Image Upload API XML (declaration allowed only at the start of the document)

Question

My problem is a PHP & XML problem, i work with a friend on a image upload api, and we have a problem by creating the XML string.

image.php:

$simage = new SimpleImage();
    $xml = new SimpleXMLElement('<bb-upload></bb-upload>');
    if($key == get_key()){
        require 'upload.php';
    }
    else{
        $xml->addChild('error', "102 Fehlerhafter Zugriffs Key");
    }
    header("Content-type:text/xml;charset=utf-8");
    echo $xml->asXML();

upload.php:

if ($_FILES["image"]["error"] > 0) {
$xml->addChild('error', "101 Bilder fehler: " . $_FILES["image"]["error"]);
}
else{
  $data = array(
        'tmp'   => $_FILES["image"]["tmp_name"],
        'save'  => time().'-'.rand(1, 1000).'.jpg',
    );

    $filename = $data['save'];

    $simage->load($data['tmp']);
    $simage->resize(350,300);
    $simage->save("../data/$filename");

    $xml->addChild('error', "0");
    $xml->addChild('src', "http://*******.de/bb-image/data/$filename");
}

the problem is if we connect on the XML all is okay but if we upload a image, we become this error: error on line 1 at column 6: XML declaration allowed only at the start of the document

and the output like this:

?<?xml version="1.0"?>
<bb-upload><error>0</error><src>http://*****.de/bb-image/data/1355858033-712.jpg</src>     </bb-upload>

why is a ? in the code !!

thanks it work. I look in the HEX code the upload.php and found it :p — Black, Dec 19 '12 at 10:26
How i can do this ? I`m new on Stackoverflow. i can only Share | Edit | Delete or Flag but i need the close button =( http://stackoverflow.com/faq#close — Black, Dec 21 '12 at 15:25
I left an answer so you can accept it. If you dislike that, I suggest you write an answer your own (also accepted). @Charles: You might want to create an answer out of your comment, too. --- in the end please mark this question as answered, so it disappears from the unanswered listing. Thank you! — hakre, Jan 01 '13 at 22:18

score 0 · Accepted Answer · answered Jan 01 '13 at 22:17

It is likely that you have some character before the beginning of the XML document.

That is normally causing the error.

Open the script in a hex viewer, this normally shows the often otherwise in an editor invisible characters. Remove these, e.g. save the PHP files without BOM (you should always do that anyway).

Image Upload API XML (declaration allowed only at the start of the document)

1 Answers1