Do csrf tokens expire?
Code to upload a file in PHP?
How to Pass JSON Data in a URL using CURL in PHP?
How to create a session? How to remove data from a session?
What is the difference between the functions unlink and unset?
Why would we use === instead of ==?
What is design pattern? Explain all including singleton pattern?
What should we do to be able to export data into an excel file?
Tell me how can you pass a variable by reference?
Difference among echo, print and printf.
What is the meaning of a final class and a final method?
What is data type in php?
What are getters and setters php?