Re: [PHP] Directory Structure

[Frank Arensmeier]

I think that these kind of questions are very annoying - it is almost  
rude to post this to a list.


Why don't you

a) show that you have done some thinking
b) have at least scanned the manual
c) have asked Google.

/frank

8 sep 2006 kl. 07.12 skrev Manoj Singh:


Hello all,

I am developing a site in which i have to show the directory  
structure of
any server i.e the admin will enter any site name and i have to  
show the dir

structure of that site name.

Please help me to fix this.

Thanks & Regards
Manoj


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[PHP] readdir filenames with accents issue

[All U Want]

Hi,

I'm creating a file browsing site but don't know how to list properly  
filenames containing accents  (french, spanish, etc). I've been  
browsing the archives but couldn't find a fix.


foreach ($files as $file) {
echo $file;
}

For example:
Filename: sábado-1.mov
Link: sábado-1.mov

I would appreciate any help.

Regards,
Luis.

PS - If it helps I'm working on OS X and PHP 4.4.1

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[PHP] Re: IE session problem on one server only

[Alex Turner]

Larry Garfield wrote:
Another issue. :-)  I've another site I've built that uses PHP sessions for 
user authentication.  When the user logs in with a user/pass, that is matched 
against a record in the database and, if found, that user object is stored in 
the session along with various other tracking data like the IP address, and 
the session key is stored in the user table.  Then when viewing a page, the 
systems compares the session key against the user table and the IP address of 
the request against the saved IP address.  If anything doesn't match up 
properly, the user is kicked out.


OK, all fine and dandy.  It works correctly in both IE and Firefox on our test 
server.  On the live site, however, it works only in Firefox.  In IE, it 
accepts the initial login and displays the first page, but then the next time 
the user clicks a link they are asked to login again, as if the session is 
not being sent or saved properly.  Both servers are running Linux and PHP 
4.3.x.


We had issues before with the session not working correctly in IE, but I fixed 
those with info from the php.net manual user comments.  I'm at a loss as to 
why it's only happening on the one server and not the other now.  If it were 
the other way around I wouldn't care, but the live site shouldn't break. :-)


Any idea what could be the problem?

It sounds like the IE is putting different security/cookie settings for 
your local and remote site.


AJ

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[PHP] How do I call an class?

[Sr. Paulo Ricardo]

Good morning.

 

 

How do I call an class?

 

 

It’s correct?

 

$Class  = new Class();

 

or

 

$class = new Class();

 

 

Att,

'É um orgulho ter você como nosso cliente'

 
Paulo Ricardo 
Programador (Desenvolvedor)
 
ArgoHost.net
Hospedagem Web com Facilidade
  http://www.argohost.net
Suporte Telefônico: (85) 3264-9944 / (11) 4063-4844
E-mail:   [EMAIL PROTECTED]

 

Re: [PHP] How do I call an class?

[Rafael Mora]

Hi!

I think u are confused, the variable name doesnt have anything to do with
the Class name...


So you can have something like this:

$myvar = new shuttle();
$jjj = new ISS();

u just need to be sure that u are using the exact name of the class, it
doesnt matter the variable name,

hope u get clear!

bye, from Venezuela
Rafa


On 9/8/06, Sr. Paulo Ricardo <[EMAIL PROTECTED]> wrote:


Good morning.





How do I call an class?





It's correct?



$Class  = new Class();



or



$class = new Class();





Att,

'É um orgulho ter você como nosso cliente'


Paulo Ricardo
Programador (Desenvolvedor)

ArgoHost.net
Hospedagem Web com Facilidade
 http://www.argohost.net
Suporte Telefônico: (85) 3264-9944 / (11) 4063-4844
E-mail:   [EMAIL PROTECTED]

[PHP] PHP5 Session length changed

[Jens Kisters]

Hi,

we validate all incoming parameters and that includes checking if the
phpsession ID is only numbers and letters and is 32 Bytes long.
This worked for some PHP5 Servers but we just encountered an 5.1.2 that
issued sessionIDs that were 26 Bytes long.
I cant find any note about that in either of the PHP5 changelogs.

Question : What lengths are valid for PHP Sesssions is it possible to
encounter valid sessions with a length other than 26 and 32?

PHPinfo :

http://neu.karnevalservice.de/dbcTrade/phpinfo.php

thanks
Jens

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Re: [PHP] How do I call an class?

[Satyam]

I find that politeness is always good, nevertheless using 'o senhor' to 
refer to Class1 is a little too much.


Now, I am not sure what your question actually is.  Are you wondering about 
naming conventions? Your example seems to indicate so.


The most frequent is to have class names with the first letter in uppercase 
while variables are all lowercase with words separated by underscores or 
what is called camelcase, the first word all lowercase and then you use 
uppercase for the first letter of each word with no undescores.  An object, 
that is, the instance of a class, is a variable, thus it follows the 
conventions for variables.  Thus:


$my_class = new Class(); using traditional PHP conventions or
$myClass = new Class(); using camel case.

If that was not your question and you find it hard to state it in English, 
feel free to contact me privately, though I can answer you only in Spanish, 
my Portuguese being too primitive.


Satyam

- Original Message - 
From: "Sr. Paulo Ricardo" <[EMAIL PROTECTED]>

To: 
Sent: Friday, September 08, 2006 3:14 PM
Subject: [PHP] How do I call an class?


Good morning.

How do I call an class?

It's correct?

$Class  = new Class();

or

$class = new Class();


Att,

'É um orgulho ter você como nosso cliente'


Paulo Ricardo
Programador (Desenvolvedor)

ArgoHost.net
Hospedagem Web com Facilidade
 http://www.argohost.net
Suporte Telefônico: (85) 3264-9944 / (11) 4063-4844
E-mail:   [EMAIL PROTECTED]

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Re: [PHP] Strange server crash problem

[Larry Garfield]

On Friday 08 September 2006 01:22, Robert Cummings wrote:

> > > Binary search using error_log() and __LINE__ output to track down where
> > > the thing dies.
> >
> > Binary search?  I must be using a different definition than you are,
> > since I don't know what a binary search would do for me when trying to
> > track down a problem with output. :-)
>
> Binary search to track down a problem with output means you place log
> info at three points in the code, 2 that you are certain lie outside the
> error condition, and the 3rd to cut the problem space in two. Then
> depending on what gets output you know in which half of the problem
> space the error exists. Then you take again divide the problem space
> until you find the exact location of the bug.
>
> > I suppose it is possible that it's dying at some point other than where
> > the output is stopping.  I've localized where the output stops; it's
> > always at the end of a given loop iteration in the code that generates
> > the sidebar; at the end of the loop that passes the 4 KB mark, it seems.
>
> I didn't realize you had already tracked down the location. Have you
> tried displaying errors? If you're worried about a production site you
> could install a custom error handler that displays the error based on
> the REMOTE_ADDR value. That won't help you though if a segfault is
> occurring. Are the PHP versions the same between machines?

What I did was along the lines of:

print "http://www.php.net/)
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[PHP] Execution time

[André Medeiros]

Hello everyone.

This may seem as a silly question, but I went through the
documentation and it wasn't explicit on this issue, at least for me.

Let's say that I'm on an 128kb/s upload. I need to upload an 100mb
file through a POST. PHP has, by default, 90 seconds execution limit
time.

So, the question is, when I hit the submit button, does it start
timing? Or does it start timing when the PHP gets the FULL POST
headers?

Thanks in advance,
André

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RE: [PHP] PHP5 Session length changed

[Ford, Mike]

> -Original Message-
> From: Jens Kisters [mailto:[EMAIL PROTECTED]
> Sent: 08 September 2006 14:53
> 
> we validate all incoming parameters and that includes checking if the
> phpsession ID is only numbers and letters and is 32 Bytes long.
> This worked for some PHP5 Servers but we just encountered an 
> 5.1.2 that
> issued sessionIDs that were 26 Bytes long.
> I cant find any note about that in either of the PHP5 changelogs.
> 
> Question : What lengths are valid for PHP Sesssions is it possible to
> encounter valid sessions with a length other than 26 and 32?

Yes.

Originally, session IDs were MD5 hashes 128 bits long, encoded 
4-bits-per-character to give a 32-character session id.

PHP 5 introduced the settings session.hash_function and 
session.hash_bits_per_character; with these, you can have an MD5 (128 bits) or 
SHA-1 (160 bits) hash, encoded 4, 5 or 6 bits per character. There are 6 
possible combinations of these settings, giving 5 possible session id lengths 
of 40, 32, 27, 26 and 22 characters. 

Cheers!

Mike

-
Mike Ford,  Electronic Information Services Adviser,
Learning Support Services, Learning & Information Services,
JG125, James Graham Building, Leeds Metropolitan University,
Headingley Campus, LEEDS,  LS6 3QS,  United Kingdom
Email: [EMAIL PROTECTED]
Tel: +44 113 283 2600 extn 4730  Fax:  +44 113 283 3211 


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[PHP] Testing PHP sites with JMeter

[Alex Turner]

All,

Sorry if this is a little off topic.  I have been writing tutorials on 
load and regression testing web applications with JMeter.  I have just 
posted the first.  These are being do to help people in TPN, but I am 
able to make them public.


As the testing is all being done on PHP based web apps, I thought it 
might be of interest.


Cheers

AJ

The first is here, there will be more as time goes on:

http://nerds-central.blogspot.com/2006/08/pushing-envelope-with-jmeter.html

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[PHP] addFormat with Spreadsheet Excel Writer

[Jef Sullivan]

Greetings all,

 

Thanks for the help with the Spreadsheet Excel Writer yesterday.

I was wondering if anyone knew of problems with the addFormat() 

within the writer and PHP 5.0. I have followed the examples for

setting up a specific format but it is not being recognized.

 

Here is what I have tried...

 

$format_bold =& $workbook->addFormat();

$format_bold->SetBold();

 

And

 

$title_format =& $workbook->addFormat(array('fontfamily' => 'Arial',

 
'size' => 13,

 
'color' => 'black',

 
'bgcolor' => '#C0C0C0',

 
'bold' => 1)

   );

 

Neither have worked. The error I get is pointing to the
Writer/Worksheet.php 

file, line 1242 indicating that it cannot be converted. Yet, this same
code

was used in another application that is running PHP 4.2

 

 

 

 

Jef Sullivan

Programmer

Progrexion

work   (801) 828-1745

moble (801) 682-9727

[EMAIL PROTECTED]

 

 

Research | Marketing | Sales Generation

 

This email and its contents are confidential. If you are not the 

intended recipient, delete this email and, do not use or 

disclose the information contained within or its attachments.

Thank you.

 

[PHP] Re: Execution time

[M. Sokolewicz]

André Medeiros wrote:

Hello everyone.

This may seem as a silly question, but I went through the
documentation and it wasn't explicit on this issue, at least for me.

Let's say that I'm on an 128kb/s upload. I need to upload an 100mb
file through a POST. PHP has, by default, 90 seconds execution limit
time.

So, the question is, when I hit the submit button, does it start
timing? Or does it start timing when the PHP gets the FULL POST
headers?

Thanks in advance,
André



It doesn't start timing until the request has been fully recieved and 
control handed over to PHP. So, until your file has been fully uploaded, 
PHP won't even have started to do anything, and as such the execution 
times hasn't started ticking either.


- tul

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[PHP] Re: How to add user to linux using php

[Michelle Konzack]

Am 2006-09-05 08:36:21, schrieb Jon Anderson:

> Or create a simple shell/perl/php/whatever wrapper for adduser, and 
> allow sudo for that wrapper by the web server user only.
> 
> For example, you could create a wrapper that only allows one 
> alphanumeric argument for the username, and another for the password. 

That would not be POSIX compliant...

A USERNAME must be:

^[A-Za-z_][-_.A-Za-z0-9]*

So the allowed chars should at least:

-_.A-Za-z0-9

But his can be easily checked in PHP.
And ONLY after this passed to your wraper script.

Note:   I do this too on a public server and I asume, you know
I have hackattemts, even if you can not know it.

Greetings
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant


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Re: [PHP] Quotes?

[Michelle Konzack]

Am 2006-09-05 23:12:43, schrieb Gustav Wiberg:
> I want to save this to a string...
> 
> 

Re: [PHP] Re: How to add user to linux using php

[Jon Anderson]

Michelle Konzack wrote:

Am 2006-09-05 08:36:21, schrieb Jon Anderson:

  
Or create a simple shell/perl/php/whatever wrapper for adduser, and 
allow sudo for that wrapper by the web server user only.


For example, you could create a wrapper that only allows one 
alphanumeric argument for the username, and another for the password. 



That would not be POSIX compliant...

A USERNAME must be:

^[A-Za-z_][-_.A-Za-z0-9]*

So the allowed chars should at least:

-_.A-Za-z0-9
  
IMO, what characters you allow in usernames on your systems is unrelated 
to POSIX. It's a policy decision. POSIX merely defines what compliant 
operating systems (and components) must support.


I only allow usernames with 5-8 alphabetic characters on systems that I 
manage - as a human, I'm not POSIX compliant? ;-)

But his can be easily checked in PHP.
And ONLY after this passed to your wraper script.
  
They can also be easily checked from your wrapper with sed, wc, grep, 
etc. - if your web server is compromised, you don't want to allow the 
person to execute a script that doesn't properly check it's input 
parameters. (That's my paranoia talking. :-)


jon

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Re: [PHP] PHP Access Violations

[Wolf]

MySQL Query Tool
MySQL Admin Tool

Both free, both work flawlessly w/ MySQL  and both maintained by MySQL

Wolf

Christopher Watson wrote:
> Following up on this now...
> 
> I have successfully installed Apache 2.0.59 (Win32), and configured
> successfully for PHP 5.1.6 and MySQL 5.0.24.  The app is running fine,
> but I ran a few manipulation queries from the SQLyog interface and
> Apache did crash.  I'll have try to reproduce the problem again in
> order to get the exception data.  This is looking more and more like a
> SQLyog problem.  Maybe I should try another MySQL admin client.
> 
> -Christopher
> 
> On 9/6/06, Christopher Watson <[EMAIL PROTECTED]> wrote:
>> Spoke too soon.  After a reboot, I had only IE and Homesite open,
>> making changes to PHP code and running the app, and it hit an access
>> violation.  So SQLyog ain't it.
>>
>> -Chris
>>
>> On 9/6/06, Christopher Watson <[EMAIL PROTECTED]> wrote:
>> > Thanks for the input, Jon.  I'll get to the Apache and IIS restart
>> > suggestions soon.
>> >
>> > Meanwhile, I think I have a semi-repeatable recipe for getting the
>> > access violation to happen.  As far as I can tell, everything is cool
>> > until I open up SQLyog and do some sort of database manipulation
>> > within it.  Almost immediately after that, switching back to the
>> > browser and flying through the app a little more brings on the
>> > violation.  So far, my testing is indicating to me that the violation
>> > does not occur without SQLyog having done some work in the database.
>> >
>> > -Chris
>>
> 

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Re: [PHP] Strange server crash problem

[Robert Cummings]

On Fri, 2006-09-08 at 09:19 -0500, Larry Garfield wrote:
>
> Our development server is an IIS/PHP 4.3 environment.  The live server is a 
> 4.0.6 box sitting behind a proxy server as well, which could be part of the 
> problem.  The whole thing is a mess, I agree. :-)

There are still boxes with PHP versions that low? Ugh :/ And it does
help you're using IIS *hahah* ;) Anyways, one thing that used to get me
occasionally that far back was trim( $var ) where $var was null. I was
always able to fix those by doing trim( ''.$var ). Anyways, just a
thought.

Cheers,
Rob.
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| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting  |
| a powerful, scalable system for accessing system services  |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for   |
| creating re-usable components quickly and easily.  |
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Re: [PHP] Segfault problem [long]

[Daniel A. Ramaley]

On Thursday 07 September 2006 16:46, you wrote:
>You seem to be at least somewhat familiar with gdb, so this may not be
>news to you, but the segfault looks to be in PHP's pcre extension. PHP
>version 4.4.3 has an updated version of PCRE. That might be worth a
> shot.

My thanks to those of you who responded. I'll try compiling the latest 
4.4.x and see if that fixes anything. If not, then i'll follow Chris' 
suggestion to ask about it on the internals list.


Dan RamaleyDial Center 118, Drake University
Network Programmer/Analyst 2407 Carpenter Ave
+1 515 271-4540Des Moines IA 50311 USA

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[PHP] Variable of current function call?

[Brent Meshier]

While I'm inside a function call, is it possible to know what function
is currently being called?
 
Brent
 

Re: [PHP] Variable of current function call?

[Robert Cummings]

On Fri, 2006-09-08 at 14:54 -0400, Brent Meshier wrote:
> While I'm inside a function call, is it possible to know what function
> is currently being called?

RTFM: http://www.php.net/manual/en/language.constants.predefined.php

Cheers,
Rob.
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::
| An application and templating framework for PHP. Boasting  |
| a powerful, scalable system for accessing system services  |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for   |
| creating re-usable components quickly and easily.  |
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RE: [PHP] Variable of current function call?

[KermodeBear]

> While I'm inside a function call, is it possible to know what 
> function is currently being called?

Yes.

http://us2.php.net/debug_backtrace

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Re: [PHP] Strange server crash problem

[Andrew Kreps]

One thing that jumped to mind from my PHP 4 days -- do you have output_gzip
(or similar) enabled in your PHP.ini?  I seem to remember having a similar
problem a while back, and disabling the gzipped output fixed it for me.
Also, is it possible to browse the website from the web server itself?  That
could eliminate the proxy server as a potential issue.

On 9/8/06, Larry Garfield <[EMAIL PROTECTED]> wrote:


On Friday 08 September 2006 01:22, Robert Cummings wrote:

Our development server is an IIS/PHP 4.3 environment.  The live server is
a
4.0.6 box sitting behind a proxy server as well, which could be part of
the
problem.  The whole thing is a mess, I agree. :-)

[PHP] Proxy and header redirection

[Ashley M. Kirchner]

   In Apache I can configure a proxy redirect from one URL to another, ej:

   htp://www.somesite.com/test -> http://www.othersite.com/path/to/display/

   So that when the user loads up http://www.somesite.com/test they 
actually see the content of the redirect instead (without the URL 
getting rewritten.)  However, if that redirected URL happens to be a PHP 
script with a header() statement in it, things go wrong, ej:


   http://www.somesite.com/test -> 
http://www.othersite.com/locate.php?page=test


   Assume that locate.php does a header() redirect to 
/path/to/display/, suddenly the proxy redirect doesn't work, instead the 
user will see the URL they typed in changed into:


   http://www.somesite.com/test -> 
http://www.somesite.com/path/to/display/ which will cause 404's.


   Does this make any sense, and can someone figure out how to fix this?

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[PHP] if statement with or comparison (newbie)

[JD]

I'm trying to set up a simple conditional, something like this:

If my_variable is NOT equal to (black or white)
   echo "wrong color"
else
   echo "right color"

Here is what I have tried:

if ($_REQUEST['id'] != ("black" or "white")) {

echo "wrong color";

} else (

echo "right color";

)

However, no matter what I enter, I always get response "right color".

I should add that if I change the if statement to:

if ($_REQUEST['id'] != ("black"))

then I get "right color" when I enter "black" and "wrong color" for 
everything else.


Would you please point out what's the trivial thing I'm missing here...

jd

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Re: [PHP] if statement with or comparison (newbie)

[Prathaban Mookiah]

Let me rephrase it. Your color should be black or white to be the right 
colour. Is this correct?

In that case you should change it to

 if ($_REQUEST['id'] != "black" AND $_REQUEST['id'] != "white") {

 echo "wrong color";

 } else (

 echo "right color";

 }

- Original Message - 
From: "JD" <[EMAIL PROTECTED]>
To: 
Sent: Friday, September 08, 2006 5:03 PM
Subject: [PHP] if statement with or comparison (newbie)


> I'm trying to set up a simple conditional, something like this:
>
> If my_variable is NOT equal to (black or white)
>echo "wrong color"
> else
>echo "right color"
>
> Here is what I have tried:
>
> if ($_REQUEST['id'] != ("black" or "white")) {
>
> echo "wrong color";
>
> } else (
>
> echo "right color";
>
> )
>
> However, no matter what I enter, I always get response "right color".
>
> I should add that if I change the if statement to:
>
> if ($_REQUEST['id'] != ("black"))
>
> then I get "right color" when I enter "black" and "wrong color" for 
> everything else.
>
> Would you please point out what's the trivial thing I'm missing here...
>
> jd
>
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> To unsubscribe, visit: http://www.php.net/unsub.php
>
> 

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Re: [PHP] if statement with or comparison (newbie)

[Kevin Murphy]

Shouldn't that be this instead:


 if (($_REQUEST['id'] != "black") OR ($_REQUEST['id'] !=  
"white")) {


 echo "wrong color";

 } else {

 echo "right color";

 }


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Webmaster: Information and Marketing Services
Western Nevada Community College
www.wncc.edu
775-445-3326


On Sep 8, 2006, at 2:28 PM, Prathaban Mookiah wrote:

Let me rephrase it. Your color should be black or white to be the  
right

colour. Is this correct?

In that case you should change it to

 if ($_REQUEST['id'] != "black" AND $_REQUEST['id'] != "white") {

 echo "wrong color";

 } else (

 echo "right color";

 }

- Original Message -
From: "JD" <[EMAIL PROTECTED]>
To: 
Sent: Friday, September 08, 2006 5:03 PM
Subject: [PHP] if statement with or comparison (newbie)



I'm trying to set up a simple conditional, something like this:

If my_variable is NOT equal to (black or white)
   echo "wrong color"
else
   echo "right color"

Here is what I have tried:

if ($_REQUEST['id'] != ("black" or "white")) {

echo "wrong color";

} else (

echo "right color";

)

However, no matter what I enter, I always get response "right color".

I should add that if I change the if statement to:

if ($_REQUEST['id'] != ("black"))

then I get "right color" when I enter "black" and "wrong color" for
everything else.

Would you please point out what's the trivial thing I'm missing  
here...


jd

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Re: [PHP] if statement with or comparison (newbie)

[Mitch Miller]

I think the OR should be an AND ...

If $_REQUEST['id'] = "black" then the second test will be true and it 
will output "wrong color."  If the color is "white" then the same thing 
will happen 'cause it meets the first criteria.


-- Mitch


Kevin Murphy wrote:

Shouldn't that be this instead:


 if (($_REQUEST['id'] != "black") OR ($_REQUEST['id'] !=  "white")) {

 echo "wrong color";

 } else {

 echo "right color";

 }




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RE: [PHP] if statement with or comparison (newbie)

[Jeremy Privett]

Well, it could be this, too:

switch( $_REQUEST['id'] ) {
case "white":
echo "Right color.";
break;

case "black":
echo "Right color.";
break;

default:
echo "Wrong color.";
break;
}

---
Jeremy C. Privett
Director of Product Development
Zend Certified Engineer
Completely Unique
[EMAIL PROTECTED]
 
Phone: 303.459.4819
Fax: 303.459.4821
Web:www.completelyunique.com
 
This email may contain confidential and privileged material for the sole use
of the intended recipient. Any review or distribution by others is strictly
prohibited. If you are not the intended recipient please contact the sender
and delete all copies. Your compliance is appreciated.

-Original Message-
From: Kevin Murphy [mailto:[EMAIL PROTECTED] 
Sent: Friday, September 08, 2006 3:26 PM
To: php
Cc: JD
Subject: Re: [PHP] if statement with or comparison (newbie)

Shouldn't that be this instead:


  if (($_REQUEST['id'] != "black") OR ($_REQUEST['id'] !=  
"white")) {

  echo "wrong color";

  } else {

  echo "right color";

  }


-- 
Kevin Murphy
Webmaster: Information and Marketing Services
Western Nevada Community College
www.wncc.edu
775-445-3326


On Sep 8, 2006, at 2:28 PM, Prathaban Mookiah wrote:

> Let me rephrase it. Your color should be black or white to be the  
> right
> colour. Is this correct?
>
> In that case you should change it to
>
>  if ($_REQUEST['id'] != "black" AND $_REQUEST['id'] != "white") {
>
>  echo "wrong color";
>
>  } else (
>
>  echo "right color";
>
>  }
>
> - Original Message -
> From: "JD" <[EMAIL PROTECTED]>
> To: 
> Sent: Friday, September 08, 2006 5:03 PM
> Subject: [PHP] if statement with or comparison (newbie)
>
>
>> I'm trying to set up a simple conditional, something like this:
>>
>> If my_variable is NOT equal to (black or white)
>>echo "wrong color"
>> else
>>echo "right color"
>>
>> Here is what I have tried:
>>
>> if ($_REQUEST['id'] != ("black" or "white")) {
>>
>> echo "wrong color";
>>
>> } else (
>>
>> echo "right color";
>>
>> )
>>
>> However, no matter what I enter, I always get response "right color".
>>
>> I should add that if I change the if statement to:
>>
>> if ($_REQUEST['id'] != ("black"))
>>
>> then I get "right color" when I enter "black" and "wrong color" for
>> everything else.
>>
>> Would you please point out what's the trivial thing I'm missing  
>> here...
>>
>> jd
>>
>> -- 
>> PHP General Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>>
>
> -- 
> PHP General Mailing List (http://www.php.net/)
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>

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Re: [PHP] if statement with or comparison (newbie)

[Satyam]

- Original Message - 
From: "JD" <[EMAIL PROTECTED]>

To: 
Sent: Friday, September 08, 2006 11:03 PM
Subject: [PHP] if statement with or comparison (newbie)



I'm trying to set up a simple conditional, something like this:

If my_variable is NOT equal to (black or white)
   echo "wrong color"
else
   echo "right color"

Here is what I have tried:

if ($_REQUEST['id'] != ("black" or "white")) {



What PHP (and any parser, for that matter) will try to do is first solve the 
innermost parenthesis.  ("black" or "white").  Many typed languages would 
give an error at this point, but PHP tries to convert anything it gets to 
whatever is more useful at the moment.  Since both "black" and "white" are 
not null or empty strings, they are evaluated as true for the logical 
comparison and true or true is always true.  Now, $_REQUEST['id'] might be 
whatever it is, but dealing with booleans as we are this far, anything but 
missing or empty string will be true as well, which will give you the second 
option.



Now, first of all, avoid negative comparissons, negative booleans are 
horrible.  Try first to straighten them up or you might get thoroughly 
confussed:



if ($_REQUEST['id] == 'black' or $_REQUEST['id'] == 'white') {
   echo 'right color';
} else {
echo 'wrong color'';
}

And so as you know why it is good to straighten negative booleans, this 
would be the twisted way


if ($_REQUEST['id] != 'black' and $_REQUEST['id'] != 'white') {
echo 'wrong color'';
} else {
   echo 'right color';
}

Notice that not only the comparisson changed but now they are joined by an 
AND instead of an OR and the then and else parts are swapped.


Satyam



echo "wrong color";

} else (

echo "right color";

)

However, no matter what I enter, I always get response "right color".

I should add that if I change the if statement to:

if ($_REQUEST['id'] != ("black"))

then I get "right color" when I enter "black" and "wrong color" for 
everything else.


Would you please point out what's the trivial thing I'm missing here...

jd

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[PHP] spec chars in file name

[afan]

I made a simple file uploader and it works fine (at lest I thought it
works fine). But, people uploaded files with so crazy names, like "MOORE's
20% Off.pdf" ?!?!?!?!?
First, it was uploaded with slash in front of apostrophy - I fixed that.
but, because of percent sign I can't link it.

How can I get rid of special chars from file names?

Thanks.

-afan

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Re: [PHP] if statement with or comparison (newbie)

[JD]

At 05:30 PM 9/8/2006, you wrote:


- Original Message - From: "JD" <[EMAIL PROTECTED]>
To: 
Sent: Friday, September 08, 2006 11:03 PM
Subject: [PHP] if statement with or comparison (newbie)



I'm trying to set up a simple conditional, something like this:

If my_variable is NOT equal to (black or white)
   echo "wrong color"
else
   echo "right color"

Here is what I have tried:

if ($_REQUEST['id'] != ("black" or "white")) {


What PHP (and any parser, for that matter) will try to do is first solve 
the innermost parenthesis.  ("black" or "white").  Many typed languages 
would give an error at this point, but PHP tries to convert anything it 
gets to whatever is more useful at the moment.  Since both "black" and 
"white" are not null or empty strings, they are evaluated as true for the 
logical comparison and true or true is always true.  Now, $_REQUEST['id'] 
might be whatever it is, but dealing with booleans as we are this far, 
anything but missing or empty string will be true as well, which will give 
you the second option.



Now, first of all, avoid negative comparissons, negative booleans are 
horrible.  Try first to straighten them up or you might get thoroughly 
confussed:



if ($_REQUEST['id] == 'black' or $_REQUEST['id'] == 'white') {
   echo 'right color';
} else {
echo 'wrong color'';
}

And so as you know why it is good to straighten negative booleans, this 
would be the twisted way


if ($_REQUEST['id] != 'black' and $_REQUEST['id'] != 'white') {
echo 'wrong color'';
} else {
   echo 'right color';
}

Notice that not only the comparisson changed but now they are joined by an 
AND instead of an OR and the then and else parts are swapped.


Satyam


Thank you all!

jd

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Re: [PHP] spec chars in file name

[Curt Zirzow]

On 9/8/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:

I made a simple file uploader and it works fine (at lest I thought it
works fine). But, people uploaded files with so crazy names, like "MOORE's
20% Off.pdf" ?!?!?!?!?


This is why it is so important that you understand how to filter data
based on where you are going to use it.  You need to ensure the chars
used in the name you are using is going to be usable.


First, it was uploaded with slash in front of apostrophy - I fixed that.
but, because of percent sign I can't link it.


This is why you need to generate a unique 'safe' file name to store
the file as. If you are refering to a database entry that you keep
track of, use the auto generated id with a safe 'name'.

A Safe name would be any filename that is able to be saved on youre
file system, the safest you could get is to filter the data with:
 $safe_filename = preg_replace('/[^a-zA-Z0-9/', '', $unsafe_name);

That will ensure that $safe _filename only has chars with A-Z or 0-9
in it, of course it doesn't address the length limitations of the
filename.


As I mentioned earlier, if you are storing this uploaded file into a
database use its auto generated id counter to ensure you dont have
name clashes, so you end up with:
 $real_safe_filename = $safe_filename . $auto_generated_atomic_id .
'.extention of file';


HTH,
Curt

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RE: [PHP] if statement with or comparison (newbie)

[Robert Cummings]

On Fri, 2006-09-08 at 15:30 -0600, Jeremy Privett wrote:
> Well, it could be this, too:
> 
> switch( $_REQUEST['id'] ) {
>   case "white":
>   echo "Right color.";
>   break;
> 
>   case "black":
>   echo "Right color.";
>   break;
> 
>   default:
>   echo "Wrong color.";
>   break;
> }

Ugh, if you're going to use a big ugly case statement for something so
trivial at least make use of the fall-through feature:



Cheers,
Rob.
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| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting  |
| a powerful, scalable system for accessing system services  |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for   |
| creating re-usable components quickly and easily.  |
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Re: [PHP] Segfault problem [long]

[Curt Zirzow]

On 9/7/06, Daniel A. Ramaley <[EMAIL PROTECTED]> wrote:

Hello. I have been struggling for a few months to solve a problem with
an Apache web server. First i'll try to describe the symptoms, then
give details about the configuration and what i have tried so far. I
would greatly appreciate any suggestions on how to diagnose and correct
the problem.


Symptom 1:

After starting Apache during periods of high load the server appears to
run fine for awhile ("awhile" is highly variable but on the order of 90
minutes) then starts returning empty pages. When the empty pages start,
Apache's error_log gets filled with lines like this:


First:
Hmm.. as noted in your post you are using apache2, what process method
are you using?
 prefork
 worker
 perchild

if you have anything other than prefork, change your apache config to
use prefork. ( this is a very common issue with random highload random
crashes).

Second:
if that doesn't work and you dont need anything special with what
apache2 brings you, try apache 1.x




[Thu Sep 07 09:09:11 2006] [notice] child pid 3579 exit signal
Segmentation fault (11), possible coredump in /etc/httpd/core

These errors are very intermittent during periods of light load. I have
had CoreDumpDirectory defined for awhile and have amassed quite a
collection of core files. This is the first few lines of what gdb
reports for one of them:

(gdb) bt
#0  0x002a99ff2492 in preg_replace_impl (ht=Variable "ht" is not
available.)
at /usr/src/redhat/BUILD/php-4.3.9/ext/pcre/php_pcre.c:1154
#1  0x002a9a0ac255 in execute (op_array=0x552afe2798)
at /usr/src/redhat/BUILD/php-4.3.9/Zend/zend_execute.c:1640
#2  0x002a9a0a9386 in execute (op_array=0x552aff7fb8)
at /usr/src/redhat/BUILD/php-4.3.9/Zend/zend_execute.c:1684
#3  0x002a9a0a9386 in execute (op_array=0x552b0e26c8)
at /usr/src/redhat/BUILD/php-4.3.9/Zend/zend_execute.c:1684
#4  0x002a9a0a9386 in execute (op_array=0x552af80db8)
at /usr/src/redhat/BUILD/php-4.3.9/Zend/zend_execute.c:1684

Symptom 2:

A further symptom of problems is found in PostgreSQL's logs. The web
applications the server runs rely on PostgreSQL, which logs several
times per minute messages like this:

Sep  7 10:16:09 sun12 postgres[7411]: [1-1] LOG:  unexpected EOF on
client connection

PostgreSQL is configured to accept 256 connections, twice as many
children as Apache should spawn.


Configuration:

The server is a Sun v40z, which is a dual Opteron box with 2 GB RAM. It
is running Red Hat Linux Enterprise AS 4.4 64-bit, with Apache 2.0.52,
PHP 4.3.9, and eAccelerator 0.9.4. The server's purpose is to run Horde
and Imp, with the latest versions of those packages and a few other
Horde components (Ingo, Passwd, and Turba).



I suppose the best thing to look for is to find a small sniplet of
code that you can reproduce the segfault and see if php 4.x and apache
2.x segfault on other systems with that setup.


otherwise there are just to many variables that could cause the
segfault it is a hard thing to trace.



Curt

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Re: [PHP] if statement with or comparison (newbie)

[tedd]

At 5:03 PM -0400 9/8/06, JD wrote:

I'm trying to set up a simple conditional, something like this:

Here is what I have tried:

if ($_REQUEST['id'] != ("black" or "white")) {



In all of the answers given thus far, no one mentioned that the use 
of $_REQUEST has a security issue with regard to where the $_REQUEST 
originated.


$_REQUEST is an array consisting of $_GET, $_POST and $_COOKIE values 
and as such, you don't know where the data came from and that might 
be important.


So, wouldn't it be better to recommend that the poster use $_GET, 
$_POST, or $_COOKIE instead of $_REQUEST?


Just an idea -- comments?

tedd

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[PHP] unset globals and memory_get_usage

[Matthew North]

Hello All,

I've been struggling with a rather obscure PHP memory issue for the
last few days.  Here's my setup:

FreeBSD 5.5
Apache2.0, PHP 5.1.6, and MySQL 4.1.x compiled from scratch (that is,
we're not using FreeBSD ports)
PHP is compiled with --enable-memory-limit and the limit is set to 8MB

We're developing a web application that involves traversal of a
hierarchical database structure (MySQL, PEAR::DB, and
PEAR::DB::DataObject).  Currently that traversal is done recursively,
and involves visiting thousands of nodes in the tree.  However, the
tree is relatively flat, and the recursion never gets more than 4 or 5
calls deep.  A severely truncated but illustrative version of the code
of interest is:



Exactly what the traverse_hierarchy function does is mostly irrelevant
to my question, as will become clear in a moment.

In practice, the first trigger_error outputs ~2.5MB (mostly in
$GLOBALS['_DB_DATAOBJECT']...), and the 2nd, after the traversal,
outputs ~8MB.  This puts us dangerously near our limit, and frequently
causes the application to quit as it reaches the 8MB limit.

The problem is this: the amount of data gathered is nowhere near the
~5.5 MB that PHP claims has been allocated during execution of
traverse_hierarchy, and attempts to figure out WHERE that memory has
been assigned have failed.  Consider the following alterations to the
code:

 &$v) {
if ($k === 'GLOBALS')
continue;
$before = memory_get_usage();
unset($v);
unset($$k);
unset($GLOBALS[$k]);
$after = memory_get_usage();
trigger_error($k.':'.($before-$after));
unset($k);
}
unset($GLOBALS);
}

?>

The above code outputs the memory allocated before and after the
traversal, and before and after a function call (clear_globals) that
iteratively 'unset's all members of the $GLOBALS array.  It also
outputs the amount of memory reclaimed after each unset of the members
of $GLOBALS.

When I wrote this I expected something like the following (ignoring
the superfluous error text generated by trigger_error):

250
800
(key):(memory released)
.
.
.
4

Where 4 is about the minimum memory footprint of an empty PHP
script as reported by memory_get_usage(), and where one of the
(key):(memory released) outputs would identify the memory hogging
culprit.  However, what I got instead was something like:

250
800
(key):(memory released)
.
.
.
550

After unsetting ALL globals within the global context (there are no
stack frames present, and therefore no non-global variables), PHP
still claimed my script was holding onto 5.5MB!!

Note that traverse_hierarchy does not do anything that results in
additional code being evaluated.  There are no new function
definitions, includes, or evals.  So the additional memory is not
being used to store any new function or class definitions.  All
non-global memory allocated by the function (theoretically) goes away
when the function exits, and all globals allocated by the function get
unset by the clear_globals function.  I'm leaking memory somewhere --
the question is where?

I've scoured my own code -- and even tentatively looked at
DB_DataObject -- for cases of circular references, and have found
none.

The question is this: Given the following assumptions:

1) PHP's memory manager reclaims memory when all references to that memory are
gone.
2) A reference is 'gone' when it goes out of scope or is 'unset'.
3) The only references that remain in the global context are
references to globals (all non-global variables have gone out of scope
and that memory reclaimed)
4) $GLOBALS is a PHP special associative array that contains the name and
value of all global variables.
5) By doing unset($GLOBALS[$varname]) and unset($$varname), where $varname is
each key of the $GLOBALS array, I am effectively eliminating all remaining
references, and all allocated memory should be reclaimed by the memory
manager (except perhaps for memory associated with function and class
definitions).
6) Resources (think database resources) are automatically freed by
garbage collection when there are no more references to them
7) No additional code is being evaluated within traverse_hierarchy
8) I'm correct that there aren't any circular references in my code
nor in any PEAR module code

Are there any other ways that user code can result in this apparent
memory leak situation?  If so, what are they?

Or, are any of my first 6 assumptions incorrect?

Thanks,

- Matthew H. North

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[PHP] Using a variable to call another variable

[Dave M G]

PHP List,

I have a list of variables:

$001
$002
$003
$004

And what I'd like to do is have a function which will select and return 
one of them. Something like:


public function returnVar($n)
{
return $(somehow n is made to reference the name of the variable);
}

And then in later scripts I can call anyone of the variables by saying

returnVar(001)

Or something like that.

I've been scratching my head on how to do this for a while. I thought 
the answer might lie somewhere in call_user_func(), but even if it is I 
can't determine how.


Any advice would be much appreciated.

Thank you for your time.

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Ubuntu 6.06 LTS
Kernel 2.6.17.7
Pentium D Dual Core Processor
PHP 5, MySQL 5, Apache 2

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Re: [PHP] Using a variable to call another variable

[Robert Cummings]

On Sat, 2006-09-09 at 12:57 +0900, Dave M G wrote:
> PHP List,
> 
> I have a list of variables:
> 
> $001
> $002
> $003
> $004
> 
> And what I'd like to do is have a function which will select and return 
> one of them. Something like:
> 
> public function returnVar($n)
> {
> return $(somehow n is made to reference the name of the variable);
> }
> 
> And then in later scripts I can call anyone of the variables by saying
> 
> returnVar(001)
> 
> Or something like that.
> 
> I've been scratching my head on how to do this for a while. I thought 
> the answer might lie somewhere in call_user_func(), but even if it is I 
> can't determine how.
> 
> Any advice would be much appreciated.



Cheers,
Rob.
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| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting  |
| a powerful, scalable system for accessing system services  |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for   |
| creating re-usable components quickly and easily.  |
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Re: [PHP] if statement with or comparison (newbie)

[Robert Cummings]

On Fri, 2006-09-08 at 18:38 -0400, tedd wrote:
> At 5:03 PM -0400 9/8/06, JD wrote:
> >I'm trying to set up a simple conditional, something like this:
> >
> >Here is what I have tried:
> >
> > if ($_REQUEST['id'] != ("black" or "white")) {
> 
> 
> In all of the answers given thus far, no one mentioned that the use 
> of $_REQUEST has a security issue with regard to where the $_REQUEST 
> originated.
> 
> $_REQUEST is an array consisting of $_GET, $_POST and $_COOKIE values 
> and as such, you don't know where the data came from and that might 
> be important.
> 
> So, wouldn't it be better to recommend that the poster use $_GET, 
> $_POST, or $_COOKIE instead of $_REQUEST?

Nope, not inherently less secure. If you are properly cleaning and
validating your data (as every good program should) then it doesn't
matter whether you pull from $_GET, $_POST, or $_REQUEST. The only time
it's bad is if you make assumptions about the value received -- AND YOU
SHOULD NEVER ASSUME YOU HAVE CLEAN DATA FROM AN OUTSIDE SOURCE!!

Cheers,
Rob.
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| InterJinn Application Framework - http://www.interjinn.com |
::
| An application and templating framework for PHP. Boasting  |
| a powerful, scalable system for accessing system services  |
| such as forms, properties, sessions, and caches. InterJinn |
| also provides an extremely flexible architecture for   |
| creating re-usable components quickly and easily.  |
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