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php实现的数字验证码及数字运算验证码

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Release: 2016-06-06 19:50:11
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这篇文章主要介绍了php实现的数字验证码及数字运算验证码,以实例形式分别描述了php实现数字验证码及数学运算验证码的相关技巧,非常简单实用,需要的朋友可以参考

本文实例讲述了php实现的数字验证码及数字运算验证码。分享给大家供大家参考。具体如下:

1. 数字验证码:

2. 数字运算验证码:

希望本文所述对大家的php程序设计有所帮助。

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