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<?php
namespace Cache;
class File {
private $expire;
public function __construct($expire = 3600) {
$this->expire = $expire;
$files = glob(DIR_CACHE . 'cache.*');
if ($files) {
foreach ($files as $file) {
$filename = basename($file);
$time = substr(strrchr($file, '.'), 1);
if ($time < time()) {
$this->delete(substr($filename, 6, strrpos($filename, '.') - 6));
}
}
}
}
public function get($key) {
$files = glob(DIR_CACHE . 'cache.' . basename($key) . '.*');
if ($files) {
$handle = fopen($files[0], 'r');
flock($handle, LOCK_SH);
$size = filesize($files[0]);
if ($size > 0) {
$data = fread($handle, $size);
} else {
$data = '';
}
flock($handle, LOCK_UN);
fclose($handle);
return json_decode($data, true);
}
return false;
}
public function set($key, $value) {
$this->delete($key);
$file = DIR_CACHE . 'cache.' . basename($key) . '.' . (time() + $this->expire);
$handle = fopen($file, 'w');
flock($handle, LOCK_EX);
fwrite($handle, json_encode($value));
fflush($handle);
flock($handle, LOCK_UN);
fclose($handle);
}
public function delete($key) {
$files = glob(DIR_CACHE . 'cache.' . basename($key) . '.*');
if ($files) {
foreach ($files as $file) {
if (!@unlink($file)) {
clearstatcache(false, $file);
}
}
}
}
}
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