PHP解析错误 - imagecreatetruecolor

$img = @imagecreatetruecolor(32, 32) or return false;

Why doesn't this work?

I get a parse error, but the code looks ok?

The same with this:

imagefill($img, 0, 0, $transparent) or return false;

You can't use return like this. You must use an if statement instead:

if (!$img = @imagecreatetruecolor(32, 32)) {
   return false;
}