What is the difference between the include() and require() language constructs?

Which function displays a formatted string?

Which is not a valid key type for arrays in PHP?

What does delete() function do?

Which PHP function sends a raw HTTP header to a client?

Which will return the value of current session id?

Correct keyword in SQL?

How do you start a session in PHP?

Which is not related with respect to calculating the size of a file?

Correct way to open the file 'sample.txt' as read only?

Which function can convert a comma separated string into an array using a single call?