Find - IfFound - IfNotFound in CodeIgniter

Can you please correct where it is wrong?

I can, but it seems rather useless. I don't mean to be rude, but your question indicates that you have poor understanding of php. If you want to move forward with CodeIgniter, some basic knowledge of php, javascript, html and css is really necessary. It hardly helps if I write the code for you. I already gave you a good example. Analyze that line by line until you completely understand what this code is doing. Then you will be able to work it out for your own situation.
Good luck!