PHP验证码和图片不一致有关问题
PHP验证码和图片不一致问题
今天遇到一个奇怪的问题，前几天后台还登录好好的，今天在登录的时候就出现“验证码和图片不一致”的问题，用户名和密码都正确，就是无法登录，网上查了一下，相关资料也比较少，就发现一条说和系统时间有关系，我也带着怀疑的态度试试，因为服务器时间和北京时间相差几分钟，就改了一下，测试一下果真是这样的。不明白和系统时间有何关系呢？不管怎么样已经可以登录，庆幸一下。
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