Re: [PHP] incrementing in a for loop

[Burhan Khalid]

Peppy wrote:

I've searched online and am unable to find how to increment by more than one in 
a for loop.

for ($i = 1; $i <= 6; $i++) {

Is it possible to increment $i by 5?


Everyone has responded with the correct answer, but you do realize that 
this loop will only run twice? It will print 1, then 6.


If you change it to $i < 6, then it will print 1.

And just because its Tuesday, and if you happen to be using PHP 5.0.0+:

$numbers = range(1,100,5);
foreach($numbers as $number)
{
   echo $number."\n";
}

And now, back to your regularly scheduled programming

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Re: [PHP] Problem w/ reading a txt file.

[Burhan Khalid]

[EMAIL PROTECTED] wrote:

 Problem w/ reading a txt file.
 
 The error I get is "Warning: opendir(/home/pudlz/public_html ): failed to

 open dir: No such file or directory "
 
 Here's my code::
 
 $main = file('folders.txt');

 $counter = count($main);
 
 for($i=0;$i<$counter;$i++)

 {
  if ($handle = opendir("$main[$i]"))
  {
 $b=0;
   }
 }
 
 
 It's reading and extra space at the end of all my lines. How do I prevent

 that?


$main = file('folders.txt');
foreach($main as $folder)
{
   if ($handle = opendir(trim($folder))
   {
   $b = 0;
   }
}

I really don't see the point in this loop, but maybe you gave a very 
simple example.


Warmly,
Burhan

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Re: [PHP] help me to draw a listview in my website

[Burhan Khalid]

Nahalingam N. Kanakavel wrote:

hi all,

If any scripts available to draw a list view.
Plz help me, by giving some links or scripts avilable with you.


What is a list view?

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Re: [PHP] Variables not available

[Burhan Khalid]

Dotan Cohen wrote:

I am running php 5.0.4 at home on my Fedora Core 4 box. Post and get
variables are not available in my scripts. For instance, in
file.php?foo=bar the variable $foo is empty. Same thing for variables
passed in forms (get or post), which is how I came across this.

What could cause this? How could I repair it? Thanks.


This is not a 'problem'.

See http://www.php.net/manual/en/security.globals.php

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Re: [PHP] Stripping control M character (^M)

[Burhan Khalid]

Philip Hallstrom wrote:

Hello All,

I'm having some issues with carriage returns. Specifically the control M
character (^M). I have attempted to clean and validate the file I'm
creating. Here's the code.

while ($row = mysql_fetch_array($result)){

   // assign and clean vars
   $artist = trim($row[artist]);
   $tdDate = trim($row[start_date]);
   $venue = trim($row[venue]);
   $city = trim($row[CITY]);
   $state = trim($row[STATE]);
   $country = trim($row[COUNTRY]);
   $tdId = trim($row[td_id]);

   // create string

   $line = "$artist|||$tdDate||$venue|$city|$state|$country|$tdId\n";

   // validate the string

  if(preg_match("/.*.|||.*.||.*.|.*.|.*.|.*.|.*.n\//", $line)){
  // record is correct so write line to file
  fwrite($handle,$line);
  }
}


So ^M slips right by trim and my preg_match line.



Where is the carriage return appearing in your line of output?  Trim 
will remove these, but only at the beginning/end of a string so if 
$artist = "Paul\rNowosielski" that won't get cleaned up...


Maybe run them through ereg_replace() using "[\n\r]" as a pattern?


Or maybe use the m modifier?

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Re: [PHP] date and time conversion

[Burhan Khalid]

babu wrote:

Hi,
 
how to convert DD.MM.YYand HH:MM:SS into mysql date( '-MM-DD' ) and time format. I think the time is same as HH:MM:SS.


[EMAIL PROTECTED] ~ $ php -r 'echo 
date("Y-m-d",strtotime(str_replace(".","/","12.12.05")))."\n";'

2005-12-12

Hope that helps :)

See http://php.net/date
http://php.net/strtotime
http://php.net/mktime

For more information

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Re: [PHP] Date/Time Display for recurring monthly event

[Burhan Khalid]

[EMAIL PROTECTED] wrote:

Burhan,

	Thank you for replying, it is very much appreciated. 


Perhaps I did not state what I needed as well as I should have. I'm
looking for the code which displays the date of the second Thursday of each
month on a web page. I have to insert this code at 5 different locations on
that webpage for different meetings. The scenario below describes how it
needs to work.

This month for example, September, the second Thursday is September
8, 2005. Up until midnight of September 8th the date on the webpage should
read September 8, 2005. When midnight arrives on September 8th, the date
displayed should change to October 13, 2005. If you can still help me I
would be grateful.


Oh, so you want to display the next available Thursday.

  $current_month_thursday = strtotime("2nd 
Thursday",mktime(0,0,0,date("m")-1,0,2005));

  if (strtotime("now") > $current_month_thursday)
  {
  //First thursday has passed, show the first thursday
  //of the next month

  echo 'Next Meeting Date : ';
  $next_month = mktime(0,0,0,date("m")+1,0,date("Y"));
  echo date("r",strtotime("2nd Thursday",$next_month));
  } else {
 // This month's second thursday hasn't passed yet
 echo date("r",$current_month_thursday);
  }
?>

This prints :

[EMAIL PROTECTED] ~ $ php -q date2.php

Next Meeting Date : Thu, 13 Oct 2005 00:00:00 +0300

Hope this helps, and please, reply to the list and not directly to me so 
others may contribute and learn.


Regards,
Burhan





[EMAIL PROTECTED]

-Original Message-
From: Burhan Khalid [mailto:[EMAIL PROTECTED] 
Sent: Sunday, September 11, 2005 6:55 AM

To: [EMAIL PROTECTED]
Cc: php-general@lists.php.net
Subject: Re: [PHP] Date/Time Display for recurring monthly event

[EMAIL PROTECTED] wrote:


Having a heck of time getting anything to work, can anyone make a


suggestion


to the following.

I need a webpage that displays 5 recurring meeting dates, i.e. the second
Wednesday, Thursday, and Friday of each month in five different locations.



   echo date("r",strtotime("second Wednesday",strtotime("1st 
October")))."\n";
   echo date("r",strtotime("second Thursday",strtotime("1st 
October")))."\n";
   echo date("r",strtotime("second Friday",strtotime("1st 
October")))."\n\n";


   echo "For all months of the year (for loop way) : \n\n";
   for($x = 1; $x <=12; ++$x)
   {
 $current_month = date("F",mktime(0,0,0,$x,1,date("Y")));
 echo 'For the month of '.$current_month.":\n\n";
 echo date("r",strtotime("second Wednesday",strtotime("1st 
".$current_month)))."\n";
 echo date("r",strtotime("second Thursday",strtotime("1st 
".$current_month)))."\n";
 echo date("r",strtotime("second Friday",strtotime("1st 
".$current_month)))."\n\n";

   }

   echo "For all months of the year (array_map way) : \n\n";

   function findDates($month)
   {
 $current_month = date("F",mktime(0,0,0,$month,1,date("Y")));
 $x[] = date("r",strtotime("second Wednesday",strtotime("1st 
".$current_month)));
 $x[] = date("r",strtotime("second Thursday",strtotime("1st 
".$current_month)));
 $x[] = date("r",strtotime("second Friday",strtotime("1st 
".$current_month)));

 return $x;
   }

   $dates = array_map('findDates',range(1,12));
   echo 'For the month of December : '."\n";
   print_r($dates[11]);

?>

Enjoy :)

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Re: [PHP] Date/Time Display for recurring monthly event

[Burhan Khalid]

[EMAIL PROTECTED] wrote:

Having a heck of time getting anything to work, can anyone make a suggestion
to the following.

I need a webpage that displays 5 recurring meeting dates, i.e. the second
Wednesday, Thursday, and Friday of each month in five different locations.


  echo date("r",strtotime("second Wednesday",strtotime("1st 
October")))."\n";
  echo date("r",strtotime("second Thursday",strtotime("1st 
October")))."\n";
  echo date("r",strtotime("second Friday",strtotime("1st 
October")))."\n\n";


  echo "For all months of the year (for loop way) : \n\n";
  for($x = 1; $x <=12; ++$x)
  {
$current_month = date("F",mktime(0,0,0,$x,1,date("Y")));
echo 'For the month of '.$current_month.":\n\n";
echo date("r",strtotime("second Wednesday",strtotime("1st 
".$current_month)))."\n";
echo date("r",strtotime("second Thursday",strtotime("1st 
".$current_month)))."\n";
echo date("r",strtotime("second Friday",strtotime("1st 
".$current_month)))."\n\n";

  }

  echo "For all months of the year (array_map way) : \n\n";

  function findDates($month)
  {
$current_month = date("F",mktime(0,0,0,$month,1,date("Y")));
$x[] = date("r",strtotime("second Wednesday",strtotime("1st 
".$current_month)));
$x[] = date("r",strtotime("second Thursday",strtotime("1st 
".$current_month)));
$x[] = date("r",strtotime("second Friday",strtotime("1st 
".$current_month)));

return $x;
  }

  $dates = array_map('findDates',range(1,12));
  echo 'For the month of December : '."\n";
  print_r($dates[11]);

?>

Enjoy :)

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Re: [PHP] time and timestamp

[Burhan Khalid]

Jay Blanchard wrote:

[snip]
Now I am not worried about the time but I would like to know how to

(i) sort the returned rows in order (latest first)


add ORDER BY `yourdatefield` DESC to your SQL


(ii) be able to extract the individual parts of the date and display
them in 
UK format


Have no idea what is 'UK format'. But you can use the DATE_FORMAT MySQL 
function to do the same


DATE_FORMAT(`yourdatefield`, '%m.%d.%Y') as `date_formatted` [...]

Also, http://php.net/date

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Re: [PHP] Socket functions

[Burhan Khalid]

Philippe Reynolds wrote:

Greetings,

When I do an ifconfig in unix, I see the the IP address for the my 
ethernet.  It follows something called inet.


Would anyone know who to manipulate the socket functions to be able to 
extract the inet IP address fromt the eth0 section??




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Re: [PHP] Easier way to clean GET Variables ?

[Burhan Khalid]

Jasper Bryant-Greene wrote:

Burhan Khalid wrote:


Jasper Bryant-Greene wrote:


Robert Cummings wrote:


[snip]
Still need to check isset() status unless you've disabled E_NOTICE 
which

I don't advise since it's sloppy ;)





Yeah, I usually would in a real script. Just slipped my mind when 
writing that example.




I would also in a real script, not use $_MyVar.



Would you care to elaborate with some reasons for this? I find it very 
useful as a naming convention for any sort of "external variable" or 
user input, so when reading my code I can immediately tell what came 
from where.


Prepending the variable name with an underscore happens to be what PHP 
does ($_SERVER, $_GET, $_POST, $_COOKIES, so on...) so it is simpler 
just to carry on that convention.


This is exactly the reason why you shouldn't do it. You don't know when 
PHP might come out with a new 'superglobal' that conflicts with your 
$_Myfunc.


In addition, when PHP prepends $_ to a variable name, it means 
something. Specifically, it means that the variable is a 'superglobal'. 
The only exception to this that I know of is $GLOBALS.


For the reasons above, I avoid creating user variables with $_ -- 
although there is no rule regarding variable names (other than the 
syntax rules).


Sometimes, just because you can do something, doesn't mean you should.

Regards,
Burhan

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Re: [PHP] Easier way to clean GET Variables ?

[Burhan Khalid]

Jasper Bryant-Greene wrote:

Robert Cummings wrote:


On Wed, 2005-08-24 at 23:12, Jasper Bryant-Greene wrote:


Graham Anderson wrote:


Is there a way to loop thru all of these GET requests by:
putting the GET variables into an array
processing  the variable strings with trim/striptags/etc in a loop
exploding the variables back out into separate variables



I just do this:

function process_user_input($value) {
return mysql_real_escape_string(strip_tags(trim($value)));
// Or whatever processing you need
}

$_SAFE_GET = array_map('process_user_input', $_GET);
$_SAFE_POST = array_map('process_user_input', $_POST);

That way you never need to take them out of an array in the first 
place. Then you can do things like:


mysql_query("INSERT INTO table (col) VALUES ('{$_SAFE_POST['val']}')");



Still need to check isset() status unless you've disabled E_NOTICE which
I don't advise since it's sloppy ;)



Yeah, I usually would in a real script. Just slipped my mind when 
writing that example.


I would also in a real script, not use $_MyVar.

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Re: [PHP] explain to what's going with this piece of code.

[Burhan Khalid]

wayne wrote:

When I run a script from a package I download, it always
bombs out on this section. I think that its getting
the wrong parameters when it tries to make the Connection.
I use PostgreSQL as my DB.Moodle is the name of the database and
the user is moodleuser. I do not have a password on this DB.


Please ask on a Moodle support list, or on their official site. This is 
not a moodle mailing list, but a list for general php programming issues.


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Re: [PHP] XML manipulation using PHP

[Burhan Khalid]

Anas Mughal wrote:

Could someone please share with me sample code for:

- Adding an XML node to an existing XML document.


http://www.php.net/manual/en/function.domnode-append-child.php
http://www.php.net/manual/en/function.dom-domnode-appendchild.php


- Modifying the value for a given XML node in an existing XML document.


http://www.php.net/manual/en/function.dom-domcharacterdata-replacedata.php

Please, RTFM

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Re: [PHP] PHP GD and Unicode

[Burhan Khalid]

Louie Miranda wrote:
But when i try it on a image, that has been created with GD. It does 
nothing.


I just want to confirm, it what im doing with the fonts possible thru 
GD/Jpeg?


Please help, if this aint possible. I think imight purchase the PDFLib 
instead to test the unicode support.


What version of GD are you using?

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Re: [PHP] imap_open hangs...

[Burhan Khalid]

Michael Baas wrote:

Hi,

I have a script which works fine for many users, but for some it doesn't.
I've been able to narrow it down to the imap_open-Command which just hangs
'forever'. I have verified that the imap-extensions are available, but other
than that I have no ideas what's going on there, why it would not respond
and what I could possibly do to avoid such errors. I assume something must
be missing/wrong in the PHP-setup, i.e. I've had other cases where
imap-extensions were included at compile-time, but not loaded due to an
error with the RAND_seed symbol etc. - but in all those cases there was at
least an error-msg telling you something was wrong. But just silently dying
is not a very helpful :(

Any ideas anyone?


Could be a few things, such as:

1. Connection is timing out, and the time limit expired.
2. Firewall is blocking connections

Other connectivity-related issues (assuming imap_* works correctly)

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Re: [PHP] Problem between php4.4 and mysql

[Burhan Khalid]

Alex Scott wrote:

Hi there,

I discovered that our website was not working properly today (To my  
horror).

Hosted on redhat enterprise 4.

I think that there is a problem with php 4.4 talking to Apache mysql 4.1
as the php pages which do not talk to the DB are working but other  php 
pages are working.


This has been asked before, and answered (even by me).

You need http://php.net/mysqli or change your MySQL configuration so 
that it allows 'old style' passwords.


Google for the rest, or STFA :)

Regards,
Burhan

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Re: [PHP] Hardware Detection

[Burhan Khalid]

Saenal M wrote:

Hi,

Can we get information about hardware on client's PC. (e.g. hard disk, 
processor, keyboard, etc).? And How?

anyone knows? please reply back.


No, this is not possible with PHP.

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Re: [PHP] Upgrading PHP 4.2.3 to PHP 4.3.2

[Burhan Khalid]

Tim Burgan wrote:

Can I extend this..

On a live server I have PHP 4.1. If I upgrade to PHP 5, is something 
likely to stop working?


99% yes. Especially if you really mean 4.1.0 -- that's quite old.

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Re: [PHP] PHP without php.ini

[Burhan Khalid]

Bagus Nugroho wrote:

I was uncomment php_mysql.dll and added php_mysqli.dll, put edited php.ini as 
recommended, also added libmysql.dll on c:\winnt\system32. But it still doesn't work, it 
still generate "cannot load mysql extension, ...".

Previously, I was edit system variables(edit Path variable by add 
;c:\php;c:\php\ext and add PHPRC > value c:\php), also edit Registry as the 
following :
[HKLM\SOFTWARE\PHP]
"IniFilePath"="C:\PHP"

PHP installed on C:\PHP
Apache 2.0 on C:\Program Files\Apache Group\ ...
MySQL on C:\Program Files\MySQL

I hope, someone can help me to solve the problem before I'm return back to PHP4.


Did you add the following line to your Apache configuration?

# configure the path to php.ini
PHPIniDir "C:/php"

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Re: [PHP] Class / app for reading web pages and storing in a mySQL DB

[Burhan Khalid]

Alan Milnes wrote:
I'm interested in extracting a series of web pages from a Yahoo forum 
and storing them in a MySQL database so I can generate things like most 
number of posts etc.  I've searched on Google but most of the links seem 
to be for email harversters!


Anyone have any tips for where to look?


Well, you'd need something like cURL, HTTP_Client or Snoopy to get you 
started at fetching files from the web.


Then its a matter of extracting the information (parsing out the tags). 
Snoopy has this function that returns the plain text version of a page, 
or you can use regular expressions or strip_tags.


From here on out, its just normal PHP tasks of connecting to the 
database, running your queries, etc.


Oh, Snoopy is snoopy.sf.net.  HTTP_Client is in PEAR. cURL is at 
php.net/curl


Regards,
Burhan

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Re: [PHP] download snippet

[Burhan Khalid]

Roger Thomas wrote:

Am looking for code snippet to download file. It should be able to detect 
mime-types. Thanks.


http://www.php.net/manual/en/function.header.php

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Re: [PHP] dynamically selecting a function

[Burhan Khalid]

Thomas wrote:

Hi there,

 

How can I do something like this: 

 


[snip - theoretical code] if( isset($step) ) echo step.$step() ) [/snip]

 


$step would be an int (I would check that before) and then I would have all
sorts of functions like step1(), step2() . etc.


Use call_user_func().  Simple example:

function x1() { print 'x1'; }
function x2() { print 'x2'; }

$x = 1;
call_user_func('x'.$x);
$x = 2;
call_user_func('x'.$x);

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Re: [PHP] Setting up a new box from scratch?

[Burhan Khalid]

Brian Dunning wrote:

Hey all -

I have an unused Pentium box here, recent, well loaded with RAM and  HD. 
I want to turn it into a LAMP box. Never done that before; is  there a 
preferred one-stop-shop installer CD or anything (easy -  knock on 
wood)? It would be nice to end up with some kind of decent  web GUI for 
admin.


As others have responded, any linux distribution will come with packages 
to install the different components of LAMP.  The 'easy' part depends on 
which distribution you choose, and how it does the install process.


Most people recommend Madrake (now called Mandriva), Fedora (RedHat) or 
SuSE.  Ubuntu is another one I see mentioned quite often.  I would 
recommend you that you give the 'LiveCD' versions of these distributions 
a try before you decide to install one permanently.  I've heard from 
other users that ubuntu's install process is very easy, but of course, YMMV.


Also note that almost all of the distributions I mentioned here are 
designed for desktop use, which means that unless you customize the 
install, you will get a complete desktop system (including X, and one of 
KDE or Gnome).  This is fine if you want to use the PC as a workstation 
from time to time.  However, if you just want it to be a server (ie, no 
monitor, no keyboard, just plug it into the network) then you will have 
to customize the install process to uncheck those items that you will 
not need (like X, for example).


For your other part -- webmin is a great utility for managing servers if 
you are uncomfortable with the shell.  Your distribution will probably 
have a package (or RPM) for it, so just install it as per your 
distribution's install process.


Hope this helps,
Burhan

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Re: [PHP] shell_exec("zip.. ?

[Burhan Khalid]

Sam Smith wrote:

shell_exec("zip -r ddd ddd"); // don't work

safe_mode off, works from command line php. What could it be?


You need to give the full path to zip.

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Re: [PHP] mkdir, Shared Hosting?

[Burhan Khalid]

[EMAIL PROTECTED] wrote:
 
In a message dated 8/6/2005 10:59:44 P.M. Central Standard Time,  
[EMAIL PROTECTED] writes:


As far  as I know, it's not a shared hosting issue, but a permission issue.
The  site admin has not given the user under which your php scripts  run
permission to create directories and most likely files and other file  system
operations.  It's a security  issue.

Robbert


 
I see... I guess I could ask to see if I could get permission to do so  then? 
lol never hurts to ask :)


Open up your FTP client and log into your website, then change the 
permissions on your folder so that the apache process has write access 
to it.  Its really hit and miss depending on your setup.


The sure fire way (but highly insecure) way is to change the permissions 
to the directory in question to 777.


A better solution would be 755, but it may not work.

Try it, and see what you get.

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Re: [PHP] Average time spent on a page

[Burhan Khalid]

[EMAIL PROTECTED] wrote:

Hi,

How can i found out the average time users spent on a page. Anyone know a 
tutorial?

Thanks in advance for your help !!!


PLEASE ONLY SEND YOUR MESSAGE ONCE!!!

Also, remember that google is your friend.

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Re: [PHP] Can I retrieve a stored php session variable from within a javascript function?

[Burhan Khalid]

Mauricio Pellegrini wrote:
Hi , 
I wonder if it's possible to retrieve the value from a php session

variable from within a javascript function.

Does anyone have any ideas about this?


No. You cannot retrieve it, restore it, read it, send it, anything else.

You can write it from PHP :

echo 'var sess = 
'.$_SESSION['somevar'].'';


But that's it.

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