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Full Discussion: trouble with shell_exec()
Top Forums Web Development trouble with shell_exec() Post 302514409 by Corona688 on Friday 15th of April 2011 03:50:26 PM
Old 04-15-2011
Good lord, I should have known better than to google "man latex"... Smilie

When you run it yourself, it creates them in the current directory. When you run it from PHP like that, it will try to create them inside the same folder as the PHP script, I think. Probably not a folder you want apache to be able to modify! Give latex a -output-directory parameter to make latex write them somewhere else.

You'll want this folder to have the apache group and be group-writable.

Code:
# as root
chown :apache /path/to/folder
chmod g+rwx /path/to/folder

When your webserver creates files in /path/to/folder they will belong to apache:apache. This won't be a problem I think; you should be able to read and delete them since the directory belongs to you. If the permissions aren't permissive enough, you can do chmod o+rw inside your php script after latex finishes.

Secondly, even if you get PHP executing it like that, I don't think PHP is actually going to dump the output file's contents into the variable. I think you'll have to $f=fopen("/path/to/filename"); while($var=fgets($f)) { ... } to process it there.

Last edited by Corona688; 04-15-2011 at 05:07 PM..
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rmf(1mh)																  rmf(1mh)

Name
       rmf - remove folder

Syntax
       rmf [ +folder ] [ -help ] [ -[no]interactive ]

Description
       The  command  removes all of the messages within the current folder, and then removes the folder itself.  If there are any files within the
       folder which are not part of MH, they are not removed, and an error message is displayed.

       You can specify a folder other than the current folder by using the +folder argument.  If you do not specify a folder, and cannot find  the
       current folder, asks you whether you want to delete instead.

       If the current folder is removed, it makes current.

       Note that the command irreversibly deletes messages that do not have other links, so use it with caution.

       If  the folder being removed is a sub-folder, the parent folder becomes the new current folder, and tells you that this has happened.  This
       provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list  and  returning  to  the  current
       folder from which the list was extracted.

       Using to delete a read-only folder deletes the private sequence and current message information from the file, without affecting the folder
       itself.	If you have sub-folders within a folder, you must delete all the sub-folders before you can delete the folder itself.

Options
       -help	 Prints a list of the valid options to this command.

       -interactive
       -nointeractive
		 Asks for confirmation before deleting a folder.  By default, deletes a folder and its messages without asking	for  confirmation.
		 If  you  specify  the	-interactive option, asks if you are sure before deleting the folder.  You are advised to use this option,
		 since when deletes a folder its contents are lost irretrievably.

Examples
       This example shows how asks for confirmation when the -interactive option is used:
       % rmf -interactive +test
       Remove folder "test"? y

Profile Components
       Path:   To determine the user's Mail directory

Files
       The user profile.

See Also
       rmm(1mh)

																	  rmf(1mh)
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