image handling

resize offsite image

grabs an image of another server and displays a resized version.
can save thumbnails from remote images.

! make sure there is NO output before this script, no blankspace, no nothing
or you'll get a "headers already sent" error !

full source of resize offsite image [ line 1 - 37 ] | download resize offsite image

1	<?php
2	// make sure there is NO output before this script, no blankspace, no nothing
3	// or you'll get a "headers already sent" error
4	// the image from another site
5	$off_site = 'http://fundisom.com/supersonnig/nyc/4.jpg';
6	// read binary stream
7	$fp = fopen ($off_site, 'rb') or die('Unable to open file '.$off_site.' for reading');
8	$buf = '';
9	while (!feof ($fp))
10	{
11	$buf .= fgets($fp, 4096);
12	}
13	// output header
14	header('Content-Type: image/jpeg');
15	$data = $buf;
16	//set new height
17	$size = 150;
18	$src = imagecreatefromstring ($data);
19	$width = imagesx($src);
20	$height = imagesy($src);
21	$aspect_ratio = $height/$width;
22	//start resizing
23	if ($height <= $size)
24	{
25	$new_w = $width;
26	$new_h = $height;
27	} else {
28	$new_h = $size;
29	$new_w = abs($new_h / $aspect_ratio);
30	}
31	$img = imagecreatetruecolor ($new_w,$new_h);
32	//output image
33	imagecopyresampled ($img,$src,0,0,0,0,$new_w,$new_h,$width,$height);
34	// determine image type and send it to the browser
35	imagejpeg($img, '', 90);
36	imagedestroy($img);
37	?>

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