| public pack ( mixed $data, array $opts = [] ) : string | ||
| $data | mixed | The data to pack. |
| $opts | array | Additional options:
- compress: (mixed) If false, don't use compression. If true, uses
default compress length (DEFAULT). If 0, always compress.
All other integer values: compress only if data is
greater than this string length.
- drivers: (array) Only use these drivers to pack. By default, driver
to use is auto-determined.
- phpob: (boolean) If true, the data contains PHP serializable
objects (i.e. objects that have a PHP-specific serialized
representation). If false, the data does not contain any of
these objects. If not present, will auto-determine
existence of these objects.
|
| return | string | The packed string. |
public function pack($data, array $opts = array())
{
$opts = array_merge(array('compress' => true), $opts);
if (!isset($opts['phpob'])) {
$auto = new Horde_Pack_Autodetermine($data);
$opts['phpob'] = $auto->phpob;
}
foreach (self::$_drivers as $key => $val) {
if (!empty($opts['phpob']) && !$val->phpob) {
continue;
}
if (isset($opts['drivers'])) {
if (!in_array(get_class($val), $opts['drivers'])) {
continue;
}
}
/* Format of data:
* First-byte:
* 1,2,4,8,16,32 - Reserved for pack format.
* 64 - Packed data has been compressed.
* 128 - RESERVED for future use (if set, indicates that initial
* byte will extend into next byte).
* Packed (and compressed data) follows this byte. */
try {
$packed = $val->pack($data);
} catch (Horde_Pack_Exception $e) {
continue;
}
if ($opts['compress'] !== false) {
if ($opts['compress'] === 0) {
$compress = true;
} else {
if ($opts['compress'] === true) {
$opts['compress'] = self::DEFAULT_COMPRESS;
}
$compress = strlen($packed) > $opts['compress'];
}
if ($compress) {
$packed = self::$_compress->compress($packed);
$key |= self::COMPRESS_MASK;
}
}
return pack('C', $key) . $packed;
}
throw new Horde_Pack_Exception('Could not pack data.');
} /**
* Updates the cache.
*/
public function save()
{
foreach ($this->_update as $mbox => $val) {
try {
if (!empty($val['u'])) {
$ptr =& $this->_data[$mbox];
foreach ($this->_getMsgCids($mbox, array_keys($val['u'])) as $k2 => $v2) {
try {
$this->_hash->set($v2, $this->_pack->pack($ptr[$k2]), array('expire' => $this->_params['lifetime']));
} catch (Horde_Pack_Exception $e) {
$this->deleteMsgs($mbox, array($v2));
$val['d'][] = $v2;
}
}
}
if (!empty($val['d'])) {
$this->_hash->delete(array_values($this->_getMsgCids($mbox, $val['d'])));
}
if (!empty($val['m'])) {
try {
$this->_hash->set($this->_getCid($mbox), $this->_pack->pack($this->_mbox[$mbox]), array('expire' => $this->_params['lifetime']));
} catch (Horde_Pack_Exception $e) {
}
}
} catch (Horde_Exception $e) {
}
}
$this->_update = array();
}
