Auto increment a variable in session [closed]

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How do I auto increment a value inside a session which will be used multiple times in a certain page.

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$_SESSION['value']++ will do the trick, then output your variable on the page

<?php echo $_SESSION['value']; ?>

Something to consider is that $_SESSION['value'] should be set first, perhaps at the top of your page. You can add this if you wish to check:

<?php echo isset($_SESSION['value'])?$_SESSION['value']:''; ?>