i have just installed PHP Version 4.3.2. i have to built a Sales Executive Information System using PHP and MySQL. So, i need graphs and charts. Do i need to install JPgraph in order to generate graph. How to change from one graph to another just from a button click? Such as from bar graph to pie chart.

Well, JPGraph is a popular, well documented graphing library for PHP and it uses the GD extension functions in PHP. You don't NEED it to create graphs, but I'd recommend using it -- it's pretty complicated to create a new graphing library from scratch, and why reinvent the wheel when you've got a really nice one already available?

If you are going to use a button to change between graph styles, you can have that button be a form submit button that tells the receiving PHP script what kind of graph to generate.


Take care,

Nik
http://www.bigaction.org/

Thanks! But i were to install JPGraph, is there any changes that i need to do to the configuration file?