PHP/MySQL: Warning: mysql_query(): Unable to save result set ...

Today i found a error in a tiny script i was working on.
The error Message looked like this:

Warning: mysql_query() [function.mysql-query]: Unable to save result set in /var/www/example.php on line 55

First i found a few hints about repairing or optimizing MySQL tables, but this did not work out.
After a few debugging outputs a realized that the query was not properly written.

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18. Januar 2010 | MySQL, PHP | Comments Off

ATI CCC changes CPU Throttle settings

I had a wierd problem with my notebook and a fresh Windows 7 installation.
For saving battery power a changes the minimum CPU speed to 1%, but somehow this settings was "forgotten" and resettet with the default value 100%.
But i managed to find out what happened really.

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16. Januar 2010 | Allgemein | Comments Off

PHP: phpMyAdmin3 - deactivate slider effects

For all of you who liked phpMyAdmin2 where all relevant information was visible at any time, sould be annoyed be the new slider effects in phpMyAdmin3.
I did a short search for the config value to change this and found this solution.

Add this to your config.inc.php:

// Change slider behaviour
$cfg['InitialSlidersState'] = 'open';

And your sliders will start in visible state.

phpMyAdmin download:
http://www.phpmyadmin.net/home_page/downloads.php

06. Januar 2010 | PHP | Comments Off

PHP: floor() and ceil() are slow!

A workmate mentioned, that floor($i) could be replaced with (int)$i.
I found this very interresting and did some researched about that.

floor($i); will return a float that will have the lower value of $i.
A cast will just convert $i to an integer which will cut of all decimals.
So by symptoms, these two methods are equivalent. Even if floor returns a float, PHP does dynamic casting of its variables.


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03. Januar 2010 | PHP | Kommentare (2)

PHP: Do NOT rebuild preg_* functions!

In a PHP Project i am currently helping out, i found this function:

/**
 * Replaces every char in $str that does is not in $valid array
 *
 * @param array $valid
 * @param string $str
 * @return string
 */
function cleanString($valid, $str) {
  $ret = '';
  $len = strlen($str);
  for($i = 0; $i < $len; ++$i) {
    if(in_array($str[$i], $valid, true)) {
      $ret .= $str[$i];
    }
  }
  return $ret;
}

It is a simple function for replacing chars. It works quite well, but was mainly only used for checking [^a-z0-9]. So i tested the speed of this code.

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23. Dezember 2009 | PHP | Kommentare (2)

My mirror for Geany and Lighttpd

I decided to create a simple mirror for software i recently use.
Currently you can find download.geany.org and www.lighttpd.net/download/.

Url is:
http://juliusbeckmann.de/mirror/

Just in case the project sites get down or older files get deleted there.

Hopy you enjoy it.

08. November 2009 | Allgemein | Comments Off

PHP: Easy Memcache handling

In a current project of mine i needed the use of a universal caching system.
After testing a little bit with APC i found memcache that will do the job perfectly.
So i wrote a few tiny functions for easy memcache handling.

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03. November 2009 | PHP | Comments Off

Verkaufe Domains: geekvz.(net|com|de)

Ich biete 6 Domains im Paket an. Es sind folgende Domains beinhaltet:

  • geekvz.de
  • geekvz.net
  • geekvz.com
  • geek-vz.de
  • geek-vz.net
  • geek-vz.com

Ideal um sein eigenes Verzeichnis wie z.B. StudiVZ oder Facebook aufzubauen.
Paketpreis ist 200 Euro.
Anfragen bitte per Email.

English:
I sell the mentioned domain names for a package price of 200 Euro. Contact please via Email.

18. Oktober 2009 | Allgemein | Comments Off

PHP: String Flipper Class (Rewrite)

I found this class on Twitter. Nice idea flipping chars by replacing them with their unicode upside down alternative.
But what bugged me was the code, it looked awful. So id did a rewrite to clean it up a little bit.

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04. Oktober 2009 | PHP | Comments Off

PHP: Use the ternary operator in PHP

A good program is sometimes equalized with few lines of code. But how do we program this way? One step is using the ternary operator...

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03. Oktober 2009 | PHP | Comments Off

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