php GD image syntax error

See more:

PHP

Hi I have a php image, but it wont show. I get the The image cannot be displayed becouse it contains errors Error.
Whats wrong there?

The code is from a tuttorial
Link

<?php
$image='bubble2.jpg';
$i = imagecreatefromjpeg($image);
	
   
 
	

	
	
	
$mult=5;
$w=imagesx($i);
$h=imagesy($i);
$image=imagecreatetruecolor($w*$mult,$h*$mult);
imagecopyresized($image,$i,0,0,0,0,$w*$mult,$h*$mult,$w,$h);
imagedestroy($i);
$w*=$mult;
$h*=$mult;
$im=imagecreatetruecolor($w,$h);
$removed=imagecolorallocate($im,($background>>16)&0xFF,($background>>8)&0xFF,$background&0xFF);
imagefill($im,0,0,$background);
imageantialias($im,true);
$nh=$h-($h*$gradient);
for ($x=0; $x<$w; $x++) {
 $ni=(($rightdown) ? $x : $w-$x);
 $p=intval($h-(($ni/$w)*$nh));
 if (($p%2)<>0)
  $p-=1;
 $nx=intval(($p-$h)/2);
 imagecopyresampled($im,$image,$x,0,$x,$nx,1,$p,1,$h-1);
 imageline($im,$x,0,$x,-$nx-1,$background);
 imageline($im,$x,$h-1,$x,$h+$nx,$background);
}
imagedestroy($image);
imagefilter($im,IMG_FILTER_SMOOTH,10);
$i=imagecreatetruecolor($w/$mult,$h/$mult);
imageantialias($i,true);
imagecopyresampled($i,$im,0,0,0,0,$w,$h,$w*$mult,$h*$mult);
imagedestroy($im);
header('Content-Type: image/png');


?>