Zend Zend Certifications 200-710 Questions & Answers

• Question 131:

  How can the id attribute of the 2nd baz element from the XML string below be retrieved from the SimpleXML object

  found inside $xml?

  One

  Two

  A. $xml->getElementById('2');

  B. $xml->foo->bar->baz[2]['id']

  C. $xml->foo->baz[2]['id']

  D. $xml->foo->bar->baz[1]['id']

  E. $xml->bar->baz[1]['id']

  Correct Answer: E

• Question 132:

  Which of the following is NOT true about PHP traits? (Choose 2)

  A. Multiple traits can be used by a single class.

  B. A trait can implement an interface.

  C. A trait can declare a private variable.

  D. Traits are able to be auto-loaded.

  E. Traits automatically resolve conflicts based on definition order.

  Correct Answer: BE

• Question 133:

  Consider the following table data and PHP code. What is the outcome? Table data (table name "users" with primary key "id"):

  

  PHP code (assume the PDO connection is correctly established):

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

  $user = 'username';

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

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

  $cmd = "SELECT * FROM users WHERE id = :id";

  $stmt = $pdo->prepare($cmd);

  $id = 3;

  $stmt->bindParam('id', $id);

  $stmt->execute();

  $stmt->bindColumn(3, $result);

  $row = $stmt->fetch(PDO::FETCH_BOUND);

  A. The database will return no rows.

  B. The value of $row will be an array.

  C. The value of $result will be empty.

  D. The value of $result will be '[email protected]'.

  Correct Answer: D

• Question 134:

  Which of the following may be used in conjunction with CASE inside a SWITCH statement?

  A. A scalar

  B. An expression

  C. A boolean

  D. All of the above

  Correct Answer: D

• Question 135:

  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];

  A. Nothing, this code works just fine.

  B. Add __set method doing $this->v[$var] = $val

  C. Rewrite __get as: public function __get(and$v)

  D. Rewrite __get as: public function and__get($v)

  E. Make __get method static

  Correct Answer: D

• Question 136:

  What is the output of the following code?

  try {

  class MyException extends Exception {};

  try {

  throw new MyException;

  }

  catch (Exception $e) {

  echo "1:";

  throw $e;

  }

  catch (MyException $e) {

  echo "2:";

  throw $e;

  }

  }

  catch (Exception $e) {

  echo get_class($e);

  }

  A. A parser error, try cannot be followed by multiple catch

  B. 1:

  C. 2:

  D. 1:Exception

  E. 1:MyException

  F. 2:MyException

  G. MyException

  Correct Answer: E

• Question 137:

  What is the result of the following code?

  class T

  {

  const A = 42 + 1;

  }

  echo T::A;

  A. 42

  B. 43

  C. Parse error

  Correct Answer: C

• Question 138:

  What is the output of the following code? var_dump(boolval(-1));

  A. bool(true)

  B. bool(false)

  Correct Answer: A

• Question 139:

  Consider the following table data and PHP code. 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 {

  $cmd = "INSERT INTO users (id, name, email) VALUES (:id, :name, :email)";

  $stmt = $pdo->prepare($cmd);

  $stmt->bindValue('id', 1);

  $stmt->bindValue('name', 'anna');

  $stmt->bindValue('email', '[email protected]');

  $stmt->execute();

  echo "Success!";

  } catch (PDOException $e) {

  echo "Failure!";

  throw $e;

  }

  A. The INSERT will succeed and the user will see the "Success!" message.

  B. The INSERT will fail because of a primary key violation, and the user will see the "Success!" message.

  C. The INSERT will fail because of a primary key violation, and the user will see a PDO warning message.

  D. The INSERT will fail because of a primary key violation, and the user will see the "Failure!" message.

  Correct Answer: B

• Question 140:

  When a class is defined as final it:

  A. Can no longer be extended by other classes.

  B. Means methods in the class are not over-loadable.

  C. Cannot be defined as such, final is only applicable to object methods.

  D. Cannot be instantiated.

  Correct Answer: A