In which version of PHP was Type Hinting introduced?

 Which version of PHP introduced class type hints? 

The mysqlInd extension was introduced in which PHP version?

What will be the output of the following:

if (-2) {

echo "This is a Sunny Day!";

} else {

echo "Today is Monday!";

}

 What is the full form of DNS? 

Which PHP function can be used to get the current memory usage?

 Which one of the following function is capable of reading a specific number of characters from a file?

 Which one of the following functions can be used to concatenate array elements to form a single delimited string?

 Which function is used to split a string into a series of substrings, with each string boundary is determined by a specific separator? 

 Which of the following advanced OOP features is/are not supported by PHP? 

 i) Method overloading
ii) Multiple Inheritance
iii) Namespaces
iv) Object Cloning