Problem mit header("Content-type: image/jpg");

[HP-Bauer]

Online-Beispiel ist schlecht, aber hier ist der Code:

Skript zur Bilderzeugung:

<?PHP
if (isset($_GET["file"])) $file = $_GET["file"];
else $file = null;
if (isset($_GET["imgsize"])) $imgsize = $_GET["imgsize"];

if ($file != null && is_readable($file)) {
       $size = @getimagesize($file);
       $imgwidth = $size[0];
       $imgheight = $size[1];
       if ($imgsize==750) {
          if ($imgwidth > 750) $maxwidth = 750;
          else $maxwidth = $imgwidth;
       } else {
         $maxwidth = $imgsize;
       }

if ($imgwidth > $maxwidth) {
          $thheight = $imgheight / ($imgwidth / $maxwidth);
          $thheight = round($thheight);
          $thwidth = $maxwidth;
       } else {
         $thwidth = $imgwidth;
         $thheight = $imgheight;
       }

$source = ImageCreateFromJPEG ($file);
       header("Content-type: image/jpg");
       $dest  = imagecreatetruecolor($thwidth, $thheight);

imagecopyresampled ($dest, $source, 0, 0, 0, 0, $thwidth, $thheight, $imgwidth, $imgheight);
       imagejpeg($dest);

imagedestroy($dest);
       imagedestroy($source);

}
?>

Skript zur Linkerzeugung und Einfügen des verkleinerten Bildes:

<?PHP
$size = @getimagesize($imgf);
$imgwidth = $size[0] + 20;
$imgheight = $size[1] + 20;

if ($size[0] > 150) {
   echo "<a href='resizeimage.php?file=$imgf&imgsize=750'";
   echo "target='_blank' onclick="NewWindow(";

echo "'resizeimage.php?file=$imgf&imgsize=750'";
   echo ",'_blank'";
   echo ",'$imgwidth','$imgheight','no','center'); return false" id='link-bold-m'>";
}
echo "<img src='resizeimage.php?file=$imgf&imgsize=150' border='0' alt='$title'>";
if ($size[0] > 150) echo "</a>";
?>

MfG,
HP-Bauer