To avoid auto submitting application we can use captcha image verification. Using captcha method we make sure the form is filled by real human, not filed by a auto submitting robot.

You have already create html report in table format. if you want to convert the html table into spreadsheet file, Microsoft Office Excel or OpenOffice.org Spreadsheet, please check this tips.

using this function we can filter bad words in sentences

This function useful for spell number to words.

This PHP function calculate difference between two dates. The result in array format contain day, hour, minute and second.

PHP is scripting language so the source code still readable for user who has access to the files. If someone has already own the source they can modify the source. To minimize the risk about someone modify the script we can encrypt the php code.

Step by step tutorial create watermark on image

This tutorial describe how to create thumbnail from image.

This Article is continued version of previous. please read previous article. In this tutorial we try to fetch data from database;

We still use ajax framework, ( http://www.xajaxproject.org ) that can help us building ajax aplication easily.

This example will describe how to check if username in database is available or not. Usefull in registration form.