getimagesize of imagecreatetruecolor

[iwarlord]

I'm wanting to find the dimensions of an image I have created. I have tried the following code

 

<?php

header ('Content-type: image/png');

$im = @imagecreatetruecolor(120, 20)

      or die('Cannot Initialize new GD image stream');

$text_color = imagecolorallocate($im, 233, 14, 91);

 

list($width, $height, $type, $attr) = getimagesize($im);

 

 

imagestring($im, 1, 5, 5,  "".$width."", $text_color);

imagepng($im);

imagedestroy($im);

?>

 

but it doesn't seem to work. Can anyone help me?

 

Thanks.

[GingerRobot]

The first parameter of the getimagesize should be a filename, not an image resource. Surely you know the size of an image if you've just created it?