Simple Image Resize

[rsmith]

Hey again everyone... I need to write a small script that passes the path of a stored image in my database to correct commands for resizing it. I've never done anything with image manipulation but have researched ways to do it. It looks like imagecreatefromjpeg() is the way to go but what I need to know is how to open the file, resize it to set dimensions and then save over itself so that it alters the original file and not create a copy. Any guidance / examples are greatly appreciated.

Overview:
1. Get the id passed to the script from the URL. (done)
2. Query the db and get the path to the image (done)
3. Resize the image to a set of 210 x 158 (width x height) -- not done
4. Save the resize as the original image without creating a copy or changing filename.

TIA

[Weedpacket]

A simple example can be found on the [man]imagecopyresized[/man] page; [man]imagecopyresampled[/man] generally produces the better result, and works in exactly the same way.

[rsmith]

Thanks Weedpacket. I just went through it and here's the script I have so far. Unfortunately it doesn't seem to produce the image, instead it just shows me the url of the script in the browser...

<?
	        //Get the type and property id then resize the photo.
				$type = mysql_real_escape_string($_GET['type']);
	        	$id = mysql_real_escape_string($_GET['id']);
	        	$path = mysql_real_escape_string($_GET['path']);

        	if(isset($type) AND isset($id)){
	        	if($type == "property"){
						$size = getimagesize($path);
						$image = imagecreatefromjpeg($path);

						$origWidth = $size[0];
						$origHeight = $size[1];

						$newWidth = 210;
						$newHeight = 158;

						$image_resized = imagecreatetruecolor($newWidth, $newHeight);
						imagecopyresized($image_resized, $image, 0, 0, 0, 0, $newWidth, $newHeight, $origWidth, $origHeight);

						header("Content-type: image/jpeg");
						imagejpeg($image_resized);
					}
				}

 ?>