[php] serialize, unserialize the session data in PHP

As we know, in PHP, we can use session_encode() and session_decode() to encode/decode the session data, but, if you have tried these two

functionality, you will see the they are not going as you think. So here, i find these two functionality which will help you to do that.

/**
* serialize session
*
* @param array $data
* @param boolean $safe
* @return string
*/
function serialize_session($array, $safe = true)
{
// the session is passed as refernece, even if you dont want it to
if ($safe)
{
$array = unserialize(serialize($array));
}

$raw = '';
$line = 0;
$keys = array_keys($array);
foreach ($keys as $key)
{
$value = $array[$key];
$line++;
$raw .= $key . '|';
if (is_array($value) && isset($value['huge_recursion_blocker_we_hope']))
{
$raw .= 'R:' . $value['huge_recursion_blocker_we_hope'] . ';';
}
else
{
$raw .= serialize($value);
}
$array[$key] = Array('huge_recursion_blocker_we_hope' => $line);
}

return $raw;
}

/**
* unserialize session
*
* @param string $data
* @return array
*/
function unserialize_session($data)
{
$vars = preg_split('/([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff^|]*)\|/', $data, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
for ($i = 0; $vars[$i]; $i++)
{
$result[$vars[$i++]] = unserialize($vars[$i]);
}
return $result;
}