php没有安全漏洞,呵呵.要注意设置_PHP
如果你的php.ini中register_globals = On, 所有post, get, cookie, session的同名变量就会搅和在一起,
可以用$HTTP_*_VARS["username"]来判断你想要的那个变量.
但是即使同名, 在php.ini中variables_order = "GPCS"也会按照优先级别来判断, 等级低的值没法冲掉等级高的
所以, 如果一开始就用session_register("username")是明智的, 也可以用session_is_registered来判断变量是否已经注册.
这是一个例子:
if (!session_is_registered("username")) {
$user_name= "";
session_register("username");
}
同时保证你的php.ini中, variables_order = "GPCS" (缺省) S即session要放在最后, 优先.
register_globals = On有些浪费系统资源, 在优化配置中被关掉, 这样也避免了出现所谓漏洞.
因为以前碰到过这个问题, 给大家参考一下.
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