Explain the difference between isset() and empty()?
What is scope of variable in php?
How can you declare a constant variable in php?
What the limitation of header() function in php?
What is static in php?
How to download file in php?
What language is similar to php?
What is overriding in php?
Tell me how to create a text file in php?
Is php 5 still supported?
Tell me how can we change the maximum size of the files to be uploaded?
How to delete an element from an array?
What are sql injections, how do you prevent them and what are the best practices?
Tell me how can we automatically escape incoming data?
Explain the importance of the function htmlentities.