Reading session data

Once you have put your data safely away, it becomes immediately available in the $_SESSION superglobal array with the key of the variable name you gave it. Here is an example of setting data and reading it back out again:

<?php
    $_SESSION
['foo'] = 'bar';
    print
$_SESSION['foo'];
?>

Unlike cookies, session data is available as soon as it is set, which can be quite an advantage.

 

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