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<?php
namespace Session;
class File {
private $directory;
public function read($session_id) {
$file = DIR_SESSION . '/sess_' . basename($session_id);
if (is_file($file)) {
$handle = fopen($file, 'r');
flock($handle, LOCK_SH);
$data = fread($handle, filesize($file));
flock($handle, LOCK_UN);
fclose($handle);
return unserialize($data);
} else {
return array();
}
}
public function write($session_id, $data) {
$file = DIR_SESSION . '/sess_' . basename($session_id);
$handle = fopen($file, 'w');
flock($handle, LOCK_EX);
fwrite($handle, serialize($data));
fflush($handle);
flock($handle, LOCK_UN);
fclose($handle);
return true;
}
public function destroy($session_id) {
$file = DIR_SESSION . '/sess_' . basename($session_id);
if (is_file($file)) {
unset($file);
}
}
public function __destruct() {
if (ini_get('session.gc_divisor')) {
$gc_divisor = ini_get('session.gc_divisor');
} else {
$gc_divisor = 1;
}
if (ini_get('session.gc_probability')) {
$gc_probability = ini_get('session.gc_probability');
} else {
$gc_probability = 1;
}
if ((rand() % $gc_divisor) < $gc_probability) {
$expire = time() - ini_get('session.gc_maxlifetime');
$files = glob(DIR_SESSION . '/sess_*');
foreach ($files as $file) {
if (filemtime($file) < $expire) {
unlink($file);
}
}
}
}
}
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