Peter Sobieraj

Problem:

You can find your self wondering why if you put border to table let say color #F00 it have different colors at different borwsers.
Funny
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Today I was fighting with strange error.

 
SELECT
  -- ...
  (
  (SELECT SUM(t.v)
   FROM tab1 t
   )
  +
  (SELECT SUM(t.v)
   FROM tab2 t
   )
  ) AS x
-- ...
 

Something like that give me NULL in x in every row even if there was a lot of records in tab1. (more...)

Notepad++ is great free text editor.
You can download it at http://notepad-plus-plus.org/.
It have regex replace option.
So how it work ?
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It's not so hard to do it if you have good example. Unfortunately it was hard for me to find good example. So I describe it here. (more...)

Today I create new wordpress theme for my site.
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While ago I was fighting with one bug. There was code witch was working, but stop working when I add empty foreach.

//that work with rest of code
function fun(){
  $table= array();
  //...
  return $table;
}
 
//that do not work with rest of code
function fun(){
  $table= array();
  //...
  foreach( $table as $key => $val ){}
  return $table;
}
 

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We all know Flash and Java. If you write webpage with it and if your users install it, then they can watch animation elements on your web page. But today I was playing with something new called "Canvas". (more...)

Few months ago I create program "Log Watcher" to observe logs of my webpage. I put it to sourceforge.net here so maybe somebody will also use it. In last week I recived emial with information that my program get Softpedia certification. (more...)

This tutorial is for thous who can programing but don't know Python language. I will show how to use variables, loops, arrays, functions, and how to write scripts. (more...)

In that lesson I will describe what are variables. (more...)