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Function.php 0000604 00000010601 15071463045 0007041 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Cache_Core
*/
require_once 'Zend/Cache/Core.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Frontend_Function extends Zend_Cache_Core
{
/**
* This frontend specific options
*
* ====> (boolean) cache_by_default :
* - if true, function calls will be cached by default
*
* ====> (array) cached_functions :
* - an array of function names which will be cached (even if cache_by_default = false)
*
* ====> (array) non_cached_functions :
* - an array of function names which won't be cached (even if cache_by_default = true)
*
* @var array options
*/
protected $_specificOptions = array(
'cache_by_default' => true,
'cached_functions' => array(),
'non_cached_functions' => array()
);
/**
* Constructor
*
* @param array $options Associative array of options
* @return void
*/
public function __construct(array $options = array())
{
while (list($name, $value) = each($options)) {
$this->setOption($name, $value);
}
$this->setOption('automatic_serialization', true);
}
/**
* Main method : call the specified function or get the result from cache
*
* @param string $name Function name
* @param array $parameters Function parameters
* @param array $tags Cache tags
* @param int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
* @param int $priority integer between 0 (very low priority) and 10 (maximum priority) used by some particular backends
* @return mixed Result
*/
public function call($name, $parameters = array(), $tags = array(), $specificLifetime = false, $priority = 8)
{
$cacheBool1 = $this->_specificOptions['cache_by_default'];
$cacheBool2 = in_array($name, $this->_specificOptions['cached_functions']);
$cacheBool3 = in_array($name, $this->_specificOptions['non_cached_functions']);
$cache = (($cacheBool1 || $cacheBool2) && (!$cacheBool3));
if (!$cache) {
// We do not have not cache
return call_user_func_array($name, $parameters);
}
$id = $this->_makeId($name, $parameters);
if ($this->test($id)) {
// A cache is available
$result = $this->load($id);
$output = $result[0];
$return = $result[1];
} else {
// A cache is not available
ob_start();
ob_implicit_flush(false);
$return = call_user_func_array($name, $parameters);
$output = ob_get_contents();
ob_end_clean();
$data = array($output, $return);
$this->save($data, $id, $tags, $specificLifetime, $priority);
}
echo $output;
return $return;
}
/**
* Make a cache id from the function name and parameters
*
* @param string $name Function name
* @param array $parameters Function parameters
* @throws Zend_Cache_Exception
* @return string Cache id
*/
private function _makeId($name, $parameters)
{
if (!is_string($name)) {
Zend_Cache::throwException('Incorrect function name');
}
if (!is_array($parameters)) {
Zend_Cache::throwException('parameters argument must be an array');
}
return md5($name . serialize($parameters));
}
}
Class.php 0000604 00000016076 15071463045 0006335 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Cache_Core
*/
require_once 'Zend/Cache/Core.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Frontend_Class extends Zend_Cache_Core
{
/**
* Available options
*
* ====> (mixed) cached_entity :
* - if set to a class name, we will cache an abstract class and will use only static calls
* - if set to an object, we will cache this object methods
*
* ====> (boolean) cache_by_default :
* - if true, method calls will be cached by default
*
* ====> (array) cached_methods :
* - an array of method names which will be cached (even if cache_by_default = false)
*
* ====> (array) non_cached_methods :
* - an array of method names which won't be cached (even if cache_by_default = true)
*
* @var array available options
*/
protected $_specificOptions = array(
'cached_entity' => null,
'cache_by_default' => true,
'cached_methods' => array(),
'non_cached_methods' => array()
);
/**
* Tags array
*
* @var array
*/
private $_tags = array();
/**
* SpecificLifetime value
*
* false => no specific life time
*
* @var int
*/
private $_specificLifetime = false;
/**
* The cached object or the name of the cached abstract class
*
* @var mixed
*/
private $_cachedEntity = null;
/**
* The class name of the cached object or cached abstract class
*
* Used to differentiate between different classes with the same method calls.
*
* @var string
*/
private $_cachedEntityLabel = '';
/**
* Priority (used by some particular backends)
*
* @var int
*/
private $_priority = 8;
/**
* Constructor
*
* @param array $options Associative array of options
* @throws Zend_Cache_Exception
* @return void
*/
public function __construct(array $options = array())
{
while (list($name, $value) = each($options)) {
$this->setOption($name, $value);
}
if (is_null($this->_specificOptions['cached_entity'])) {
Zend_Cache::throwException('cached_entity must be set !');
}
$this->setCachedEntity($this->_specificOptions['cached_entity']);
$this->setOption('automatic_serialization', true);
}
/**
* Set a specific life time
*
* @param int $specificLifetime
* @return void
*/
public function setSpecificLifetime($specificLifetime = false)
{
$this->_specificLifetime = $specificLifetime;
}
/**
* Set the priority (used by some particular backends)
*
* @param int $priority integer between 0 (very low priority) and 10 (maximum priority)
*/
public function setPriority($priority)
{
$this->_priority = $priority;
}
/**
* Public frontend to set an option
*
* Just a wrapper to get a specific behaviour for cached_entity
*
* @param string $name Name of the option
* @param mixed $value Value of the option
* @throws Zend_Cache_Exception
* @return void
*/
public function setOption($name, $value)
{
if ($name == 'cached_entity') {
$this->setCachedEntity($value);
} else {
parent::setOption($name, $value);
}
}
/**
* Specific method to set the cachedEntity
*
* if set to a class name, we will cache an abstract class and will use only static calls
* if set to an object, we will cache this object methods
*
* @param mixed $cachedEntity
*/
public function setCachedEntity($cachedEntity)
{
if (!is_string($cachedEntity) && !is_object($cachedEntity)) {
Zend_Cache::throwException('cached_entity must be an object or a class name');
}
$this->_cachedEntity = $cachedEntity;
$this->_specificOptions['cached_entity'] = $cachedEntity;
if (is_string($this->_cachedEntity)){
$this->_cachedEntityLabel = $this->_cachedEntity;
} else {
$ro = new ReflectionObject($this->_cachedEntity);
$this->_cachedEntityLabel = $ro->getName();
}
}
/**
* Set the cache array
*
* @param array $tags
* @return void
*/
public function setTagsArray($tags = array())
{
$this->_tags = $tags;
}
/**
* Main method : call the specified method or get the result from cache
*
* @param string $name Method name
* @param array $parameters Method parameters
* @return mixed Result
*/
public function __call($name, $parameters)
{
$cacheBool1 = $this->_specificOptions['cache_by_default'];
$cacheBool2 = in_array($name, $this->_specificOptions['cached_methods']);
$cacheBool3 = in_array($name, $this->_specificOptions['non_cached_methods']);
$cache = (($cacheBool1 || $cacheBool2) && (!$cacheBool3));
if (!$cache) {
// We do not have not cache
return call_user_func_array(array($this->_cachedEntity, $name), $parameters);
}
$id = $this->_makeId($name, $parameters);
if ($this->test($id)) {
// A cache is available
$result = $this->load($id);
$output = $result[0];
$return = $result[1];
} else {
// A cache is not available
ob_start();
ob_implicit_flush(false);
$return = call_user_func_array(array($this->_cachedEntity, $name), $parameters);
$output = ob_get_contents();
ob_end_clean();
$data = array($output, $return);
$this->save($data, $id, $this->_tags, $this->_specificLifetime, $this->_priority);
}
echo $output;
return $return;
}
/**
* Make a cache id from the method name and parameters
*
* @param string $name Method name
* @param array $parameters Method parameters
* @return string Cache id
*/
private function _makeId($name, $parameters)
{
return md5($this->_cachedEntityLabel . '__' . $name . '__' . serialize($parameters));
}
}
Page.php 0000604 00000033524 15071463045 0006141 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Cache_Core
*/
require_once 'Zend/Cache/Core.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Frontend_Page extends Zend_Cache_Core
{
/**
* This frontend specific options
*
* ====> (boolean) http_conditional :
* - if true, http conditional mode is on
* WARNING : http_conditional OPTION IS NOT IMPLEMENTED FOR THE MOMENT (TODO)
*
* ====> (boolean) debug_header :
* - if true, a debug text is added before each cached pages
*
* ====> (boolean) content_type_memorization :
* - deprecated => use memorize_headers instead
* - if the Content-Type header is sent after the cache was started, the
* corresponding value can be memorized and replayed when the cache is hit
* (if false (default), the frontend doesn't take care of Content-Type header)
*
* ====> (array) memorize_headers :
* - an array of strings corresponding to some HTTP headers name. Listed headers
* will be stored with cache datas and "replayed" when the cache is hit
*
* ====> (array) default_options :
* - an associative array of default options :
* - (boolean) cache : cache is on by default if true
* - (boolean) cacheWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
* if true, cache is still on even if there are some variables in this superglobal array
* if false, cache is off if there are some variables in this superglobal array
* - (boolean) makeIdWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
* if true, we have to use the content of this superglobal array to make a cache id
* if false, the cache id won't be dependent of the content of this superglobal array
* - (int) specific_lifetime : cache specific lifetime
* (false => global lifetime is used, null => infinite lifetime,
* integer => this lifetime is used), this "lifetime" is probably only
* usefull when used with "regexps" array
* - (array) tags : array of tags (strings)
* - (int) priority : integer between 0 (very low priority) and 10 (maximum priority) used by
* some particular backends
*
* ====> (array) regexps :
* - an associative array to set options only for some REQUEST_URI
* - keys are (pcre) regexps
* - values are associative array with specific options to set if the regexp matchs on $_SERVER['REQUEST_URI']
* (see default_options for the list of available options)
* - if several regexps match the $_SERVER['REQUEST_URI'], only the last one will be used
*
* @var array options
*/
protected $_specificOptions = array(
'http_conditional' => false,
'debug_header' => false,
'content_type_memorization' => false,
'memorize_headers' => array(),
'default_options' => array(
'cache_with_get_variables' => false,
'cache_with_post_variables' => false,
'cache_with_session_variables' => false,
'cache_with_files_variables' => false,
'cache_with_cookie_variables' => false,
'make_id_with_get_variables' => true,
'make_id_with_post_variables' => true,
'make_id_with_session_variables' => true,
'make_id_with_files_variables' => true,
'make_id_with_cookie_variables' => true,
'cache' => true,
'specific_lifetime' => false,
'tags' => array(),
'priority' => null
),
'regexps' => array()
);
/**
* Internal array to store some options
*
* @var array associative array of options
*/
protected $_activeOptions = array();
/**
* If true, the page won't be cached
*
* @var boolean
*/
private $_cancel = false;
/**
* Constructor
*
* @param array $options Associative array of options
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
* @throws Zend_Cache_Exception
* @return void
*/
public function __construct(array $options = array())
{
while (list($name, $value) = each($options)) {
$name = strtolower($name);
switch ($name) {
case 'regexps':
$this->_setRegexps($value);
break;
case 'default_options':
$this->_setDefaultOptions($value);
break;
case 'content_type_memorization':
$this->_setContentTypeMemorization($value);
break;
default:
$this->setOption($name, $value);
}
}
if (isset($this->_specificOptions['http_conditional'])) {
if ($this->_specificOptions['http_conditional']) {
Zend_Cache::throwException('http_conditional is not implemented for the moment !');
}
}
$this->setOption('automatic_serialization', true);
}
/**
* Specific setter for the 'default_options' option (with some additional tests)
*
* @param array $options Associative array
* @throws Zend_Cache_Exception
* @return void
*/
protected function _setDefaultOptions($options)
{
if (!is_array($options)) {
Zend_Cache::throwException('default_options must be an array !');
}
foreach ($options as $key=>$value) {
if (!is_string($key)) {
Zend_Cache::throwException("invalid option [$key] !");
}
$key = strtolower($key);
if (isset($this->_specificOptions['default_options'][$key])) {
$this->_specificOptions['default_options'][$key] = $value;
}
}
}
/**
* Set the deprecated contentTypeMemorization option
*
* @param boolean $value value
* @return void
* @deprecated
*/
protected function _setContentTypeMemorization($value)
{
$found = null;
foreach ($this->_specificOptions['memorize_headers'] as $key => $value) {
if (strtolower($value) == 'content-type') {
$found = $key;
}
}
if ($value) {
if (!$found) {
$this->_specificOptions['memorize_headers'][] = 'Content-Type';
}
} else {
if ($found) {
unset($this->_specificOptions['memorize_headers'][$found]);
}
}
}
/**
* Specific setter for the 'regexps' option (with some additional tests)
*
* @param array $options Associative array
* @throws Zend_Cache_Exception
* @return void
*/
protected function _setRegexps($regexps)
{
if (!is_array($regexps)) {
Zend_Cache::throwException('regexps option must be an array !');
}
foreach ($regexps as $regexp=>$conf) {
if (!is_array($conf)) {
Zend_Cache::throwException('regexps option must be an array of arrays !');
}
$validKeys = array_keys($this->_specificOptions['default_options']);
foreach ($conf as $key=>$value) {
if (!is_string($key)) {
Zend_Cache::throwException("unknown option [$key] !");
}
$key = strtolower($key);
if (!in_array($key, $validKeys)) {
unset($regexps[$regexp][$key]);
}
}
}
$this->setOption('regexps', $regexps);
}
/**
* Start the cache
*
* @param string $id (optional) A cache id (if you set a value here, maybe you have to use Output frontend instead)
* @param boolean $doNotDie For unit testing only !
* @return boolean True if the cache is hit (false else)
*/
public function start($id = false, $doNotDie = false)
{
$this->_cancel = false;
$lastMatchingRegexp = null;
foreach ($this->_specificOptions['regexps'] as $regexp => $conf) {
if (preg_match("`$regexp`", $_SERVER['REQUEST_URI'])) {
$lastMatchingRegexp = $regexp;
}
}
$this->_activeOptions = $this->_specificOptions['default_options'];
if (!is_null($lastMatchingRegexp)) {
$conf = $this->_specificOptions['regexps'][$lastMatchingRegexp];
foreach ($conf as $key=>$value) {
$this->_activeOptions[$key] = $value;
}
}
if (!($this->_activeOptions['cache'])) {
return false;
}
if (!$id) {
$id = $this->_makeId();
if (!$id) {
return false;
}
}
$array = $this->load($id);
if ($array !== false) {
$data = $array['data'];
$headers = $array['headers'];
if ($this->_specificOptions['debug_header']) {
echo 'DEBUG HEADER : This is a cached page !';
}
if (!headers_sent()) {
foreach ($headers as $key=>$headerCouple) {
$name = $headerCouple[0];
$value = $headerCouple[1];
header("$name: $value");
}
}
echo $data;
if ($doNotDie) {
return true;
}
die();
}
ob_start(array($this, '_flush'));
ob_implicit_flush(false);
return false;
}
/**
* Cancel the current caching process
*/
public function cancel()
{
$this->_cancel = true;
}
/**
* callback for output buffering
* (shouldn't really be called manually)
*
* @param string $data Buffered output
* @return string Data to send to browser
*/
public function _flush($data)
{
if ($this->_cancel) {
return $data;
}
$contentType = null;
$storedHeaders = array();
$headersList = headers_list();
foreach($this->_specificOptions['memorize_headers'] as $key=>$headerName) {
foreach ($headersList as $headerSent) {
$tmp = split(':', $headerSent);
$headerSentName = trim(array_shift($tmp));
if (strtolower($headerName) == strtolower($headerSentName)) {
$headerSentValue = trim(implode(':', $tmp));
$storedHeaders[] = array($headerSentName, $headerSentValue);
}
}
}
$array = array(
'data' => $data,
'headers' => $storedHeaders
);
$this->save($array, null, $this->_activeOptions['tags'], $this->_activeOptions['specific_lifetime'], $this->_activeOptions['priority']);
return $data;
}
/**
* Make an id depending on REQUEST_URI and superglobal arrays (depending on options)
*
* @return mixed|false a cache id (string), false if the cache should have not to be used
*/
protected function _makeId()
{
$tmp = $_SERVER['REQUEST_URI'];
foreach (array('Get', 'Post', 'Session', 'Files', 'Cookie') as $arrayName) {
$tmp2 = $this->_makePartialId($arrayName, $this->_activeOptions['cache_with_' . strtolower($arrayName) . '_variables'], $this->_activeOptions['make_id_with_' . strtolower($arrayName) . '_variables']);
if ($tmp2===false) {
return false;
}
$tmp = $tmp . $tmp2;
}
return md5($tmp);
}
/**
* Make a partial id depending on options
*
* @param string $arrayName Superglobal array name
* @param bool $bool1 If true, cache is still on even if there are some variables in the superglobal array
* @param bool $bool2 If true, we have to use the content of the superglobal array to make a partial id
* @return mixed|false Partial id (string) or false if the cache should have not to be used
*/
protected function _makePartialId($arrayName, $bool1, $bool2)
{
switch ($arrayName) {
case 'Get':
$var = $_GET;
break;
case 'Post':
$var = $_POST;
break;
case 'Session':
if (isset($_SESSION)) {
$var = $_SESSION;
} else {
$var = null;
}
break;
case 'Cookie':
if (isset($_COOKIE)) {
$var = $_COOKIE;
} else {
$var = null;
}
break;
case 'Files':
$var = $_FILES;
break;
default:
return false;
}
if ($bool1) {
if ($bool2) {
return serialize($var);
}
return '';
}
if (count($var) > 0) {
return false;
}
return '';
}
}
File.php 0000604 00000010166 15071463045 0006141 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Cache_Core
*/
require_once 'Zend/Cache/Core.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Frontend_File extends Zend_Cache_Core
{
/**
* Available options
*
* ====> (string) master_file :
* - the complete path and name of the master file
* - this option has to be set !
*
* @var array available options
*/
protected $_specificOptions = array(
'master_file' => ''
);
/**
* Master file mtime
*
* @var int
*/
private $_masterFile_mtime = null;
/**
* Constructor
*
* @param array $options Associative array of options
* @throws Zend_Cache_Exception
* @return void
*/
public function __construct(array $options = array())
{
while (list($name, $value) = each($options)) {
$this->setOption($name, $value);
}
if (!isset($this->_specificOptions['master_file'])) {
Zend_Cache::throwException('master_file option must be set');
}
$this->setMasterFile($this->_specificOptions['master_file']);
}
/**
* Change the master_file option
*
* @param string $masterFile the complete path and name of the master file
*/
public function setMasterFile($masterFile)
{
clearstatcache();
$this->_specificOptions['master_file'] = $masterFile;
if (!($this->_masterFile_mtime = @filemtime($masterFile))) {
Zend_Cache::throwException('Unable to read master_file : '.$masterFile);
}
}
/**
* Public frontend to set an option
*
* Just a wrapper to get a specific behaviour for master_file
*
* @param string $name Name of the option
* @param mixed $value Value of the option
* @throws Zend_Cache_Exception
* @return void
*/
public function setOption($name, $value)
{
if ($name == 'master_file') {
$this->setMasterFile($value);
} else {
parent::setOption($name, $value);
}
}
/**
* Test if a cache is available for the given id and (if yes) return it (false else)
*
* @param string $id Cache id
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
* @param boolean $doNotUnserialize Do not serialize (even if automatic_serialization is true) => for internal use
* @return mixed|false Cached datas
*/
public function load($id, $doNotTestCacheValidity = false, $doNotUnserialize = false)
{
if (!$doNotTestCacheValidity) {
if ($this->test($id)) {
return parent::load($id, true, $doNotUnserialize);
}
return false;
}
return parent::load($id, true, $doNotUnserialize);
}
/**
* Test if a cache is available for the given id
*
* @param string $id Cache id
* @return boolean True is a cache is available, false else
*/
public function test($id)
{
$lastModified = parent::test($id);
if ($lastModified) {
if ($lastModified > $this->_masterFile_mtime) {
return $lastModified;
}
}
return false;
}
}
Output.php 0000604 00000006551 15071463045 0006565 0 ustar 00 <?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* @see Zend_Cache_Core
*/
require_once 'Zend/Cache/Core.php';
/**
* @package Zend_Cache
* @subpackage Zend_Cache_Frontend
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Frontend_Output extends Zend_Cache_Core
{
private $_idStack = array();
/**
* Constructor
*
* @param array $options Associative array of options
* @return void
*/
public function __construct(array $options = array())
{
parent::__construct($options);
$this->_idStack = array();
}
/**
* Start the cache
*
* @param string $id Cache id
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
* @param boolean $echoData If set to true, datas are sent to the browser if the cache is hit (simpy returned else)
* @return mixed True if the cache is hit (false else) with $echoData=true (default) ; string else (datas)
*/
public function start($id, $doNotTestCacheValidity = false, $echoData = true)
{
$data = $this->load($id, $doNotTestCacheValidity);
if ($data !== false) {
if ( $echoData ) {
echo($data);
return true;
} else {
return $data;
}
}
ob_start();
ob_implicit_flush(false);
$this->_idStack[] = $id;
return false;
}
/**
* Stop the cache
*
* @param array $tags Tags array
* @param int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
* @param string $forcedDatas If not null, force written datas with this
* @param boolean $echoData If set to true, datas are sent to the browser
* @param int $priority integer between 0 (very low priority) and 10 (maximum priority) used by some particular backends
* @return void
*/
public function end($tags = array(), $specificLifetime = false, $forcedDatas = null, $echoData = true, $priority = 8)
{
if (is_null($forcedDatas)) {
$data = ob_get_contents();
ob_end_clean();
} else {
$data =& $forcedDatas;
}
$id = array_pop($this->_idStack);
if (is_null($id)) {
Zend_Cache::throwException('use of end() without a start()');
}
$this->save($data, $id, $tags, $specificLifetime, $priority);
if ($echoData) {
echo($data);
}
}
}