Zend Zend Certifications 200-550 Questions & Answers

• Question 161:

  Your public web application needs to provide access to binary files for registered users only. How would you achieve this?

  A. Host the files on a public external file sharing service.

  B. Redirect to the file which resides in the server's document root

  C. Use PHP to send the file to the client, using the header() function to set appropriate HTTP headers

  D. PHP is used for service HTML content, not binary content

  Correct Answer: C

• Question 162:

  What is the pattern modifier for handling UTF-8 encoded preg_* functionality?

  A. e

  B. u

  C. PHP does not support UTF-8 encoded strings

  D. A pattern modifier is not needed

  Correct Answer: B

• Question 163:

  Given a php.ini setting of

  default_charset = utf-8

  what will the following code print in the browser?

  header('Content-Type: text/html; charset=iso-8859-1');

  echo 'and#9986;and#10004;and#10013;';

  A. Three Unicode characters, or unreadable text, depending on the browser

  B. and#9986;and#10004;and#10013;

  C. A blank line due to charset mismatch

  Correct Answer: A

• Question 164:

  What will the following code print out? $str = 'and#10004; one of the following'; echo str_replace('and#10004;', 'Check', $str);

  A. Check one of the following

  B. one of the following

  C. and#10004; one of the following

  Correct Answer: A

• Question 165:

  Assuming UTF-8 encoding, what is the value of $count? $count = strlen($data);

  A. 0

  B. 4

  C. 5

  D. 7

  Correct Answer: C

• Question 166:

  What is the output of this code?

  $world = 'world'; echo <<<'TEXT' hello $world TEXT;

  A. hello world

  B. hello $world

  C. PHP Parser error

  Correct Answer: C

• Question 167:

  What is the output of the following code?

  $a = array('a', 'b'=>'c');

  echo property_exists((object) $a, 'a')?'true':'false'; echo '-';

  echo property_exists((object) $a, 'b')?'true':'false';

  A. false-false

  B. false-true

  C. true-false

  D. true-true

  Correct Answer: B

• Question 168:

  What is the output of the following code?

  class Bar {

  private $a = 'b';

  public $c = 'd';

  }

  $x = (array) new Bar();

  echo array_key_exists('a', $x) ? 'true' : 'false';

  echo '-';

  echo array_key_exists('c', $x) ? 'true' : 'false';

  A. false-false

  B. false-true

  C. true-false

  D. true-true

  Correct Answer: B

• Question 169:

  Which interfaces could class C implement in order to allow each statement in the following code to work?

  (Choose 2)

  $obj = new C();

  foreach ($obj as $x => $y) {

  echo $x, $y;

  }

  A. Iterator

  B. ArrayAccess

  C. IteratorAggregate

  D. ArrayObject

  Correct Answer: AC

• Question 170:

  What is the output of the following code?

  class Foo Implements ArrayAccess {

  function offsetExists($k) { return true;}

  function offsetGet($k) {return 'a';}

  function offsetSet($k, $v) {}

  function offsetUnset($k) {}

  }

  $x = new Foo(); echo array_key_exists('foo', $x)?'true':'false';

  A. true

  B. false

  Correct Answer: B