I have been a assigned a new module to work on..

its login module..

What is the difference between sessions and cookies and when to use sessions and when to use cookies?

Can anyone tell?

Thanks in advance..

I am new to PHP... and i got one project of it.. n have few knowledge..

can anyone tell me How to search for a string or character within a string ?

thanks in advance.. :)

What is d difference between $_GET Variable and $_POST Variable?

Can anyone tell me?