55 lines
711 B
PHP
Executable File
55 lines
711 B
PHP
Executable File
<?php
|
|
class LtStoreMemory implements LtStore
|
|
{
|
|
protected $stack;
|
|
|
|
public function add($key, $value)
|
|
{
|
|
if (isset($this->stack[$key]))
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
$this->stack[$key] = $value;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public function del($key)
|
|
{
|
|
if (isset($this->stack[$key]))
|
|
{
|
|
unset($this->stack[$key]);
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function get($key)
|
|
{
|
|
return isset($this->stack[$key]) ? $this->stack[$key] : false;
|
|
}
|
|
|
|
/**
|
|
* key不存在返回false
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function update($key, $value)
|
|
{
|
|
if (!isset($this->stack[$key]))
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
$this->stack[$key] = $value;
|
|
return true;
|
|
}
|
|
}
|
|
}
|