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How to check if sessions are enabled

What is the easiest way in PHP to determine if sessions are included in the php.ini file for a server. I want to pre-install for my PHP application and just need to check something.

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3 answers
if (!extension_loaded('session')) {
    die('You must enable PHP session support for the system to work.');
}
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You can write a quick script:

<?php

// page1.php
session_start();
$_SESSION['my_index'] = "IT WORKED!";

Then on another page:

<?php
// page2.php
session_start();
echo $_SESSION['my_index'];

//output: IT WORKED
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if ( ! function_exists('session_start')) die;
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