200-550 Exam Dumps : Zend Certified PHP Engineer

What is the output of the following code?

function z($x) {

return function ($y) use ($x) {

return str_repeat($y, $x);

};

}

$a = z(2);

$b = z(3);

echo $a(3) . $b(2);

Consider the following code. What can be said about the call to file_get_contents?

$getdata = "foo=bar";

$opts = array('http' =>

array(

'method' => 'POST',

'header' => 'Content-type: application/x-www-form-urlencoded',

'content' => $getdata

)

);

$context = stream_context_create($opts);

$result = false, $context);

In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this? (Choose 2)