Which of the following is not a valid DOM method in PHP?

What's the output? '; print_r($item); echo ''; ?>

Which is false about cURL?

Function to remove the first element of an array?

Which is true about the 'new' operator in PHP?

Which environment variable is used to fetch the IP address of the user in a PHP application?

Which function makes keys from array to become values and values from array to become keys?

What does DRY stand for?

What's the output? $a = 'b'; $b = 0; echo '${$a}';

Function to calculate the sum of values in an array

Function to insert one or more elements to the end of an array.