file_exists does not work

[Bob Sanderson]

This is my code:

if (file_exists($Fname)) {
echo "<td>$Fname exists</td>";
} else {
echo "<td>$Fname does not exist</td>";
}

$Fname is the full path to the file I'm trying to verify. When I run the
script, I get the following output:

http://server1:8080/images/dwg_images/5005/5005001_.pdf does not exist

If I cut-and-paste the output path, the file is displayed, confirming that
the file does exist.

Am I doing something wrong? Any help will be greatly appreciated.

[Rik]

On Mon, 13 Aug 2007 14:36:19 +0200, Bob Sanderson
<ne**@LUVSPAMbobsanderson.comwrote:

This is my code:

if (file_exists($Fname))

http://server1:8080/images/dwg_images/5005/5005001_.pdf does not
exist

From the manual:

File_exists:
<http://nl3.php.net/file_exists>:
"As of PHP 5.0.0 this function can also be used with some URL wrappers.
Refer to Appendix O, List of Supported Protocols/Wrappers for a listing of
which wrappers support stat() family of functionality."

HTTP wrapper:
<http://nl3.php.net/manual/en/wrappers.http.php>
Table O.2. Wrapper SummaryAttribute Supported
Restricted by allow_url_fopen Yes
Allows Reading Yes
Allows Writing No
Allows Appending No
Allows Simultaneous Reading and Writing N/A
Supports stat() No <---------------------------
Supports unlink() No
Supports rename() No
Supports mkdir() No
Supports rmdir() No

Ergo: file_exists does not play nice with http:// wrappers. If you want to
verify wether an URL exists, use fsockopen()(HEAD request), or CURL.
--
Rik Wasmus

[Bob Sanderson]

Rik <lu************@hotmail.comwrote in
news:op.twzz8gznqnv3q9@metallium:

On Mon, 13 Aug 2007 14:36:19 +0200, Bob Sanderson
<ne**@LUVSPAMbobsanderson.comwrote:

>This is my code:

if (file_exists($Fname))

> http://server1:8080/images/dwg_images/5005/5005001_.pdf does not
exist

From the manual:

File_exists:
<http://nl3.php.net/file_exists>:
"As of PHP 5.0.0 this function can also be used with some URL
wrappers. Refer to Appendix O, List of Supported Protocols/Wrappers
for a listing of which wrappers support stat() family of
functionality."

HTTP wrapper:
<http://nl3.php.net/manual/en/wrappers.http.php>
Table O.2. Wrapper SummaryAttribute Supported
Restricted by allow_url_fopen Yes
Allows Reading Yes
Allows Writing No
Allows Appending No
Allows Simultaneous Reading and Writing N/A
Supports stat() No <---------------------------
Supports unlink() No
Supports rename() No
Supports mkdir() No
Supports rmdir() No

Ergo: file_exists does not play nice with http:// wrappers. If you
want to verify wether an URL exists, use fsockopen()(HEAD request),
or CURL.

Thanks for the reply but I'm a beginner with PHP and frankly, don't
understand any of what you said. Is there another, simple way to
determine if a file exists?

[Krustov]

<comp.lang.php>
<Bob Sanderson>
<Mon, 13 Aug 2007 12:36:19 GMT>
<Xn**********************************@69.28.186.15 8>

This is my code:

if (file_exists($Fname)) {
echo "<td>$Fname exists</td>";
} else {
echo "<td>$Fname does not exist</td>";
}

$Fname is the full path to the file I'm trying to verify. When I run the
script, I get the following output:

http://server1:8080/images/dwg_images/5005/5005001_.pdf does not exist

If I cut-and-paste the output path, the file is displayed, confirming that
the file does exist.

As another user its best if you check the actual folder path rather than
a http url .

You can also write it like the below if you dont want to use else .
$pass=1;

$tempname="images/5005/5005001.pdf";

if (!file_exists($tempname)) {$pass=0;}

if ($pass==0) {print "<td>$tempname FILE NOT FOUND</td>";}

if ($pass==1) {print "<td>$tempname OK</td>";}

[Rik]

On Mon, 13 Aug 2007 15:34:27 +0200, Krustov <[e-mail]:

$pass=1;
if (!file_exists($tempname)) {$pass=0;}
if ($pass==0) //
if ($pass==1) //

Euhm,
if(file_exists()){
//something
} else {
//something else
}

Keep it legible for other coders, limit the amount of random variables
popping up in your script if you don't need them, and avoid
double/repeated comparisons...
--
Rik Wasmus

[Rik]

On Mon, 13 Aug 2007 14:59:07 +0200, Bob Sanderson
<ne**@LUVSPAMbobsanderson.comwrote:

Thanks for the reply but I'm a beginner with PHP and frankly, don't
understand any of what you said. Is there another, simple way to
determine if a file exists?

A 'file' is not the proper term for something accessed by the HTTP
protocol. As others have indicated, if the file is on the same server, you
should use the local filesystem instead of the long way around by http.

If it is on another server however, look at the user contributed notes at
<http://www.php.net/file_exists>, several options for determining wether
an URL can be 'found' are given there.
--
Rik Wasmus

[Krustov]

<comp.lang.php>
<Rik>
<Mon, 13 Aug 2007 15:38:56 +0200>
<op.twz2u6xyqnv3q9@metallium>

$pass=1;
if (!file_exists($tempname)) {$pass=0;}
if ($pass==0) //
if ($pass==1) //

Euhm,
if(file_exists()){
//something
} else {
//something else
}

Keep it legible for other coders, limit the amount of random variables
popping up in your script if you don't need them, and avoid
double/repeated comparisons...

Up your arse .

I dont recall asking you for your zen like wisdom on how i should or
shouldnt write code .

[Bob Sanderson]

Rik <lu************@hotmail.comwrote in news:op.twz2u6xyqnv3q9@metallium:

On Mon, 13 Aug 2007 15:34:27 +0200, Krustov <[e-mail]:

>$pass=1;
if (!file_exists($tempname)) {$pass=0;}
if ($pass==0) //
if ($pass==1) //

Euhm,
if(file_exists()){
//something
} else {
//something else
}

That did it. Thanks to all.

[Krustov]

<comp.lang.php>
<Rik>
<Mon, 13 Aug 2007 16:36:30 +0200>
<op.twz5i4ikqnv3q9@metallium>

Common mistake: there are very little rules, but as it is internet

No - its actually called usenet - and is merely a part of the internet .

Usenet doesnt have any heirarcial command structure and everybody is
equal with everybody having the same rights .

That is apart from people like yourself who self appoint themselves as
some sort of newsgroup arsehole who trys to dictate and decide what
other users can and cant say on 'their' newsgroup .

[Krustov]

<comp.lang.php>
<Jerry Stuckle>
<Mon, 13 Aug 2007 10:58:22 -0400>
<8I******************************@comcast.com>

Rik is correct. When you post sample code, you should try to ensure it
is a good example

Who decides what is good or bad on this newsgroup - you and rik ? .

[Rik]

On Mon, 13 Aug 2007 17:02:17 +0200, Krustov <[e-mail]:

<comp.lang.php>
<Rik>
<Mon, 13 Aug 2007 16:36:30 +0200>
<op.twz5i4ikqnv3q9@metallium>

>Common mistake: there are very little rules, but as it is internet

No - its actually called usenet - and is merely a part of the internet .

And as usenet is part of internet, see my 'common sense' statement.

Usenet doesnt have any heirarcial command structure and everybody is
equal with everybody having the same rights .

'hierarchical', and people are encouraged to play nice. No rules does not
mean no self-censorship, and it doesn't mean nothing can be criticized. If
you can post code, which you can and may, I'm free to give my thoughts on
them. I might be a bit short and to the point, without much regard for
peoples feelings for their precious code, but none of my posts here are
aimed directly at a person, they're all about the code. Especially in a
topic opened by a starting PHP-user, good coding practices are something I
consider important. Future colleagues will be very happy with it.

That is apart from people like yourself who self appoint themselves as
some sort of newsgroup arsehole who trys to dictate and decide what
other users can and cant say on 'their' newsgroup .

I criticized your code, perfectly suitable in a PHP newsgroup. Don't post
code if you're not prepared for citicism. I did _not_ challenge your right
to post the code, I challenged to code itself, see the difference? If you
don't agree, tell me why, on a coding level, your way should be preferred.
I'm still open to a real conversation about that, I don't dictate
anything, but I would appreciate it if a difference in opinion over code
could be discussed without it getting personal.

Then again, I have no illusions about this thread being about PHP anymore,
f'upped to alt.flame
--
Rik Wasmus

[Krustov]

<comp.lang.php>
<Rik>
<Mon, 13 Aug 2007 17:19:04 +0200>
<op.twz7h2h8qnv3q9@metallium>

I criticized your code, perfectly suitable in a PHP newsgroup. Don't post
code if you're not prepared for citicism

Is that in the newsgroup charter - or did you judge and jury that
particular rule yourself for your own use .

Understandable i suppose if you concider yourself to be a god .

[Krustov]

<comp.lang.php>
<Rik>
<Mon, 13 Aug 2007 17:37:20 +0200>
<op.twz8citqqnv3q9@metallium>

You have not given any reason why your construct would be better

Wasnt aware i was obliged to explain myself to you for the heinous crime
of posting a couple of lines of code .

[Jerry Stuckle]

Krustov wrote:

<comp.lang.php>
<Jerry Stuckle>
<Mon, 13 Aug 2007 10:58:22 -0400>
<8I******************************@comcast.com>

>Rik is correct. When you post sample code, you should try to ensure it
is a good example

Who decides what is good or bad on this newsgroup - you and rik ? .

And a lot of other experienced programmers, yes.

You post poor code, be prepared to have it criticized.

And I agree with Rik - tell us WHY your code is better. It uses an
unnecessary extra variable, multiple tests where one would do, and
unnecessarily complicates the code.

Why is it better?

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[Krustov]

<comp.lang.php>
<Jerry Stuckle>
<Mon, 13 Aug 2007 12:27:16 -0400>
<35******************************@comcast.com>

It uses an unnecessary extra variable

Your right of course - i will commit hari kari immediately .

[gosha bine]

On 13.08.2007 17:03 Krustov wrote:

<comp.lang.php>
<Jerry Stuckle>
<Mon, 13 Aug 2007 10:58:22 -0400>
<8I******************************@comcast.com>

>Rik is correct. When you post sample code, you should try to ensure it
is a good example

Who decides what is good or bad on this newsgroup - you and rik ? .

yes ;)

--
gosha bine

makrell ~ http://www.tagarga.com/blok/makrell
php done right ;) http://code.google.com/p/pihipi

[Krustov]

<comp.lang.php>
<gosha bine>
<Mon, 13 Aug 2007 18:37:10 +0200>
<46***********************@read.cnntp.org>

makrell ~ http://www.tagarga.com/blok/makrell

Have you concidered using something like the following as all it needs
is class="makrell_background" put in the <bodytag .

..makrell_background
{
background-color: #FFFFFF;
background-image: url(images/header_fade.jpg);
background-repeat: repeat-x;
background-position: top;
}

You can see the effect on www.outerlimitsfan.co.uk and obviously you can
do a right click to get the image .

I like your clean web design and IMHO the above would enhance it
slightly by taking away 100% white look to it .

[gosha bine]

On 13.08.2007 18:55 Krustov wrote:

<comp.lang.php>
<gosha bine>
<Mon, 13 Aug 2007 18:37:10 +0200>
<46***********************@read.cnntp.org>

>makrell ~ http://www.tagarga.com/blok/makrell

Have you concidered using something like the following as all it needs
is class="makrell_background" put in the <bodytag .

.makrell_background
{
background-color: #FFFFFF;
background-image: url(images/header_fade.jpg);
background-repeat: repeat-x;
background-position: top;
}

You can see the effect on www.outerlimitsfan.co.uk and obviously you can
do a right click to get the image .

I like your clean web design and IMHO the above would enhance it
slightly by taking away 100% white look to it .

Thanks for the suggestion ;) I'll think about it.
--
gosha bine

makrell ~ http://www.tagarga.com/blok/makrell
php done right ;) http://code.google.com/p/pihipi

[Toby A Inkster]

Krustov wrote:

i will commit hari kari immediately .

http://www.realultimatepower.net/ninja/seppuku.htm

--
Toby A Inkster BSc (Hons) ARCS
[Geek of HTML/SQL/Perl/PHP/Python/Apache/Linux]
[OS: Linux 2.6.12-12mdksmp, up 54 days, 11:47.]

Fake Steve is Dead; Long Live Fake Bob!
http://tobyinkster.co.uk/blog/2007/08/13/fake-bob/

[lists73]

We do have a nice movie linked on our side explaining the file
handling in php - maybe this helps :)

http://www.skilltube.com/index.php?o...d=44&Itemid=52
On 13 Aug., 16:17, Bob Sanderson <[e-mail]:

Rik <[e-mail] innews:op.twz2u6xyqnv3q9@metallium:

On Mon, 13 Aug 2007 15:34:27 +0200, Krustov <[e-mail]:

$pass=1;
if (!file_exists($tempname)) {$pass=0;}
if ($pass==0) //
if ($pass==1) //

Euhm,
if(file_exists()){
//something
} else {
//something else
}

That did it. Thanks to all.

[lists73]

We do have a nice movie linked on our side explaining the file
handling in php - maybe this helps :)

http://www.skilltube.com/index.php?o...d=44&Itemid=52
On 13 Aug., 16:17, Bob Sanderson <[e-mail]:

Rik <[e-mail] innews:op.twz2u6xyqnv3q9@metallium:

On Mon, 13 Aug 2007 15:34:27 +0200, Krustov <[e-mail]:

$pass=1;
if (!file_exists($tempname)) {$pass=0;}
if ($pass==0) //
if ($pass==1) //

Euhm,
if(file_exists()){
//something
} else {
//something else
}

That did it. Thanks to all.