function DrupalAPCCache::clear in APC - Alternative PHP Cache 7

Expires data from the cache.

If called without arguments, expirable entries will be cleared from the cache_page and cache_block bins.

Parameters

$cid: If set, the cache ID or an array of cache IDs. Otherwise, all cache entries that can expire are deleted. The $wildcard argument will be ignored if set to NULL.

$wildcard: If TRUE, the $cid argument must contain a string value and cache IDs starting with $cid are deleted in addition to the exact cache ID specified by $cid. If $wildcard is TRUE and $cid is '*', the entire cache is emptied.

Overrides DrupalCacheInterface::clear

File

./drupal_apc_cache.inc, line 260

This integrates the drupal APC cache backend.

Class

DrupalAPCCache

APC cache implementation.

Code

function clear($cid = NULL, $wildcard = FALSE) {
  if ($this->drush) {
    self::$remoteClears[$this->bin][serialize($cid)] = $wildcard;

    // APC uses separate storage for CLI mode, bounce the clear request back
    // into this method on all server nodes via XMLRPC.
    return;
  }

  // Add a get to our statistics.
  $GLOBALS['apc_statistics'][] = array(
    'clear',
    $this->bin,
    $cid,
    (int) $wildcard,
  );
  if (empty($cid)) {
    $this
      ->flush();
  }
  else {
    if ($wildcard) {
      if ($cid == '*') {
        $this
          ->flush();
      }
      else {
        $this
          ->deletePrefix($cid);
      }
    }
    else {
      if (is_array($cid)) {
        foreach ($cid as $entry) {
          apc_delete($this
            ->key($entry));
        }
      }
      else {
        apc_delete($this
          ->key($cid));
      }
    }
  }
}