Zend Zend Certified 200-550 Questions & Answers

• Question 11:

  What is the output of the following code?

  function increment ($val)

  {

  ++$val;

  }

  $val = 1;

  increment ($val);

  echo $val;

  Correct Answer: Answer: 1

• Question 12:

  What is the name of the key in $_FILES['name'] that contains the number of bytes of the uploaded file?

  Correct Answer: Answer: size

• Question 13:

  What is the output of the following code?

  function increment ($val)

  {

  $val = $val + 1;

  }

  $val = 1;

  increment ($val);

  echo $val;

  Correct Answer: Answer: 1

• Question 14:

  Which PHP function is used to validate whether the contents of $_FILES['name']['tmp_name'] have really been uploaded via HTTP, and also save the contents into another folder?

  Correct Answer: Answer: move_uploaded_file(), move_uploaded_file

• Question 15:

  What is the name of the key for the element in $_FILES['name'] that contains the provisional name of the uploaded file?

  Correct Answer: Answer: tmp_name

• Question 16:

  Which SPL class implements fixed-size storage?

  Correct Answer: Answer: SplFixedArray

• Question 17:

  Which PHP function is used to validate whether the contents of $_FILES['name']['tmp_name'] have really been uploaded via HTTP?

  Correct Answer: Answer: is_uploaded_file(), is_uploaded_file

• Question 18:

  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"

  Correct Answer: Answer: static

• Question 19:

  Your supervisor wants you to disallow PHP scripts to open remote HTTP and FTP resources using PHP's file functions. Which php.ini setting should you change accordingly?

  Correct Answer: Answer: allow_url_fopen, allow_url_fopen=off, allow_url_fopen=Off, allow_url_fopen = off, allow_url_fopen = Off

• Question 20:

  Which of the following is NOT a requirement for file uploads to work?

  A. The PHP directive file_uploads must be set to On

  B. The form's method attribute must be set to "post"

  C. The form must include a hidden input element with the name set to "MAX_FILE_SIZE"

  D. The form's enctype attribute must be set to "multipart/form-data"

  Correct Answer: C