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When to use session_start ()?

I went through several examples $_SESSION, and I'm a little confused, should I use session_start()every time before I get access or install $_SESSION['variable'], or should I use only session_start()once on the page or as soon as the user has successfully registered?

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2 answers

Use it once per page, at the very top, before planning to use the $ _SESSION variables

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You should always use session_start()once on the page of First Lineyour PHP page if you want to access the entire session in$_SESSION

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