Explain about require and include function?
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For printing out strings, there are echo, print and printf. Explain the differences.
How can we check the value of a given variable is a number?
How to access a global variable inside a function?
What is the use of $_server and $_env?
What is csrf cookie?
What is meant by an associative array?
how to extract month from given date by using string functions?
Tell me how can we get the error when there is a problem to upload a file?
Why php is used?
What is die in php?
Write down the code for save an uploaded file in php.
How to define a function with any number of arguments?