ImageMagick probz in PHP

[Roger Godefroy]

Hi there,

Just a little problem I guess... I have stripped out just an imageresize
string for ImageMagic in a php-file:

<?
exec('convert -quality 100 -antialias -sample 100x100
/var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');
?>

The string would work in a shell, but not using the above php-file. Any
idea's?

Greetz,

Roger

[uws]

I <bf**********@news3.tilbu1.nb.home.nl>, Roger Godefroy skrev:

Just a little problem I guess... I have stripped out just an imageresize
string for ImageMagic in a php-file:
<?
exec('convert -quality 100 -antialias -sample 100x100
/var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');
?>
The string would work in a shell, but not using the above php-file. Any
idea's?

Do you have write permission in the given directory?

mvrgr, Wouter

--
:wq mail uw*@xs4all.nl

don't just call me pessimist :: try and read between the lines -- tool

[Roger Godefroy]

CHMODded the folder and files allready to 777. But no result... Any other
ideas? On another server it works however perfectly using the script
(without resize):

<?php
exec("convert -quality 100 aftermath2.jpg thumb_aftermath.jpg");
?>

But on this new server it won't ??? Strange isn't it?

"uws" <uw*@xs4all.invalid> schreef in bericht
news:yo*****************************************@k likmans.nl...

I <bf**********@news3.tilbu1.nb.home.nl>, Roger Godefroy skrev:

Just a little problem I guess... I have stripped out just an imageresize
string for ImageMagic in a php-file:
<?
exec('convert -quality 100 -antialias -sample 100x100
/var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');
?>
The string would work in a shell, but not using the above php-file. Any
idea's?
Do you have write permission in the given directory?

mvrgr, Wouter

--
:wq mail

uw*@xs4all.nl
don't just call me pessimist :: try and read between the lines --

tool

[Shawn Wilson]

Roger Godefroy wrote:

Just a little problem I guess... I have stripped out just an imageresize
string for ImageMagic in a php-file:

<?
exec('convert -quality 100 -antialias -sample 100x100
/var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');
?>

The string would work in a shell, but not using the above php-file. Any
idea's?

When you tried it in the shell, did you use the exact same file in the exact
same directory?
Do you get any error messages (use -debug and -log)? Just some
guesses/suggestions:

Are you 100% certain the path is correct (did you blindly copy path from old
server)?
Is the original file at least 100x100?
Try 'convert /var/www/html/aftermath2.jpg
/var/www/html/thumb_aftermath.jpg'. That'll at least confirm it's not the
sample, quality or antialias.
Make sure /var/www/html/thumb_aftermath.jpg doesn't exist (could have
trouble replacing).
If you have SSH or Telnet access to the server, try just running the
command.
Try with a different image type. I had a helluva time with PNGs - IM was
configured wrong.

Shawn
--
Shawn Wilson
sh***@glassgiant.com
http://www.glassgiant.com

[Roger Godefroy]

> > Just a little problem I guess... I have stripped out just an

imageresize string for ImageMagic in a php-file: <? exec('convert -quality 100 -antialias -sample 100x100 /var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg'); ?> The string would work in a shell, but not using the above php-file. Any idea's?

When you tried it in the shell, did you use the exact same file in the exact same directory?
Yupz... in the same folder as the php-script and jpg-file using the exact
string as in the php-file.
Do you get any error messages (use -debug and -log)? Just some guesses/suggestions: Are you 100% certain the path is correct (did you blindly copy path from old server)?
Also without the path it would work on the "old" server. On the new server,
it wouldn't work with the full path /var/www/html or just the filename.
Is the original file at least 100x100?
Original file is 1600x1200
Try 'convert /var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg'. That'll at least confirm it's not the sample, quality or antialias.
Also no output. However executing in a shell, it would...
Make sure /var/www/html/thumb_aftermath.jpg doesn't exist (could have trouble replacing).
File not existing...
If you have SSH or Telnet access to the server, try just running the command. Try with a different image type. I had a helluva time with PNGs - IM was configured wrong.

Also when testing with a .gif, no result... :(

Any other ideas?

Greetings,

Roger Godefroy

[Shawn Wilson]

Roger Godefroy wrote:

Just a little problem I guess... I have stripped out just an imageresize string for ImageMagic in a php-file: <? exec('convert -quality 100 -antialias -sample 100x100 /var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg'); ?> The string would work in a shell, but not using the above php-file. Any idea's?

When you tried it in the shell, did you use the exact same file in the

exact same directory?

Yupz... in the same folder as the php-script and jpg-file using the exact
string as in the php-file.

Do you get any error messages (use -debug and -log)? Just some

guesses/suggestions:

Are you 100% certain the path is correct (did you blindly copy path

from old server)?

Also without the path it would work on the "old" server. On the new server,
it wouldn't work with the full path /var/www/html or just the filename.

Is the original file at least 100x100?

Original file is 1600x1200

Try 'convert /var/www/html/aftermath2.jpg

/var/www/html/thumb_aftermath.jpg'. That'll at least confirm it's not

the sample, quality or antialias.

Also no output. However executing in a shell, it would...

Make sure /var/www/html/thumb_aftermath.jpg doesn't exist (could have

trouble replacing).

File not existing...

If you have SSH or Telnet access to the server, try just running the

command. Try with a different image type. I had a helluva time with

PNGs - IM was configured wrong.

Also when testing with a .gif, no result... :(

Hmmm...

Did you try the log?

Maybe try something simple, like
passthru("ls -l /var/www/html/");

If you get a list of stuff in that directory, try passthru with your convert
command...

Maybe this is on the right track:
From PHP.net (exec function)
Note that when in 'Safe Mode' you must have the script or program you are
trying to execute in the 'safe_mode_exec_dir'. You can find out what this
directory is by using phpinfo().

HTH,
Shawn

--
Shawn Wilson
sh***@glassgiant.com
http://www.glassgiant.com

[Roger Godefroy]

Hi,

I got a result using the ls-command. But not using the convert-command. The
server isn't in safe mode (checked using phpinfo()). I just got the server
error-log:

----[ SNAP ]----

[2003-07-24 15:56:12]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 15:56:28]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 15:59:59]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:00:16]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:02:48]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:06:06]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:06:12]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:10:22]: info: (real/target/actual) uid: (admin7/admin/admin)
gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

----[/SNAP]----

Any idea?
Greetings,

Roger

"Shawn Wilson" <sh***@glassgiant.com> schreef in bericht
news:3F***************@glassgiant.com...

Roger Godefroy wrote:

> Just a little problem I guess... I have stripped out just an

> imageresize string for ImageMagic in a php-file:

>

> <?

> exec('convert -quality 100 -antialias -sample 100x100

> /var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');

> ?>

>

> The string would work in a shell, but not using the above php-file.

> Any idea's?

When you tried it in the shell, did you use the exact same file in the

exact same directory?

Yupz... in the same folder as the php-script and jpg-file using the exact string as in the php-file.

Do you get any error messages (use -debug and -log)? Just some

guesses/suggestions:

Are you 100% certain the path is correct (did you blindly copy path

from old server)?

Also without the path it would work on the "old" server. On the new server, it wouldn't work with the full path /var/www/html or just the filename.

Is the original file at least 100x100?

Original file is 1600x1200

Try 'convert /var/www/html/aftermath2.jpg

/var/www/html/thumb_aftermath.jpg'. That'll at least confirm it's not

the sample, quality or antialias.

Also no output. However executing in a shell, it would...

Make sure /var/www/html/thumb_aftermath.jpg doesn't exist (could have

trouble replacing).

File not existing...

If you have SSH or Telnet access to the server, try just running the

command. Try with a different image type. I had a helluva time with

PNGs - IM was configured wrong.

Also when testing with a .gif, no result... :(

Hmmm...

Did you try the log?

Maybe try something simple, like
passthru("ls -l /var/www/html/");

If you get a list of stuff in that directory, try passthru with your

convert command...

Maybe this is on the right track:
From PHP.net (exec function)
Note that when in 'Safe Mode' you must have the script or program you are
trying to execute in the 'safe_mode_exec_dir'. You can find out what this
directory is by using phpinfo().

HTH,
Shawn

--
Shawn Wilson
sh***@glassgiant.com
http://www.glassgiant.com

[Roger Godefroy]

I would get an error on the header() row (Internal Server Error 500).

The paths are also without result...

Maybe a server-error?

Greetz...
"Shawn Wilson" <sh***@glassgiant.com> schreef in bericht
news:3F***************@glassgiant.com...

Roger Godefroy wrote:

Hi,

I got a result using the ls-command. But not using the convert-command. The server isn't in safe mode (checked using phpinfo()). I just got the server error-log:

----[ SNAP ]----

[2003-07-24 15:56:12]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 15:56:28]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 15:59:59]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:00:16]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:02:48]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:06:06]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:06:12]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

[2003-07-24 16:10:22]: info: (real/target/actual) uid: (admin7/admin/admin) gid:

(admin7/admin/admin) cmd: php-script alt_doc_root:
/home/virtual/site7/fst/var/

www chroot: 1

----[/SNAP]----

Any idea?

Greetings,

Roger

"Shawn Wilson" <sh***@glassgiant.com> schreef in bericht
news:3F***************@glassgiant.com...

Roger Godefroy wrote:

> > > Just a little problem I guess... I have stripped out just an
>
> > > imageresize string for ImageMagic in a php-file:
>
> > >
>
> > > <?
>
> > > exec('convert -quality 100 -antialias -sample 100x100
>
> > > /var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg'); >
> > > ?>
>
> > >
>
> > > The string would work in a shell, but not using the above php-file. >
> > > Any idea's?
>
> >
>
> > When you tried it in the shell, did you use the exact same file in the >
> > exact same directory?
>
> Yupz... in the same folder as the php-script and jpg-file using the exact

> string as in the php-file.
>
> > Do you get any error messages (use -debug and -log)? Just some
>
> > guesses/suggestions:
>
> >
>
> > Are you 100% certain the path is correct (did you blindly copy path >
> > from old server)?
>
> Also without the path it would work on the "old" server. On the new

server,

> it wouldn't work with the full path /var/www/html or just the filename. >
> > Is the original file at least 100x100?
>
> Original file is 1600x1200
>
> > Try 'convert /var/www/html/aftermath2.jpg
>
> > /var/www/html/thumb_aftermath.jpg'. That'll at least confirm it's not >
> > the sample, quality or antialias.
>
> Also no output. However executing in a shell, it would...
>
> > Make sure /var/www/html/thumb_aftermath.jpg doesn't exist (could have >
> > trouble replacing).
>
> File not existing...
>
> > If you have SSH or Telnet access to the server, try just running the >
> > command. Try with a different image type. I had a helluva time with >
> > PNGs - IM was configured wrong.
>
> Also when testing with a .gif, no result... :(

Hmmm...

Did you try the log?

Maybe try something simple, like
passthru("ls -l /var/www/html/");

If you get a list of stuff in that directory, try passthru with your

convert

command...

Maybe this is on the right track:
From PHP.net (exec function)
Note that when in 'Safe Mode' you must have the script or program you are trying to execute in the 'safe_mode_exec_dir'. You can find out what this directory is by using phpinfo().

This is a tough one.

Maybe try
/home/virtual/site7/fst/var/www/html/aftermath2.jpg
/home/virtual/site7/fst/var/www/html/thumb_aftermath.jpg
as your paths.

Or try this and only this in a file (make sure there's no spaces or enters
before or after the <?PHP and ?>!!!):

<?PHP
header("image/jpg");
$cmd = "convert xc:#000000 -resize '500x150!' -gravity 'Center' -pointsize

'64' -fill '#000099' -draw 'text -4,-16 \"Hello World\"' jpg:-";
passthru($cmd);
?>

Or it might be header("image/jpeg"); I'm not sure if it matters... You should get a JPG on your browser. If this works, it'll tell you that the problem is likely with your image paths...

Shawn
--
Shawn Wilson
sh***@glassgiant.com
http://www.glassgiant.com

[Roger Godefroy]

> > > This is a tough one.

Maybe try
/home/virtual/site7/fst/var/www/html/aftermath2.jpg
/home/virtual/site7/fst/var/www/html/thumb_aftermath.jpg
as your paths.

Or try this and only this in a file (make sure there's no spaces or enters before or after the <?PHP and ?>!!!):

<?PHP
header("image/jpg");
$cmd = "convert xc:#000000 -resize '500x150!' -gravity

'Center' -pointsize '64'

-fill '#000099' -draw 'text -4,-16 \"Hello World\"' jpg:-";
passthru($cmd);
?>

Or it might be header("image/jpeg"); I'm not sure if it matters...

You should

get a JPG on your browser. If this works, it'll tell you that the

problem is

likely with your image paths...

I'm an idiot. The header line should be:

header("Content-type: image/jpg");
or
header("Content-type: image/jpeg");

My apologies...

The headers works fine now, however with a standard not-found-image (red
cross) on the screen. So again no result :(

[Andy Hassall]

On Thu, 24 Jul 2003 13:59:59 +0200, "Roger Godefroy" <godefroy@(no
spam)home.nl> wrote:

Just a little problem I guess... I have stripped out just an imageresize
string for ImageMagic in a php-file:

<?
exec('convert -quality 100 -antialias -sample 100x100
/var/www/html/aftermath2.jpg /var/www/html/thumb_aftermath.jpg');
?>
http://uk.php.net/manual/en/function.exec.php

exec has the facility to give you the return code back; use it and post the
value, it may give a clue.
The string would work in a shell, but not using the above php-file. Any
idea's?

Your webserver runs in potentially entirely different environment from your
shell.

Is convert on your webserver's PATH? If not, use a full path to convert (do
this anyway).

Does the webserver user have permissions to read and write the files?

Does the webserver user have permissions to execute convert?

--
Andy Hassall (an**@andyh.co.uk) icq(5747695) (http://www.andyh.co.uk)
Space: disk usage analysis tool (http://www.andyhsoftware.co.uk/space)