PHP Get/Set Generator

2008-07-23 15:28:19 digg this!

get/set code generator for PHP - all Java development environments allow you to do this

Projects for July 2008

2008-07-13 21:06:27 digg this!

Finish ORM classes for database and XML
Work on existing systems to implement full XML output from logic classes to display classes

PHP Variable Variables..

2008-07-01 18:41:15 digg this!

$var = "value";
$value = "some value";
echo $$var;

For some insane reason PHP allows you to have variable variables.. if you ever use these you should probably be prohibited from using a computer again

Session Manager class for cookies in PHP

2008-06-27 20:15:40 digg this!

Here is a little class I've written to make handling cookie sessions a little nicer in PHP. I'm not a big fan of cookies but PHP makes a real mess of 'transparent' session ids with search engines - making it think you have infinite web pages.. so here goes

class CookieManager{

//Copyright Mike Lang - icurtain.co.uk - please retain this header and give credit if used.

//documentation
	//set your cookie up or it will throw exceptions - name/value
	//you can then create the cookie by calling $cookie->creatCookie();
	//you can keep it alive with $cookie->keepActive();
	//you can destroy it by calling $cookie->destroy(); which sets the expire date to the past
	//plus you can do all the usual cookie config malarky - no point implementing a contructor that takes params
	//as setcookie(); already does this.

//if you have any comments or suggestions for improving or changing this class feel free to mail me
	//mike [at] bluemedia dot co dot uk

private $cookieName = null;
	private $sessValue = null;

private $time = null;
	private $expireTime = null;

private $url = null;
	private $directory = null;
	private $https = null;
	private $httpOnly = null;
	
	public function CookieManager(){
		//note if your server is in a differnt time zone then the setTime function will break		
		$this->setTime(time());
		$this->setExpireTime(0);
		//default access to entire domain
		$this->setDirectory('/');
		//can be sent unencrypted by default
		$this->setHttps(0);
		//can only be sent over http
		$this->setHttpOnly(1);
	}

public function getCookieName(){
		return $this->cookieName;
	}

public function setCookieName($cookieName){
		$this->cookieName = $cookieName;
	}

public function getSessValue(){
		return $this->sessValue;
	}

public function setSessValue($sessValue){
		$this->sessValue = $sessValue;
	}

public function getExpireTime(){
		return $this->expireTime;
	}

public function setExpireTime($expireTime){
		$this->expireTime = $expireTime;
	}

public function setUrl($url){
		$this->url = $url;
	}

public function getUrl(){
		return $this->url;
	}

public function setDirectory($directory){
		$this->directory = $directory;
	}

public function getDirectory(){
		return $this->directory;
	}

public function setHttps($https){
		$this->https = $https;
	}

public function getHttps(){
		return $this->https;
	}

public function setHttpOnly($httpOnly){
		$this->httpOnly = $httpOnly;
	}

public function getHttpOnly(){
		return $this->httpOnly;
	}

//actual code

private function isValid(){
		if($this->getSessValue()==null){
			throw new exception('Session value not set');
		}

if($this->getCookieName()==null){
			throw new exception('Cookie name not set');
		}

}

public function createCookie(){
		$this->isValid();
		$success = setcookie($this->cookieName, 
					  $this->getSessValue(), 
					  $this->getTime() + $this->getExpireTime(), 
					  $this->getDirectory(), 
					  $this->getUrl(), 
					  $this->getHttps()
					  );
		//only validates cookie creation - not user acceptance		
		return $success;
	}

public function getCookie(){
		if($this->isActive()){
			return $_COOKIE[$this->cookieName];
		}
		return null;
	}

public function isActive(){
		return isset($_COOKIE[$this->cookieName]);
	}

public function keepActive(){
		if($this->isActive()){
			$this->setTime(time());
			$this->createCookie();
		}
	}

public function destroy(){
		if($this->isActive()){		
			$this->setExpireTime(-10);
			$this->createCookie();
		}
	}

//private functions

private function setTime($time){
		$this->time = $time;
	}

private function getTime(){
		return $this->time;
	}
}

//test harness
$blah = new CookieManager();
$blah -> setCookieName('bluemedia');
$blah -> setSessValue(rand());
$blah -> setExpireTime(200);
$blah -> createCookie();
if(!$blah->isActive()){
	echo '<p>You probably don\'t have cookies enabled or this is the first time you have visited this page</p>';
};
$blah->keepActive();
echo $blah->getCookie();

remember cookies arn't nice and create privicy issues so only use them when necessary

PHP ArrayList Class

2008-06-25 13:16:47 digg this!

PHP ArrayList Class - Having spent the last year working in Java, working with PHP now makes me cry and weep in anguish.. for many reasons, one of the main ones being its' complete inability to store more than 1 thing in anything other than an array

I have attempted to create a class that handles data in a marginally more friendly manner allowing you to interate through etc.. it's still a bit BETA but it speeds up my development times.. so here it is

<?php
class ArrayList {

//Copyright Mike Lang - icurtain.co.uk - please retain this header and give credit if used.
//This is a little class I've written to make my life easier and a little more like Java
//for those occasions when i just can't afford Java hosting
//It doesnt work the same as a Java arrayList.. it's just a high level aproximation of it
//if you have any comments or suggestions for improving or changing this class feel free to mail me
//mike [at] bluemedia dot co dot uk

//ARRAY LIST CLASS STARTS COUNTING AT 0!!!!!
  private $arrayList = array();
  private $pointer = 0;

public function version(){
	echo 'version 1.0';
  }
  
  public function add($item){
    //$this->arrayList[sizeof($this->arrayList)] = $item;
    array_push($this->arrayList, $item);
  }

public function addAtPos($position, $item){
    if($position < count($this->arrayList) && $position >= 0)
    {
    $this->add($item);
    $this->shift(count($this->arrayList)-1, $position);
    }
    else
    {
    throw new Exception('List out of bounds');
    }
  }

public function getList(){
    return $this->arrayList;
  }

public function hasValue(){
    if(isset($this->arrayList[$this->pointer]))
      {
        return true;
      }
    else
      {
        return false;
      }
   }

public function hasNext(){
    if($this->pointer <= count($this->arrayList)-1)
      {
        return true;
      }
    else
      {
        return false;
      }
   }

public function next(){
    if(isset($this->arrayList[$this->pointer]))
    {
      //return $this->arrayList[($this->pointer++)-1] = $value;
	  $this->pointer++;
      return($this->arrayList[$this->pointer-1]);
    }
    else
    {
      return null;
    }
    }

public function shift($origin, $dest){
      //wont shift from last element
      if($origin > count($this->arrayList) || $origin < 0 || $dest > count($this->arrayList) || $dest < 0)
      {
      throw new Exception('List out of bounds');
      }
      if($origin > $dest)
        {
        $temp = $this->arrayList[$origin];
        $this->shiftUp($origin, $dest);
        $this->arrayList[$dest] = $temp;
        }
        else
        {
        $temp = $this->arrayList[$origin];
        $this->shiftDown($origin, $dest);
        $this->arrayList[$dest] = $temp;
        }
  }

private function shiftUp($origin, $dest)
      {
        for($i=$origin;$i>$dest;$i--)
                    {
                    $this->arrayList[$i] = $this->arrayList[$i-1];
                    }
      }

private function shiftDown($origin, $dest)
      {
        for($i=$origin;$i<$dest;$i++)
                    {
                    $this->arrayList[$i] = $this->arrayList[$i+1];
                    }
      }

public function remove($item){
		if(array_key_exists($item, $this->arrayList)){
			unset($this->arrayList[$item]);
		}
		else 
		{
		throw new Exception('key not found');
		}
	}

public function addArray($array){
	 foreach ($array as $item) {
			$this->add($item);
				}
  }
  
  public function reverse(){
    $this->arrayList = array_reverse($this->arrayList);
  }

public function size(){
    return count($this->arrayList);
  }

public function reset(){
    $this->pointer = 0;
  }

public function end(){
    $this->pointer = count($this->arrayList) -1;
  }

}
?>

With it you can while($arrayList->hasNext()){} and do all kinds of other crazy things that will bring endless listing joy to your life - mail me if you have any improvement suggestions

whois on linux

2008-06-19 07:21:08 digg this!

installing whois on a linux box

# sudo apt-get install jwhois

# yum install jwhois

or

browse to: http://packages.qa.debian.org/j/jwhois.html

find the latest version and

# wget http://ftp.debian.org/debian/pool/main/j/jwhois/jwhois_4.0.orig.tar.gz

tar xf jwhois_4.0.orig.tar.gz

# cd jwhois_4.0/

# ./configure

# make install

get your environment variables / path with:

# env
:: PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

# cd /usr/local/bin

create a symbolic link so you can call whois url

# ln -s jwhois whois

then put the link in the path

# mv whois /usr/local/bin

Firefox 3 - Http/1.1 Service Unavailable

2008-06-17 12:08:12 digg this!

Http/1.1 Service Unavailable - Mozilla's 'download' party seems to be a bit of a flop - the Microsoft moles in the marketing department really screwed them on that one ;)

search for DHCP servers on a network - dhclient

2008-06-16 09:33:26 digg this!

If you wish to search for DHCP servers on a network just type:
dhclient [interface]
and it will bring back information on all running DHCP servers on your subnet

compile kernel in gentoo

2008-06-10 08:40:34 digg this!

compile kernel in gentoo

cd /usr/src/linux/

make menuconfig

Linux Kernel v2.6.*-gentoo Configuration

make

make modules_install

cp arch/i386/boot/bzImage /boot/kernal-2.6.*-gentoo

Open Office - Unsatisfied Link Error

2008-06-09 09:55:04 digg this!

when running open office from a bootstrap routine or in headless mode for batch processing make sure the following settings to avoid an unsatisfied link error

soffice -accept="pipe,name=my_app;urp;"
java -Djava.library.path=/opt/openoffice.org/program java.app.class

useful reference on Oo: http://www.oooforum.org/forum/viewtopic.phtml?t=40263