/**
* Initialize the cache properties
*/
protected static function initialize()
{
$apcVersion = phpversion('apc');
$xcVersion = phpversion('xcache');
static::$supportedCaches = array('OPcache' => array('active' => extension_loaded('Zend OPcache') && ini_get('opcache.enable') === '1', 'version' => phpversion('Zend OPcache'), 'canReset' => TRUE, 'canInvalidate' => function_exists('opcache_invalidate'), 'error' => FALSE, 'clearCallback' => function ($fileAbsPath) {
if ($fileAbsPath !== NULL && function_exists('opcache_invalidate')) {
opcache_invalidate($fileAbsPath);
} else {
opcache_reset();
}
}), 'APC' => array('active' => extension_loaded('apc') && !extension_loaded('apcu') && ini_get('apc.enabled') === '1', 'version' => $apcVersion, 'canReset' => TRUE, 'canInvalidate' => self::canApcInvalidate(), 'error' => $apcVersion && VersionNumberUtility::convertVersionNumberToInteger($apcVersion) < 3001007, 'clearCallback' => function ($fileAbsPath) {
if ($fileAbsPath !== NULL && OpcodeCacheUtility::getCanInvalidate('APC')) {
// This may output a warning like: PHP Warning: apc_delete_file(): Could not stat file
// This warning isn't true, this means that apc was unable to generate the cache key
// which depends on the configuration of APC.
apc_delete_file($fileAbsPath);
} else {
apc_clear_cache('opcode');
}
}), 'WinCache' => array('active' => extension_loaded('wincache') && ini_get('wincache.ocenabled') === '1', 'version' => phpversion('wincache'), 'canReset' => FALSE, 'canInvalidate' => TRUE, 'error' => FALSE, 'clearCallback' => function ($fileAbsPath) {
if ($fileAbsPath !== NULL) {
wincache_refresh_if_changed(array($fileAbsPath));
} else {
// No argument means refreshing all.
wincache_refresh_if_changed();
}
}), 'XCache' => array('active' => extension_loaded('xcache'), 'version' => $xcVersion, 'canReset' => TRUE, 'canInvalidate' => FALSE, 'error' => FALSE, 'clearCallback' => $xcVersion && VersionNumberUtility::convertVersionNumberToInteger($xcVersion) < 3000000 ? function ($fileAbsPath) {
if (!ini_get('xcache.admin.enable_auth')) {
xcache_clear_cache(XC_TYPE_PHP, 0);
}
} : function ($fileAbsPath) {
if (!ini_get('xcache.admin.enable_auth')) {
xcache_clear_cache(XC_TYPE_PHP);
}
}), 'eAccelerator' => array('active' => extension_loaded('eAccelerator'), 'version' => phpversion('eaccelerator'), 'canReset' => FALSE, 'canInvalidate' => FALSE, 'error' => TRUE, 'clearCallback' => function ($fileAbsPath) {
eaccelerator_clear();
}), 'ZendOptimizerPlus' => array('active' => extension_loaded('Zend Optimizer+') && ini_get('zend_optimizerplus.enable') === '1', 'version' => phpversion('Zend Optimizer+'), 'canReset' => TRUE, 'canInvalidate' => FALSE, 'error' => FALSE, 'clearCallback' => function ($fileAbsPath) {
accelerator_reset();
}));
static::$activeCaches = array();
// Cache the active ones
foreach (static::$supportedCaches as $opcodeCache => $properties) {
if ($properties['active']) {
static::$activeCaches[$opcodeCache] = $properties;
}
}
}
/**
* Flushes a directory by first moving to a temporary resource, and then
* triggering the remove process. This way directories can be flushed faster
* to prevent race conditions on concurrent processes accessing the same directory.
*
* @param string $directory The directory to be renamed and flushed
* @param bool $keepOriginalDirectory Whether to only empty the directory and not remove it
* @param bool $flushOpcodeCache Also flush the opcode cache right after renaming the directory.
* @return boolean Whether the action was successful
*/
public static function flushDirectory($directory, $keepOriginalDirectory = FALSE, $flushOpcodeCache = FALSE)
{
$result = FALSE;
if (is_dir($directory)) {
$temporaryDirectory = rtrim($directory, '/') . '.' . uniqid('remove', TRUE) . '/';
if (rename($directory, $temporaryDirectory)) {
$flushOpcodeCache && OpcodeCacheUtility::clearAllActive($directory);
if ($keepOriginalDirectory) {
self::mkdir($directory);
}
clearstatcache();
$result = self::rmdir($temporaryDirectory, TRUE);
}
}
return $result;
}
