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Editorial Team
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Asked: 2026-05-15T00:27:50+00:00

I have this code : <?php session_start(); echo .$_SESSION[‘eventnum’].; $urlRefresh = testremot.php; header(Refresh: 5;

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I have this code :

<?php
session_start();
echo "".$_SESSION['eventnum']."";
$urlRefresh = "testremot.php";
header("Refresh: 5; URL=\"" . $urlRefresh . "\"");
?>

but the header doesn’t work and this warning appear when I try to run this code:

Warning: Cannot modify header information – headers already sent by (output started at C:\xampp\htdocs\remot\testremot.php:3) in C:\xampp\htdocs\remot\testremot.php on line 5**

Can you please help me?

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1 Answer

  1. Editorial Team

    Ok, lets see what you have in line 3:

    echo "".$_SESSION['eventnum']."";

    Obviously you are generating output (echo) in this line and this line comes before you call header.
    Move it below header:

    session_start();
$urlRefresh = "testremot.php";
header("Refresh: 5; URL=\"" . $urlRefresh . "\"");
echo "".$_SESSION['eventnum']."";

    But note (from Wikipedia):

    The W3C’s Web Content Accessibility Guidelines (7.4) discourage the creation of auto-refreshing pages, since most web browsers do not allow the user to disable or control the refresh rate.

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