What is $$ in php?
What is the difference between a session and cookies?
What is php and its advantages?
What are static variables in php?
How to remove duplicate values from a PHP Array?
Can you explain, when to use if-else if-else over switch statements?
How be the result set of mysql handled in php?
How do you create an array in php?
Is it possible to protect special characters in a query string?
How do you find the length of a string in php?
Explain the difference between unlink() and unset()?
What is boolean in php?
What is htmlentities function in php?