What array will you get if you convert an object to an array?

Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

What is the difference between stat() and fstat()?

The ........... function is used to read a single character from a file.

Which of the following functions do not return a timestamp? 

The ......... function parses an English textual date or time into a Unix timestamp 

Which of the following DBMSs do not have a native PHP extension?

In PHP in order to access MySQL database you will use:

The ............. statement is used to delete a table.

Can joins be nested?