Zend Zend Certifications 200-710 Questions & Answers

• Question 191:

  Which of the following statements about PHP is false? (Choose 2)

  A. A final class can be derived.

  B. A final class may be instantiated.

  C. A class with a final function may be derived.

  D. Static functions can be final.

  E. Properties can be final.

  Correct Answer: AE

• Question 192:

  Which php.ini setting is usually required to use an opcode cache?

  A. extension

  B. zend_extension

  C. optimizer

  D. dl

  Correct Answer: B

• Question 193:

  How should class MyObject be defined for the following code to work properly? Assume $array is an array and MyObject is a user-defined class.

  $obj = new MyObject();

  array_walk($array, $obj);

  A. MyObject should extend class Closure

  B. MyObject should implement interface Callable

  C. MyObject should implement method __call

  D. MyObject should implement method __invoke

  Correct Answer: D

• Question 194:

  Which is the most efficient way to determine if a key is present in an array, assuming the array has no NULL values?

  A. in_array('key', array_keys($a))

  B. isset($a['key'])

  C. array_key_exists('key', $a)

  D. None of the above

  Correct Answer: B

• Question 195:

  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 196:

  What is the output of the following code?

  class C {

  public $x = 1;

  function __construct() { ++$this->x; }

  function __invoke() { return ++$this->x; }

  function __toString() { return (string) --$this->x; }

  }

  $obj = new C();

  echo $obj();

  A. 0

  B. 1

  C. 2

  D. 3

  Correct Answer: D

• Question 197:

  What exception type will catch the error raised by the expression 2 / 0?

  A. LogicException

  B. RangeException

  C. DivisionByZeroError

  D. ArithmeticError

  Correct Answer: C

• Question 198:

  Which methods can be used to overload object properties? (Choose 2)

  A. set(), get()

  B. __set(), __get()

  C. __put(), __receive(), __exists()

  D. set(), get(), isset()

  E. __isset(), __unset()

  Correct Answer: BE

• Question 199:

  How many elements does the $matches array contain after the following function call is performed? preg_match('/^(\d{1,2}([a-z]+))(?:\s*)\S+ (?=201[0-9])/', '21st March 2014', $matches);

  A. 1

  B. 2

  C. 3

  D. 4

  Correct Answer: C

• Question 200:

  When tracking upload progress with sessions, the values of 2 INI settings are needed to determine the key in $_SESSION of the upload progress data. What are the INI settings? (Choose 2)

  A. session.upload_progress.file

  B. session.upload_progress.key

  C. session.upload_progress.prefix

  D. session.upload_progress.freq

  E. session.upload_progress.name

  Correct Answer: CE