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