What does "===" operator do in PHP?

In which order are methods called in the below PHP code? $object->method1()->method2()->method3()

Which will return the client's IP address in PHP?

PHP ... are used to validate and sanitize external input.

Which is used to print today's date in PHP?

Output of this code? php $x = 1; while ($x <= 3){ echo X}

Which PHP function finds the position of the last occurrence of a substring within a string?

Which variable does PHP make automatically available to you?

Choose the correct value for $i. $i = 2; $i++;

What is meant by nl2br()?

Which one is NOT a command for sending output to the standard output?