Is not null in php?
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Is php free to use?
What is substr in php?
How to test if a variable is an array?
How can we check the value of a given variable is alphanumeric?
Tell me how is it possible to return a value from a function?
How to get ip address of clients machine?
1.What are the difference between echo , print , print_r ? else this 3 can we show output to a client in some other way?
How does session work in php?
How can you get the size of an image in PHP?
What is a namespace in php?
What is php and why we use it?
What is the difference between the include() and require() functions?