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Full Discussion: trouble with shell_exec()
Top Forums Web Development trouble with shell_exec() Post 302514400 by tyrick on Friday 15th of April 2011 03:24:33 PM
Old 04-15-2011
trouble with shell_exec()
If you aren't familiar with LaTeX, don't stress.. it's just a document markup language that I use for creating Math documents.

Anyway, if I execute "latex /home/destructo/Desktop/example.tex" inside my command prompt (ubuntu), it will create the desired document... I decided to try to create a localhost website to aid with this process and was suggested to use the shell_exec() function. However, I quickly found this to be a problem..

When I use the following code, I receive an error.
Code:
$output = shell_exec('latex /home/destructo/Desktop/example.tex');
echo "<pre>$output</pre>";

The error is the following:
Quote:
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian)
entering extended mode
! I can't write on file `example.log'.
(Press Enter to retry, or Control-D to exit; default file extension is `.log')
Please type another transcript file name:
! Emergency stop
No pages of output.
I am hoping someone might be able to help me understand why this is happening.. Or if there is an alternate way to accomplish my goals...I am supposing it is a permissions problem..??

Anyway, it's my first post here.. Be kind! >.<

-Tyrick
 

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LEARN ABOUT REDHAT

latex

LATEX(1)						      General Commands Manual							  LATEX(1)

NAME

       latex, elatex, lambda, pdflatex - structured text formatting and typesetting

SYNOPSIS

       latex [ first line ]

DESCRIPTION

       This manual page is not meant to be exhaustive.	The complete documentation for this version of TeX can be found in the info file or manual
       Web2C: A TeX implementation.

       The LaTeX language is described in the book LaTeX - A Document Preparation System.  LaTeX is a TeX macro package, not a modification to the
       TeX source program, so all the capabilities described in tex(1) are present.

       The LaTeX macros encourage writers to think about the content of their documents, rather than the form.	The ideal, very difficult to real-
       ize, is to have no formatting commands (like ``switch to italic'' or ``skip 2 picas'') in the document at all; instead, everything is  done
       by specific markup instructions: ``emphasize'', ``start a section''.

       The  primary  source  of  documentation	for LaTeX is the LaTeX manual referenced below, and the local guide in the file local-guide.tex or
       local.tex or some such.

       elatex is the e-TX extended mode version of LaTeX format.

       lambda is the Omega version of the LaTeX format.

       pdflatex is the pdfTeX version of the LaTeX format.

       On some systems latex209 and slitex are available for compatibility with older versions of LaTeX.  These should not be used for new texts.

SEE ALSO

       amslatex(1), amstex(1), tex(1),
       Leslie Lamport, LaTeX - A Document Preparation System, Addison-Wesley, 1985, ISBN 0-201-15790-X.

Web2C 7.3.1							   29 March 1999							  LATEX(1)
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