How do you get a filename from a handle/resource?

[Adam Nielsen]

Hi all,

Does anyone know how you can get a filename if all you've got is the
resource (e.g. returned by fopen())?

The reason I ask is that I'd like to use tmpfile() to create a temporary
file (because then it will be automatically deleted should my script
abruptly terminate.) Once I've written my data to this file, I then
need to pass the filename on to an external command, but I can't see any
way to find out what the temporary file is called.

I've tried using fstat(), but this returns everything except the filename.

Any ideas?

Thanks,
Adam.

[Janwillem Borleffs]

Re: How do you get a filename from a handle/resource?

Adam Nielsen schreef:

Does anyone know how you can get a filename if all you've got is the
resource (e.g. returned by fopen())?
>

You can't, unless you write a wrapper which stores the file name.

The reason I ask is that I'd like to use tmpfile() to create a temporary
file (because then it will be automatically deleted should my script
abruptly terminate.)
>

It depends on what you mean by "abruptly terminate". When your script
crashes or manually interrupted, the temporary file won't be deleted.


JW

[=?ISO-8859-1?Q?=22=C1lvaro_G=2E_Vicario=22?=]

Re: How do you get a filename from a handle/resource?

Adam Nielsen escribió:

Does anyone know how you can get a filename if all you've got is the
resource (e.g. returned by fopen())?
>
The reason I ask is that I'd like to use tmpfile() to create a temporary
file (because then it will be automatically deleted should my script
abruptly terminate.) Once I've written my data to this file, I then
need to pass the filename on to an external command, but I can't see any
way to find out what the temporary file is called.
>
I've tried using fstat(), but this returns everything except the filename.

Use tempnam() instead:

http://es2.php.net/manual/en/function.tempnam.php

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[Jerry Stuckle]

Re: How do you get a filename from a handle/resource?

Adam Nielsen wrote:

Hi all,
>
Does anyone know how you can get a filename if all you've got is the
resource (e.g. returned by fopen())?
>
The reason I ask is that I'd like to use tmpfile() to create a temporary
file (because then it will be automatically deleted should my script
abruptly terminate.) Once I've written my data to this file, I then
need to pass the filename on to an external command, but I can't see any
way to find out what the temporary file is called.
>
I've tried using fstat(), but this returns everything except the filename.
>
Any ideas?
>
Thanks,
Adam.
>

You can't. But then the file will be deleted when you fclose() it - and
you should close a file you have open for writing before passing it off
to another program, anyway.

Rather, use tempname() to get a unique name, then open it.

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