| | |
| | | */ |
| | | function write($key, $data) |
| | | { |
| | | return $this->write_record($key, $this->packed ? serialize($data) : $data); |
| | | return $this->write_record($key, $this->serialize($data)); |
| | | } |
| | | |
| | | |
| | |
| | | if ($this->cache_changes[$key]) { |
| | | // Make sure we're not going to write unchanged data |
| | | // by comparing current md5 sum with the sum calculated on DB read |
| | | $data = $this->packed ? serialize($data) : $data; |
| | | $data = $this->serialize($data); |
| | | |
| | | if (!$this->cache_sums[$key] || $this->cache_sums[$key] != md5($data)) { |
| | | $this->write_record($key, $data); |
| | |
| | | |
| | | if ($data) { |
| | | $md5sum = md5($data); |
| | | $data = $this->packed ? unserialize($data) : $data; |
| | | $data = $this->unserialize($data); |
| | | |
| | | if ($nostore) { |
| | | return $data; |
| | |
| | | $key = substr($sql_arr['cache_key'], strlen($this->prefix)+1); |
| | | $md5sum = $sql_arr['data'] ? md5($sql_arr['data']) : null; |
| | | if ($sql_arr['data']) { |
| | | $data = $this->packed ? unserialize($sql_arr['data']) : $sql_arr['data']; |
| | | $data = $this->unserialize($sql_arr['data']); |
| | | } |
| | | |
| | | if ($nostore) { |
| | |
| | | * @param string $key Cache key name or pattern |
| | | * @param boolean $prefix_mode Enable it to clear all keys starting |
| | | * with prefix specified in $key |
| | | * |
| | | */ |
| | | private function remove_record($key=null, $prefix_mode=false) |
| | | { |
| | |
| | | // This way each cache will have its own index |
| | | return sprintf('%d:%s%s', $this->userid, $this->prefix, 'INDEX'); |
| | | } |
| | | |
| | | /** |
| | | * Serializes data for storing |
| | | */ |
| | | private function serialize($data) |
| | | { |
| | | if ($this->type == 'db') { |
| | | return $this->db->encode($data, $this->packed); |
| | | } |
| | | |
| | | return $this->packed ? serialize($data) : $data; |
| | | } |
| | | |
| | | /** |
| | | * Unserializes serialized data |
| | | */ |
| | | private function unserialize($data) |
| | | { |
| | | if ($this->type == 'db') { |
| | | return $this->db->decode($data, $this->packed); |
| | | } |
| | | |
| | | return $this->packed ? @unserialize($data) : $data; |
| | | } |
| | | } |