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php实现可运算的验证码

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Release： 2016-06-06 19:37:12
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这篇文章主要介绍了php如何实现可运算的验证码，代码很详细，值得大家学，感兴趣的小伙伴们可以参考一下

php实现可运算的验证码

img.php代码

以上就是为大家介绍的php可运算的验证码全部代码，希望对大家的学习有所帮助。

Related labels：
php四则运算验证码 php运算验证码 php数字运算验证码
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