Apachenote.class.php
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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Cache\Driver;
use Think\Cache;
/**
* Apachenote缓存驱动
*/
class Apachenote extends Cache
{
/**
* 架构函数
* @param array $options 缓存参数
* @access public
*/
public function __construct($options = array())
{
if (!empty($options)) {
$this->options = $options;
}
if (empty($options)) {
$options = array(
'host' => '127.0.0.1',
'port' => 1042,
'timeout' => 10,
);
}
$this->options = $options;
$this->options['prefix'] = isset($options['prefix']) ? $options['prefix'] : C('DATA_CACHE_PREFIX');
$this->options['length'] = isset($options['length']) ? $options['length'] : 0;
$this->handler = null;
$this->open();
}
/**
* 读取缓存
* @access public
* @param string $name 缓存变量名
* @return mixed
*/
public function get($name)
{
$this->open();
$name = $this->options['prefix'] . $name;
$s = 'F' . pack('N', strlen($name)) . $name;
fwrite($this->handler, $s);
for ($data = '';!feof($this->handler);) {
$data .= fread($this->handler, 4096);
}
N('cache_read', 1);
$this->close();
return '' === $data ? '' : unserialize($data);
}
/**
* 写入缓存
* @access public
* @param string $name 缓存变量名
* @param mixed $value 存储数据
* @return boolean
*/
public function set($name, $value)
{
N('cache_write', 1);
$this->open();
$value = serialize($value);
$name = $this->options['prefix'] . $name;
$s = 'S' . pack('NN', strlen($name), strlen($value)) . $name . $value;
fwrite($this->handler, $s);
$ret = fgets($this->handler);
$this->close();
if ("OK\n" === $ret) {
if ($this->options['length'] > 0) {
// 记录缓存队列
$this->queue($name);
}
return true;
}
return false;
}
/**
* 删除缓存
* @access public
* @param string $name 缓存变量名
* @return boolean
*/
public function rm($name)
{
$this->open();
$name = $this->options['prefix'] . $name;
$s = 'D' . pack('N', strlen($name)) . $name;
fwrite($this->handler, $s);
$ret = fgets($this->handler);
$this->close();
return "OK\n" === $ret;
}
/**
* 关闭缓存
* @access private
*/
private function close()
{
fclose($this->handler);
$this->handler = false;
}
/**
* 打开缓存
* @access private
*/
private function open()
{
if (!is_resource($this->handler)) {
$this->handler = fsockopen($this->options['host'], $this->options['port'], $_, $_, $this->options['timeout']);
}
}
}