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01/08/09

Permalink 10:21:35 am, Categories: General IT articles  

XML driven flash components

Flash can be very nice to enhance the usability and aesthetic of the web site. A graphic designer might be very keen to get creative and design his/her own flash. For a programmer, he would like something that can be controlled by XML without getting his hands dirty to write action scripts. XML itself can be generated using any server side script such as PHP/Python/Perl/Ruby/ASP.

Here you can find a lot of XML driven flash:
http://www.flashcomponents.net/

and here a few show cases
http://www.flashxml.net/


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30/07/09

Permalink 11:31:28 pm, Categories: General IT articles  

Create data graph on the fly

Generating graph from data collected on the internet and shows it on the web can be very useful.
I found 2 ways to create data graph/chart on the fly:

1. Use the google api
http://code.google.com/apis/chart/basics.html

To create a simple pie chart, all you need is one line of html

XML:

<img src="http://chart.apis.google.com/chart?chs=350x100&amp;chd=t:60,40&amp;cht=p3&amp;chl=Web_designers|Programmers"  alt="Sample chart" />

And you will have
Sample chart

2. Use php + GD Library
to create the same chart you need the following codes. Codes are based on

http://www.talkphp.com/advanced-php-programming/2508-3d-pie-charts-php-gd.html

with small changes

PHP:

$image imagecreatetruecolor(300300);
// allocate some solors
$white    imagecolorallocate($image0xFF0xFF0xFF);
$gray     imagecolorallocate($image0xC00xC00xC0);
$darkgray imagecolorallocate($image0x900x900x90);
$navy     imagecolorallocate($image0x000x000x80);
$darknavy imagecolorallocate($image0x000x000x50);
$red      imagecolorallocate($image0xFF0x000x00);
$darkred  imagecolorallocate($image0x900x000x00);
 
//the white background will be transparent:
imageFill($image00$white);
imageColorTransparent($image$white);
 
 
for ($i 160$i 150$i--) {
   imagefilledarc($image150$i200100045$darknavyIMG_ARC_PIE);
   imagefilledarc($image150$i2001004575 $darkgrayIMG_ARC_PIE);
   imagefilledarc($image150$i20010075360 $darkredIMG_ARC_PIE);
}
 
imagefilledarc($image150150200100045$navyIMG_ARC_PIE);
imagefilledarc($image1501502001004575 $grayIMG_ARC_PIE);
imagefilledarc($image15015020010075360 $redIMG_ARC_PIE);
 
// flush image
header('Content-type: image/png');
imagepng($image);
imagedestroy($image);

If you need to know more about using GD Lib to create graph on the web, please visit a tutorial at

http://php.about.com/od/advancedphp/ss/gd_library_6.htm

You need to be careful when you are using server side script to generate graph as it is CPU intensive.


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29/07/09

Permalink 09:40:57 am, Categories: General IT articles  

Windows Small Business Server (SBS)'s backup disconnect remote desktop

I don’t anyone of you know why this could happen:

A Windows SBS 2003 would disconnect a remote desktop session when it starts its backup. The default windows backup verifies the backup copy and it takes forever. I have to edit the executive file to stop the verification following this guide:

http://www.slickit.ca/2009/05/turn-verify-off-sbs-2003-backup.html

This allows me to re-schedual backup to starts later at night so people can do their work at the early evenings. But this just avoids the problem.

Please let me know if you any idea …


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Permalink 12:54:22 am, Categories: General IT articles  

Are you are web design agent?

If you are a web design agent and looking for good quality web script programmer, please feel free to contact us. We provide programming service for web design agents in UK.

We have good experience in writing CMS, e-commerce and web-based application in PHP/Mysql, Javascript (Ajax). If you have questions in technical issues, please also feel free to ask.

WE will provide a strong portfolio if required.

Have a good day!


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Permalink 12:47:12 am, Categories: General IT articles  

Javascript form validator script

I have been using the a javascript from

http://www.javascript-coder.com/html-form/javascript-form-validation.phtml

for awhile and I totally like it. It’s very easy to use in order to validate the web form. What’s more, it is very easy to extend.

Here is how to extend the script so that it can find out if a user input the right confirm email address or not.

Code:

function confirmEmail ()
        {
          var frm = document.forms["custForm"];
          if(frm.email.value != frm.confirm_email.value)
          {
            sfm_show_error_msg("Confirm email does not match ");
            return false;
          }
          else
          {
            return true;
          }
        }
 
  frmvalidator.setAddnlValidationFunction("confirmEmail");

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