使用PHP的安全模式是实现这一目标的一种技术，但是它也过度地限制了用户，而且启用了这个设施之后，一些PHP应用程序就不能发挥作用。
Use of PHP's safe mode is one technique for meeting this goal, but it can also unduly limit users, and some PHP applications simply don't function with this facility enabled.
要确保授权模式得到正确的执行，通常需要在每一个入站通道中启用SSL、安全退出或同时结合两者。
Enabling SSL, a security exit, or some combination of the two on every inbound channel is usually required to assure that your authorization scheme is enforced properly.
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