Check if a file has been included before?

Hello,
I want my scripts to be warning and error free. Is it possible to
check is a file has already been included as part of a "require",
"require_once" or "include" call in the script? I guess I could just
include everything and turn warnings/errors off, but I'd prefer not to
do that. Much thanks -

if you use requre or include _once() then they should never be included
again.

I do not know if there is a way to check, but years ago, in C i would write
a constant in the include file and check if it was defined in the include if
not, would include itself, then define.

--
Mike Bradley
http://www.gzentools.com -- free online php tools
"D. Alvarado" <laredotornado@zipmail.com> wrote in message
news:9fe1f2ad.0403061949.1d74ebb6@posting.google.c om...
> Hello,
> I want my scripts to be warning and error free. Is it possible to
> check is a file has already been included as part of a "require",
> "require_once" or "include" call in the script? I guess I could just
> include everything and turn warnings/errors off, but I'd prefer not to
> do that. Much thanks -
>

> if you use requre or include _once() then they should never be included
> again.
>
> I do not know if there is a way to check, but years ago, in C i would
write
> a constant in the include file and check if it was defined in the include
if
> not, would include itself, then define.
>

What about

if( !defined('INCLUDE_THEFILE'))
{
include( 'somefile.php' );
}else{
echo 'Already included'
}
....
....
// in somefile.php
defined('INCLUDE_THEFILE')

Might not be the best way...i didn't know that including a file more than
once could be a prob.

Sims

On 2004-03-07, D. Alvarado wrote:
> Hello,
> I want my scripts to be warning and error free. Is it possible to
> check is a file has already been included as part of a "require",
> "require_once" or "include" call in the script? I guess I could just
> include everything and turn warnings/errors off, but I'd prefer not to
> do that. Much thanks -
How about:
get_included_files () or get_required_files ()

They both return an array containing all included and required files.
They both do the same thing by the way (one is an alias of the other).
See:
http://www.php.net/get_included_files

--
Mike Peters
mike [-AT-] ice2o [-DOT-] com
http://www.ice2o.com

"Sims" <siminfrance@hotmail.com> wrote in message
news:c2f05b$1rr9hh$1@ID-162430.news.uni-berlin.de...
>
> > if you use requre or include _once() then they should never be included
> > again.
> >
> > I do not know if there is a way to check, but years ago, in C i would
> write
> > a constant in the include file and check if it was defined in the
include
> if
> > not, would include itself, then define.
> >
>
> What about
>
> if( !defined('INCLUDE_THEFILE'))
> {
> include( 'somefile.php' );
> }else{
> echo 'Already included'
> }
> ...
> ...
> // in somefile.php
> defined('INCLUDE_THEFILE')
>
> Might not be the best way...i didn't know that including a file more than
> once could be a prob.
>
> Sims


Yea thats it, then I started thinking, they should just use require/include
...._once(); then it hit me, instead of going through all the code, and
writing snippets to see if it was already include, just change all includes
to .._once().

OK, as I write this, I just got an idea, perhaps a small file that shows
something cool is included at several places, and they dont want to over do
it, so they need to check if it is included.


--
Mike Bradley
http://www.gzentools.com -- free online php tools

On 2004-03-07, CountScubula <me@scantek.hotmail.com> wrote:
> if you use requre or include _once() then they should never be included
> again.
>
> I do not know if there is a way to check, but years ago, in C i would write
> a constant in the include file and check if it was defined in the include if
> not, would include itself, then define.

I presume it was like

#ifndef FOO_H
#define FOO_H
....
#endif

--
http://home.mysth.be/~timvw