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php在查询的时候,出现需要输入验证码。这个是如何做的

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Release: 2016-06-13 09:58:52
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php在查询的时候,出现需要输入验证码。这个是怎么做的
它是图片的。

------解决方案--------------------
和普通验证码不是一样吗?

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