Blog by Andreas Glaser » Development

Import Mysql Dump with correct character encoding

Andreas Glaser — Mon, 09 Aug 2010 11:58:05 +0000

It happened to me quite a few times now, that I imported a mysql dump file and afterwards noticed that the character encoding was broken.
To help you guys preventing this from happening use following import command.

^?View Code BASH

1	mysql -u root -p --default_character_set utf8 NAME_OF_YOUR_DATABASE < mysql_dump_file.sql

The important argument is “–default_character_set utf8” to preserve the encoding.

Enjoy

Kohana 3 – ErrorException [ Warning ]: htmlspecialchars() expects at most 3 parameters, 4 given

Andreas Glaser — Fri, 11 Jun 2010 17:05:18 +0000

^?View Code CODE

1	ErrorException [ Warning ]: htmlspecialchars() expects at most 3 parameters, 4 given

If Kohana 3 throws this exception, that means that your currently installed PHP version is lower than 5.2.3 .
This can be easily be fixed by updating PHP to the latest stable version (recommended) or by changing one of Kohana (not recommended).

To fix it code wise open following file with your preferred editor

^?View Code CODE

1	/system/classes/kohana/html.php

Search for…

^?View Code PHP

1	return htmlspecialchars((string) $value, ENT_QUOTES, Kohana::$charset, $double_encode);

… and change it into

^?View Code PHP

1	return htmlspecialchars((string) $value, ENT_QUOTES, Kohana::$charset);

Done :)

PHP Beginners – How to get online time of a user

Andreas Glaser — Mon, 24 May 2010 16:49:04 +0000

A common task in web development is to track or show a users online time.

Theory

We record and save the time (in seconds) of the users first interaction with our website. On every following click we subtract this information with the current time.

Working example

^?View Code PHP

/* tell php to start a new or resume an existing session */
session_start();
 
/* store time of first user interaction */
if(!isset($_SESSION['session.started'])) {
 $_SESSION['session.started'] = time();
}
 
/* calculate time elapsed since first click */
$onlineTime = time() - $_SESSION['session.started'];
 
/* display online time in various formats */
print 'Seconds: '.$onlineTime;
print "
\n".'Minutes:'.floor(($onlineTime / 60));
print "
\n".'Hours:'.floor(($onlineTime / 60 / 60));
print "
\n".'Days:'.floor(($onlineTime / 60 / 60 / 24));

Note: There is a file embedded within this post, please visit this post to download the file.

Enjoy!

Kohana 3 – How to get current absolute and relative url

Andreas Glaser — Mon, 17 May 2010 09:10:22 +0000

^?View Code PHP

1 2	print URL::site(Request::instance()->uri(), TRUE); // http://www.example.com/kohana/info/index print URL::site(Request::instance()->uri()); // /kohana/info/index

(Python) Mysqldump Backup 1.1

Andreas Glaser — Mon, 12 Apr 2010 08:00:02 +0000

Backups are crucial!
Since that is fact I wrote a little script in Python to easily backup mysql databases on a linux server.

Note: There is a file embedded within this post, please visit this post to download the file.

How do i configure it?
After you downloaded the script to your Linux server you will need a few Linux packages. Execute the following commands as root:

apt-get update
apt-get install python mysqldump bzip2

What does it do?
This script dumps a certain database (or all databases) into a single mysql file, which is zipped (bzip2) afterwards.

Now edit the script with your preferred editor.

vim mysqldump-backup.py

Customize the following lines:

# 2. Config
mysqlUser = “root”
mysqlPwd = “YOUR_PASSWORD”
mysqlDatabase = “–all-databases”
dumpDir = “/tmp/”
dumpFile = “mysqldump-” + strftime(“%Y-%m-%d-%H-%M-%S”, gmtime()) + “.sql”

The last step is to make the script executable:

chmod u +x mysqldump-backup-1.1.py

Thats it!

You can now run the script:

/path/to/the/script/mysqldump-backup-1.1.py

To run it daily (crontab):

crontab -e

Add at the bottom:

0 3 * * * /path/to/the/script/mysqldump-backup.py

Now your databases will be backupped daily at 03:00 am

Download

Note: There is a file embedded within this post, please visit this post to download the file.

Changelog
1.1

Removed trailing semicolons
Renamed variables

1.0

Initial release

Have fun!
Andreas Glaser aka JaZz

PHP Comments # // or /* /*

Andreas Glaser — Mon, 22 Mar 2010 10:52:15 +0000

PHP as well as most (all?) other programming languages provide different ways to comment source code.
Most common comment indicators are # , // and /* */ .

^?View Code PHP

# this is a comment
echo 'print something';
// another comment
phpinfo();
/* and one more */
var_dump($_ENV);

Which one should I use?

# vs //

I definitely tend to # since it’s only one character instead of two slashes.

# and // vs. /* */

If you plan to pack your code I would highly recommend to always use /* */ due to it’s source code packer compatibility.

/* */ also provides multi line commenting.

^?View Code PHP

/**
* this
* is a
* valid comment
**/

So long,
JaZz

JaZz Stars – JavaScript/Ajax Content Rating Class

Andreas Glaser — Fri, 04 Dec 2009 14:53:33 +0000

Every once in a while I’m using one of the freely available JavaScript classes to generate a web2.0ish content rating function. Somehow I felt like creating my own. Of course I don’t wanna hold it back… so… here it is. Enjoy!

Features

Fully Customizable
Ajax Request
Callback
Lightweight

Examples

The behavior can be easily changed by customizing following parameters

^?View Code JAVASCRIPT

        var options = {
          scale: 5,
          initialValue: 0,
          locked: false,
 
          lockAfterRating: false,
          setBackAfterRating: false,
 
          ID: 'example-004',
 
          ajax: true,
          ajaxMethod: 'post',
          ajaxAction: 'ajax-request-processor.php',
          ajaxVariable: 'Rating',
          ajaxAdditional: '&OptionalVar=123',
 
          callFunction: true,
          callFunctionName: 'callbackExample',
 
          starFilled: '../images/star-2-filled.png',
          starEmpty: '../images/star-2-empty.png'
        };
 
        new JaZzStars(options);

Download
Note: There is a file embedded within this post, please visit this post to download the file.

Changelog:
2009-12-04 – 1.0.1

Minor fixes

2009-12-04 – 1.0

Initial Release

PHP – SRCDS/HTTP Synchronizer (Linux)

Andreas Glaser — Thu, 03 Dec 2009 17:03:04 +0000

I just came across a script I have totally forgotten about, which I wrote quite a while ago.
I haven’t managed to write a real documentation so far… anyway… feel free to try it.

All you need to do, is to install php in case you haven’t done it already!

Note: There is a file embedded within this post, please visit this post to download the file.

^?View Code PHP

#! /bin/php


/*
SRCDS FastDownload Syncronizer 
Version: 1.0
 
Author:
Andreas Glaser (JaZz)
www.andreas-glaser.com
 
*/
############################*
# Variables (DO NOT TOUCH):
#
$Config = array();
$Files = array();
 
############################*
# Configuration (Required):
#
// :: CONFIG
// :: CONFIG ~ BZIP2
$Config['Bzip2']['Enabled'] = true;
 
// Enable or diable bzip2 compression
$Config['Bzip2']['Path'] = '/bin/bzip2';
 
// Path to Bzip2 (default: /bin/bzip2)
$Config['Htdocs']['Delete'] = false;
 
// Determines whether obsolete files in the webdirectory beeing deleted
$Config['Htdocs']['Override'] = false;
 
// Determines if every time you synchonize your directories the file gonna be overriden
$Config['Chmod']['Enabled'] = true;
 
// Enable or disable to set new RWX rights
$Config['Chmod']['Access'] = '755';
 
// Sets the new
$Config['Chmod']['Path'] = '/bin/chmod';
 
// Path of Chmod
$Config['Chown']['Enabled'] = true;
 
// Determines if you like to set a new user for the synchonizes web files
$Config['Chown']['User'] = 'web001';
 
// Owner of the synchronized files
$Config['Chown']['Group'] = 'web';
 
// Group of the synchronized files
$Config['Chown']['Path'] = '/bin/chown';
 
// Path to Chown
// :: CONFIG ~ PATHS
$Config['Paths']['cstrike'] = '/path/to/your/srcds/';
 
// Path to your CounterStrike Server
$Config['Paths']['htdocs'] = '/path/to/your/htcods/fastdl/';
 
// Path to your web directory
$Config['Paths']['syn_dirs'][] = 'maps';
 
// Directoriyto synchronize
$Config['Paths']['syn_dirs'][] = 'materials';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'models';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'resource';
 
// Directory to synchronize
$Config['Paths']['syn_dirs'][] = 'sound';
 
// Directory to synchronize
// :: Config Check (DO NOT TOUCH)
@exec('whoami', $Output);
if ($Output[0] !== 'root') {
  exit('Error: You must be logged in as root'."\n");
}
file_exists($Config['Paths']['cstrike']) && is_dir($Config['Paths']['cstrike']) or exit('Error: The selected cstrike directory does not exist'."\n");
file_exists($Config['Paths']['htdocs']) && is_dir($Config['Paths']['htdocs']) or exit('Error: The selected htdocs directory does not exist'."\n");
if ($Config['Bzip2']['Enabled'] === true) {
  file_exists($Config['Bzip2']['Path']) or exit('Error: Bzip2 was not found on your system'."\n");
}
if ($Config['Chmod']['Enabled'] === true) {
  file_exists($Config['Chmod']['Path']) or exit('Error: Chmod was not found on your system'."\n");
}
if ($Config['Chown']['Enabled'] === true) {
  file_exists($Config['Chown']['Path']) or exit('Error: Chown was not found on your system'."\n");
}
foreach ($Config['Paths']['syn_dirs'] AS $Key => $Val) {
  file_exists($Config['Paths']['cstrike'].$Val.'/') or exit("\n".$Val.' does not exist'."\n");
}
foreach ($Config['Paths']['htdocs'] AS $Key => $Val) {
  file_exists($Config['Paths']['cstrike'].$Val.'/') or exit("\n".$Val.' does not exist'."\n");
}
 
// :: Do it (DO NOT TOUCH)
echo "\n".'<<< START SYNCHRONIZATION >>>'."\n";
foreach ($Config['Paths']['syn_dirs'] AS $Key => $Val) {
  indexCstrike($Config['Paths']['cstrike'], $Val);
}
if ($Config['Htdocs']['Delete'] === true) {
  indexHtdocs($Config['Paths']['htdocs']);
 
  // :: Delete needless files in htdocs
  foreach ($Files['HTDOCS']['FILES'] AS $Key => $Val) {
    $SubDir = substr($Key, strlen($Config['Paths']['htdocs']));
    if ($Config['Bzip2']['Enabled'] === true) {
      if (substr($SubDir, - 4) == '.bz2') {
        $SubDir = substr($SubDir, 0, - 4);
      }
    }
    if (!isset($Files['CSTRIKE']['FILES'][$Config['Paths']['cstrike'].$SubDir])) {
      unlink($Config['Paths']['htdocs'].$SubDir);
    }
  }
 
  // :: Delete needless directories in htdocs
  foreach ($Files['HTDOCS']['DIRS'] AS $Key => $Val) {
    $SubDir = substr($Key, strlen($Config['Paths']['htdocs']));
    if ($Config['Paths']['htdocs'].$SubDir !== $Config['Paths']['htdocs']) {
      if (!isset($Files['CSTRIKE']['DIRS'][$Config['Paths']['cstrike'].$SubDir])) {
        rmdir($Config['Paths']['htdocs'].$SubDir);
      }
    }
  }
}
 
// :: Sync Directories
foreach ($Files['CSTRIKE']['DIRS'] AS $Key => $Val) {
  $SubDir = substr($Val, strlen($Config['Paths']['cstrike']), - 1);
  if (!file_exists($Config['Paths']['htdocs'].$SubDir)) {
    mkdir($Config['Paths']['htdocs'].$SubDir, 0777);
  }
}
 
// :: Sync Files
$tmp_Counter = 0;
foreach ($Files['CSTRIKE']['FILES'] AS $Key => $Val) {
  if ($tmp_Counter !== 0 && ($tmp_Counter % 4) === 0) {
    echo '.';
  }
  $tmp_Counter++;
  $SubDir = substr($Key, strlen($Config['Paths']['cstrike']));
  if (!file_exists($Config['Paths']['htdocs'].$SubDir.'.bz2')) {
    if (!file_exists($Config['Paths']['htdocs'].$SubDir)) {
      copy($Key, $Config['Paths']['htdocs'].$SubDir);
      if ($Config['Bzip2']['Enabled'] === true) {
        $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
      }
    }
    else {
      if ($Config['Htdocs']['Override'] === true || $Val['Size'] !== filesize($Config['Paths']['htdocs'].$SubDir)) {
        unlink($Config['Paths']['htdocs'].$SubDir);
        copy($Key, $Config['Paths']['htdocs'].$SubDir);
        if ($Config['Bzip2']['Enabled'] === true) {
          $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
        }
      }
      else {
        if ($Config['Bzip2']['Enabled'] === true) {
          $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
        }
      }
    }
  }
  else {
    if ($Config['Htdocs']['Override'] === true && $Config['Bzip2']['Enabled'] === true) {
      unlink($Config['Paths']['htdocs'].$SubDir.'.bz2');
      copy($Key, $Config['Paths']['htdocs'].$SubDir);
      $LastLine = system($Config['Bzip2']['Path'].' -9 '.str_replace(' ', '\ ', $Config['Paths']['htdocs'].$SubDir), $RetVal);
    }
  }
}
unset($tmp_Counter);
if ($Config['Chmod']['Enabled'] === true) {
  system('chmod -R '.$Config['Chmod']['Access'].' '.$Config['Paths']['htdocs'], $RetVal);
}
if ($Config['Chown']['Enabled'] === true) {
  system('chown -R '.$Config['Chown']['User'].':'.$Config['Chown']['Group'].' '.$Config['Paths']['htdocs'], $RetVal);
}
echo "\n".'<<< DONE >>>'."\n";
echo "\n".'| INFORMATION ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|';
echo "\n".'| Script:         SRCDS FastDownload Syncronizer                  |';
echo "\n".'| Version:        1.0                                             |';
echo "\n".'| Author:         Andreas Glaser                                  |';
echo "\n".'| Website:        www.andreas-glaser.com                          |';
echo "\n".'| Creation Date:  2009-01-14                                      |';
echo "\n".'| Last Update:    2009-01-14                                      |';
echo "\n".'|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|'."\n";
 
function indexCstrike($Dir = NULL, $SubDir = 'subdir')
{
  global $Files;
  $Dir = $Dir.$SubDir.'/';
  $Files['CSTRIKE']['DIRS'][$Dir] = $Dir;
  if (file_exists($Dir)) {
    $handler = opendir($Dir);
    while ($file = readdir($handler)) {
      if ($file != '.' && $file != '..') {
        if (!is_dir($Dir.$file)) {
          $Files['CSTRIKE']['FILES'][$Dir.$file]['Size'] = filesize($Dir.$file);
        }
        else {
          indexCstrike($Dir, $file);
        }
      }
    }
    closedir($handler);
  }
}
 
function indexHtdocs($Dir = NULL, $SubDir = 'subdir')
{
  global $Files;
  if ($SubDir !== 'subdir') {
    $Dir = $Dir.$SubDir.'/';
  }
  $Files['HTDOCS']['DIRS'][$Dir] = $Dir;
  if (file_exists($Dir)) {
    $handler = opendir($Dir);
    while ($file = readdir($handler)) {
      if ($file != '.' && $file != '..') {
        if (!is_dir($Dir.$file)) {
          $Files['HTDOCS']['FILES'][$Dir.$file]['Size'] = filesize($Dir.$file);
        }
        else {
          indexHtdocs($Dir, $file);
        }
      }
    }
    closedir($handler);
  }
}
?>

Note: There is a file embedded within this post, please visit this post to download the file.

JaZz

SVN – Add all new files at once

Andreas Glaser — Wed, 11 Nov 2009 12:06:16 +0000

Unfortunately Subversion provides no inbuilt function to add all new files at once.
This however is a solution:

^?View Code BASH

1	svn status \| grep "^?" \| awk '{print $2}' \| xargs svn add

Enjoy,
JaZz

Brazilian Cities divided by Counties

Andreas Glaser — Mon, 05 Oct 2009 13:49:56 +0000

This is a list of all major cities in Brazilian divided by counties!

Note: There is a file embedded within this post, please visit this post to download the file.

This list might be useful for my fellow developers

Greetings,
JaZz