Image resize

Davy

Hello once again PHPBuilders !

I know it is possible to manipulate images but I need to know what modules and/or version are needed in order to take for example:

a 800 x 600 px image, resize it to say 100 x 75 pixels as a thumbnail and save it as a new file. No flashy image manipulation, just a resize. I know how I might do it using PHP (there are tutorials all over the net) but I need to know so I can recommend these upgrades to a client.

Thank you for your time 🙂

gufmn

I recently was looking to do the same thing. I started out trying to use the gd libs and got it working but it was kinda bloated and buggy. I opted to use imagemagick server side and it works great. Here's the function I wrote (assuming you're on a *nix box w/ access to imagemagick)

function createthumb($oldName,$newName,$new_w,$new_h){
	exec("/usr/local/nf/bin/convert -size ".$new_w."x".$new_h." ".$oldName." " .$newName);
}

You will, of course, have to alter the path to imagemagick's convert command.
It works perfectly and isn't buggy. GD doesn't support .gif files, imagemagick does 🙂.

Davy

That looks easy enough! 🙂

Thanks man..

Just one last thing... that path "/usr/local/nf/bin/convert" it's not the web path is it? It's the path on the server... but how can I find out on any server how to find this bit? I haven't worked much on a specific server OS..just on code that works cross platform (thank God)

I wouldn't know where this path is, how to find it, etc.

gufmn

It would prolly have to be on a case by case basis. I was fortunate enough that my host had the path listed on their site.

If you just want to find it on your server, assuming you have ssh access, you could try something like:

locate image | grep convert

gufmn

Actually, I just apt-installed it on my home machine via ssh. It looks as though the convert utility is auto-added to the system path. So assuming imagemagick is installed, you could leave out the path entirely:

exec("convert...."

gufmn

Any luck?

btw, you have the best sig here. But you don't really need the first $beverage = 0; 😉

Davy

Yeah I just used

<?php
echo $_SERVER['DOCUMENT_ROOT'];
?>

😃

Now all I need to do is get my client's server service to install ImageMagick before I give him a quote on the entire project.

Thx on tha sig compliment 🙂 somebody nicked my idea on here but for Pepsi :mad:

rurbaniak

Originally posted by Davy
Yeah I just used
<?php
echo $_SERVER['DOCUMENT_ROOT'];
?>
😃

Now all I need to do is get my client's server service to install ImageMagick before I give him a quote on the entire project.

Thx on tha sig compliment 🙂 somebody nicked my idea on here but for Pepsi :mad: [/B]

Another thing, that isn't mentioned, is that PHP Safe Mode will need to be OFF.

Using the exec(), or system() commands with Safe Mode ON will do you no good. I just found this out myself, not too long ago. I fortunately have my own servers , so being able to do some try and error was easy.

rurbaniak

To follow up with what I just said about the Safe Mode needing to be OFF, that isn't actually true. I just found this that would make it easier.

Simply modify the PHP.INI file where the safe_mode_exec_dir= is and you'll be able to run executeables in that directory. Here's the link. http://us2.php.net/manual/en/features.safe-mode.php#ini.safe-mode-exec-dir

Davy

Bah! His cowboy server company doesn't have ImageMagick and aren't prepared to install it! Grr

They do however have those pain-in-ass GD libs but that may prove to be a problem as that appears alot harder then IM.

Maybe I'll tell this client I won't do it and save my self the bother of working on a crud server setup.

I hate stupid clients....