Which of the following items in the $_SERVER superglobal are important for authenticating the client when using HTTP Basic authentication? (Choose 2)
Consider the following two files. When you run test.php, what would the output look like?
test.php:
include "MyString.php";
print ",";
print strlen("Hello world!");
MyString.php:
namespace MyFramework\String;
function strlen($str)
{
return \strlen($str)*2; // return double the string length
}
print strlen("Hello world!")
Given the following code, what is correct?
function f(stdClass &$x = NULL) { $x = 42; }
$z = new stdClass;
f($z);
var_dump($z);
In the following code, which line should be changed so it outputs the number 2:
class A {
protected $x = array(); /* A */
public function getX() { /* B */
return $this->x; /* C */
}
}
$a = new A(); /* D */
array_push($a->getX(), "one");
array_push($a->getX(), "two");
echo count($a->getX());
Consider the following code. Which keyword should be used in the line marked with "KEYWORD" instead of "self" to make this code work as intended?
abstract class Base {
protected function __construct() {
}
public static function create() {
return new self(); // KEYWORD
}
abstract function action();
}
class Item extends Base {
public function action() { echo __CLASS__; }
}
$item = Item::create();
$item->action(); // outputs "Item"
What is the name of the method that can be used to provide read access to virtual properties in a class?
Which PHP function retrieves a list of HTTP headers that have been sent as part of the HTTP response or are ready to be sent?
What is the output of the following code?
function z($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 change must be made to the class for the code to work as written?
class Magic {
protected $v = array("a" => 1, "b" => 2, "c" => 3);
public function __get($v) {
return $this->v[$v];
}
}
$m = new Magic();
$m->d[] = 4;
echo $m->d[0];
What is the output of the following code?
class A {
public $a = 1;
public function __construct($a) { $this->a = $a; }
public function mul() {
return function($x) {
return $this->a*$x;
};
}
}
$a = new A(2);
$a->mul = function($x) {
return $x*$x;
};
$m = $a->mul();
echo $m(3);
PHP's array functions such as array_values() can be used on an object if the object...
Under what condition may HTTP headers be set from PHP if there is content echoed prior to the header function being used?
The XML document below has been parsed into $xml via SimpleXML. How can the value of
Which of the following superglobals does not necessarily contain data from the client?
Which of the following PHP functions can be used to set the HTTP response code? (Choose 2)
Which of the following tasks can be achieved by using magic methods? (Choose 3)
Which constant must be passed as the second argument to htmlentities() to convert single quotes (') to HTML entities?
What is the result of the following code?
define('PI', 3.14);
class T
{
const PI = PI;
}
class Math
{
const PI = T::PI;
}
echo Math::PI;
What is the output of the following code?
$f = function () { return "hello"; };
echo gettype($f);
Given the following DateTime objects, what can you use to compare the two dates and indicate that $date2 is the later of the two dates?
$date1 = new DateTime('2014-02-03');
$date2 = new DateTime('2014-03-02');
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TESTED 21 Nov 2024
