php验证码注意事项
php制作验证码大概有三种方式：
字符
图片
汉字
这三种方式都比较常规，制作过程中需要注意以下几点：
素材要求：字体文件、图片、字符集
字体采用windows自带的：控制面板搜索"font" 打开字体 搜索 "微软雅黑" 把"wsyh.ttf"复制到php代码所在目录
编码格式：UTF8 无BOM
设置方法很简单，选择另存为utf8无bom即可，不到万不得已别用windows的记事本打开程序文件！
记住是UTF8无BOM
版权声明：本文为博主原创文章，未经博主允许不得转载。
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