eaccelerator_gc();
    
// now, remove leftover cache-keys
    
$keys eaccelerator_list_keys();
    foreach(
$keys as $key)
        
$this->deleteValue(substr($key['name'], 1));
    return 
true;
}

Deletes all values from cache. This is the implementation of the method declared in the parent class.

getValue() 方法
protected string|boolean getValue(string $key)
$key string a unique key identifying the cached value
{return} string|boolean the value stored in cache, false if the value is not in the cache or expired.
源码: framework/caching/CEAcceleratorCache.php#45 (显示)
protected function getValue($key)
{
    
$result eaccelerator_get($key);
    return 
$result !== NULL $result false;
}

Retrieves a value from cache with a specified key. This is the implementation of the method declared in the parent class.

init() 方法
public void init()
源码: framework/caching/CEAcceleratorCache.php#32 (显示)
public function init()
{
    
parent::init();
    if(!
function_exists('eaccelerator_get'))
        throw new 
CException(Yii::t('yii','CEAcceleratorCache requires PHP eAccelerator extension to be loaded, enabled or compiled with the "--with-eaccelerator-shared-memory" option.'));
}

Initializes this application component. This method is required by the IApplicationComponent interface. It checks the availability of eAccelerator.

setValue() 方法
protected boolean setValue(string $key, string $value, integer $expire)
$key string the key identifying the value to be cached
$value string the value to be cached
$expire integer the number of seconds in which the cached value will expire. 0 means never expire.
{return} boolean true if the value is successfully stored into cache, false otherwise
源码: framework/caching/CEAcceleratorCache.php#60 (显示)
protected function setValue($key,$value,$expire)
{
    return 
eaccelerator_put($key,$value,$expire);
}

Stores a value identified by a key in cache. This is the implementation of the method declared in the parent class.