Php A Session Had Already Been Started

Posted:

Monday, January 6th, 2014

Last modified:

Tuesday, May 5th, 2015

Topics:

PHP

Problem

PHP generates the following notice: A session had already been started - ignoring session_start().

Solution

Check that $_SESSION is not already set before starting a new session.

<?php
if (!isset($_SESSION)) {
    session_start();
}
?>

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