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I am working on the security of my site and would like to know if a malicious user can override some php function of my site if by chance he finds out what the name of this function?
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There are very rare cases that this can happen. I wrote an example, from a look: https://ideone.com/IcHcqz
– Francisco
depends if he has access to your server it is obvious that yes, and can also subscribe using shellinjection
– 13dev
Only if you’re wearing something like
eval($_GET['xyz']);and the functions are "Anonimas" (closure) in variables. There is no way the user can directly access what is running time in your back-end scripts unless you create this gap.– Guilherme Nascimento