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Editorial Team
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Asked: 2026-06-02T19:59:44+00:00

I am developing w web site. Here I have included a thumnail page. It’s

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I am developing w web site. Here I have included a thumnail page. It’s working well in my localhost. But when I uploaded its show me an error see 

Warning: Cannot modify header information - headers already sent by (output started at /mydomain/demo1/admin/thumbnail.php:50) in /mydomain/demo1/admin/act-addVehicle.php on line 191

my code

if(move_uploaded_file ($tmpName,$path.$actual_image_name)){
                        $succ=1;
                        chmod("$add",0777);
                        $imgSucc=1; 
                            //strt image thumbnail
                        include("./thumbnail.php");
                        // ends
                        }else{ echo "Failed to upload file Contact Site admin to fix the problem"; 
                        exit;}

How I avoid this error
is there any settings in php ini ?

does anyone know ?
please reply

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1 Answer

  1. Editorial Team

    Without seeing thumbnail.php‘s code its hard to tell exactly what’s happening, but basically its outputting something before act-addVehicle.php on line 191 is setting another header.

    Most likely a single space at the end of the script. Check after ?> perhaps line 50 if just after.

    You could wrap the include(‘thumbnail.php’) into an ob_start() and ob_end_clean() but that will not solve the underlying issue of outputting before setting a new header.

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