php doesn't redirect correctly

Question

I'm running a apache2 server on my raspberry pi that's hosting my website. By clicking on a link on my website i'm able to change some values in a textfile.

Now everything works just fine but when the link in my script redirects to the homepage, there seems to be something going wrong.

After redirecting the url isn't 192.168.1.101/index.php , instead it stays 192.168.1.101/scripts/beheerSOD.php?sproeier=1

If I refresh the page the url changes to 192.168.1.101/index.php but the script also executes again

Does someone know what's going on?

Thank you in advance!

HTML link to script (index.php)

<a href="scripts/beheerSOD.php?sproeier=1">Klik op mij!</a>

Script that redirects in the end (scripts/beheerSOD.php)

<?php
if(isset($_GET['sproeier'])){

    $sproeier = $_GET['sproeier'];
    $SODtxt = file_get_contents('../SOD.txt');
    $sproeierIO = $SODtxt{($sproeier-1)};
    if($sproeierIO=="0"){
        $sproeierIO="1";
    }
    else{
        $sproeierIO="0";
    }
    $eerst = substr($SODtxt,0,$sproeier-1);
    $laatst = substr($SODtxt,$sproeier,strlen($SODtxt));
    $SODtxt = $eerst.$sproeierIO.$laatst;
    file_put_contents('../SOD.txt', $SODtxt);
    header("Location: http://192.168.1.101/index.php");
}

?>

Answer 1

尝试将标头语句放在脚本的顶部。