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                ## 第6章 適配器模式 ### 適配器模式 1. 適配器模式,可以將截然不同的函數接口封裝成統一的API。 2. 實際應用舉例,PHP的數據庫操作有 mysql, mysqli, pdo 3種,可以用適配器模式統一成一致的方法。類似的場景還有cache適配器,將 memcache, redis, file, apc 等不同的緩存函數,統一成一致。
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