Select the correct statement about setcookie() function:

What is the output? $foo = 400; $bar = 10; echo $foo . '+'. $bar;

Which method of Exception class returns formated string of trace?

How to get client IP address in a PHP script?

Correct way to add 1 to the $count variable?

How do you remove the X-Powered-By header?

natsort( array( 'i10', 'i1', 'i20' ) ) = ?

Given the statement, mysqli_connect(“happy.com”, “hot24”, “015A#”, “ABC”); “happy.com” and “hot24” respectively refer to ?

What's the MIME type for images with correct extension 'jpg'?

Which PHP function tells whether a file exists and is readable?

function foo($bar) { if($bar['soap'] != 'Zest') { return $bar['soap']; } } Which best describes the function foo()?