php imagemagick.. user edits pictures

abda53

is there a script out there or a way to use imagemagick to edit pictures?

i have an image hosting site. i want to be able to let the use edit their picture (mainly resizing) if they want. i dont want to do it when they upload, only after they upload. alot of people dont know or have programs to resize images, so they can do it on my site. also, they will make the changes, and save it as the same same on my site, and also updating the database fields that contain the image width/height, and also image size, and date updated

im not asking for someone to write the entire code for me, but just if anyone has seen or know if this can be done. ive seen a few sites where you can upload a file, and manipulate it with imagemagick.. so im sure it can be done..

anyone got any ideas or can point me to a good site? thanks in advance

tbach2

Here's an idea to get you started... It uses convert, but I think mogrify works the same way (notice the name of the function-- I think that's what I used first :eek: )

This is intended for resizing upon upload, but all you have to do is just provide the correct file to work with. Then fread the file located at /tmp/$tmpid

function mogrify($max,$tmpid) {
	$size = GetImageSize($_FILES['pic_data']['tmp_name']);
	$image_width = $size[0];
	$image_height= $size[1];
	if($image_height>$max || $image_width>$max) {
		if($image_height>$image_width) {
			$sizefactor = (double)($max/$image_height);
		} else {
			$sizefactor = (double)($max/$image_width);
		}
		$newwidth = (int)($image_width*$sizefactor);
		$newheight= (int)($image_height*$sizefactor);

	$newsize = $newwidth . "x" . $newheight;
	$cmd = sprintf("/usr/X11R6/bin/convert -geometry %s %s %s 2>&1",
		  		$newsize,
		  		$_FILES['pic_data']['tmp_name'],
		  		'/tmp/'.$tmpid // note: uniqueid()
		  		);
	exec($cmd,$exec_output,$exec_retval);
	if($exec_retval>0) {
		print "ERROR: exec() error: $exec_output[0]";
	} else {
		print "Image was resized from " . $image_width . "x" . 
			$image_height . " to $newsize <br>";
		$image_height = $newheight;
		$image_width  = $newwidth;
	}
} else {
	copy($_FILES['pic_data']['tmp_name'],'/tmp/'.$tmpid );
}
$ret_val['height'] = $image_height;
$ret_val['width']  = $image_width;

return $ret_val;
}

abda53

right.. but i dont want them to upload it.. i wanna be able to pull the name of the file from the server, like this..

image01.jpg (click here to edit)
image02.jpg (click here to edit)
image03.jpg (click here to edit)

something like that. and once the user clicks on it, a new screen will come up and let them edit that certain picture..

tbach2

right... so replace the $_FILES[] with the location of the file you want to edit. You've got everything you need to make the conversion happen. You'll have to rewrite the function a bit. But it's up to you to get the information to it...

abda53

thanks. i havent messed with imagemagick before.. so sorry if i sounded dumb.. ill start messin with it and see what i can come up with. thanks again