';
}
break;
case 'image/jpeg':
if (imagetypes() & IMG_JPG) {
$o_im = imageCreateFromJPEG($o_file) ;
} else {
$ermsg = 'JPEG images are not supported
';
}
break;
case 'image/png':
if (imagetypes() & IMG_PNG) {
$o_im = imageCreateFromPNG($o_file) ;
} else {
$ermsg = 'PNG images are not supported
';
}
break;
case 'image/wbmp':
if (imagetypes() & IMG_WBMP) {
$o_im = imageCreateFromWBMP($o_file) ;
} else {
$ermsg = 'WBMP images are not supported
';
}
break;
default:
$ermsg = $image_info['mime'].' images are not supported
';
break;
}
if (!isset($ermsg))
{
$o_wd = imagesx($o_im);
$o_ht = imagesy($o_im);
if (!$t_ht) $t_ht = round($o_ht * $t_wd / $o_wd) ;
//kleiner Bilder nicht skalieren
if ($o_wd<$t_wd) $t_wd=$o_wd;
if ($o_ht<$t_ht) $t_ht=$o_ht;
// thumbnail width = target * original width / original height
$t_im = imageCreateTrueColor($t_wd,$t_ht);
imagealphablending($t_im, false);
$color = imagecolortransparent($t_im, imagecolorallocatealpha($t_im, 0, 0, 0, 127));
imagefill($t_im, 0, 0, $color);
imagesavealpha($t_im, true);
imagecopyresampled($t_im, $o_im, 0, 0, 0, 0, $t_wd, $t_ht, $o_wd,$o_ht);
ImagePng($t_im);
imageDestroy($o_im);
imageDestroy($t_im);
}
return isset($ermsg)?$ermsg:NULL;
}
header('Pragma: public');
header('Cache-Control: max-age=86400');
header('Expires: '. gmdate('D, d M Y H:i:s \G\M\T', time() + 86400));
header("Content-type: image/png");
$url='http://'.$_SERVER['HTTP_HOST'].$_GET['url'];
makeThumbnail($url, (isset($_GET['hoehe'])?$_GET['hoehe']:185), (isset($_GET['breite'])?$_GET['breite']:728));
?>