PHP's Safe mode is something you should learn to work with whether you are a PHP developer or a system administrator. Safe mode is a set of configuration options that allow the system administrator to alter the behavior of the PHP interpreter by implementing security measures. From a system administrator's point of view, this means you must learn how to implement this feature properly, without making it impossible for developers to set up their applications on your server. From a developer's point of view, you must learn what possibly could get broken in your application if this feature is turned on.

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