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数组（创建数组，多维数组，数组循环）
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总结

数组相当于一个容器，根据下标（key）值查找自己需要用到的value值，默认索引是从0开始，还可以给value取一个名字，根据

名字来获取value值，foreach来循环数组，得到自己需要的数据。

笔记

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Correcting teacher：查无此人查无此人

Correction status：qualified

Teacher's comments：完成的不错。
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