Zend Zend Certifications 200-710 Questions & Answers

• Question 31:

  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 32:

  Which of the following is correct? (Choose 2)

  A. A class can extend more than one class.

  B. A class can implement more than one class.

  C. A class can extend more than one interface.

  D. A class can implement more than one interface.

  E. An interface can extend more than one interface.

  F. An interface can implement more than one interface.

  Correct Answer: DE

• Question 33:

  How many times will the function counter() be executed in the following code?

  function counter($start, and$stop)

  {

  if ($stop > $start)

  {

  return;

  }

  counter($start--, ++$stop);

  }

  $start = 5;

  $stop = 2;

  counter($start, $stop);

  A. 3

  B. 4

  C. 5

  D. 6

  Correct Answer: C

• Question 34:

  Which of the following statements about Reflection is correct? Which of the following statements about Reflection are correct?

  A. Reflection is an extension that can be disabled

  B. Reflection is a new extension present only in PHP 7.0+

  C. Reflection only allows to reflect on built-in classes

  D. Built-in classes can be reflected on command line using php --rc

  Correct Answer: D

• Question 35:

  Consider the following XML code:

  PHP 5.5 in 42 Hours

  Learning PHP 5.5 The Hard Way

  Which of the following SimpleXML calls prints the name of the second book?

  (Let $xml = simplexml_load_file("books.xml"); .) (Choose 2)

  A. echo $xml->books->book[2];

  B. echo $xml->books->book[1];

  C. echo $xml->book[1];

  D. echo $xml->xpath("/books/book[@id=2]");

  E. $c = $xml->children(); echo $c[1];

  Correct Answer: CE

• Question 36:

  Which of the following PHP values may NOT be encoded to a JavaScript literal using PHP's ext/json capabilities?

  A. 'Hello, world!'

  B. function(){ alert("Hello, world!"); }

  C. array('Hello, world!')

  D. array('message' => 'Hello, world!')

  Correct Answer: B

• Question 37:

  The constructs for(), foreach(), and each() can all be used to iterate an object if the object...

  A. implements ArrayAccess

  B. implements Iterator

  C. implements Iterator and ArrayAccess

  D. None of the above

  Correct Answer: C

• Question 38:

  What is the output of the following code?

  function append($str)

  {

  $str = $str.'append';

  }

  function prepend(and$str)

  {

  $str = 'prepend'.$str;

  }

  $string = 'zce';

  append(prepend($string));

  echo $string;

  A. zceappend

  B. prependzceappend

  C. prependzce

  D. zce

  Correct Answer: C

• Question 39:

  Consider the following table data and PHP code, and assume that the database supports transactions.

  What is the outcome?

  Table data (table name "users" with primary key "id"):

  id name email

  1 anna [email protected] 2 betty [email protected] 3 clara [email protected] 5 sue [email protected] PHP code (assume the PDO connection is correctly established):

  $dsn = 'mysql:host=localhost;dbname=exam';

  $user = 'username';

  $pass = '********';

  $pdo = new PDO($dsn, $user, $pass);

  try {

  $pdo->exec("INSERT INTO users (id, name, email) VALUES (6, 'bill', '[email protected]')");

  $pdo->begin();

  $pdo->exec("INSERT INTO users (id, name, email) VALUES (7, 'john', '[email protected]')");

  throw new Exception();

  } catch (Exception $e) {

  $pdo->rollBack();

  }

  A. The user 'bill' will be inserted, but the user 'john' will not be.

  B. Both user 'bill' and user 'john' will be inserted.

  C. Neither user 'bill' nor user 'john' will be inserted.

  D. The user 'bill' will not be inserted, but the user 'john' will be.

  Correct Answer: A

• Question 40:

  Which of the following will NOT instantiate a DateTime object with the current timestamp?

  A. $date = new DateTime();

  B. $date = new DateTime('@' . time());

  C. $date = new DateTime('now');

  D. $date = new DateTime(time());

  Correct Answer: D