Zend PHP 5.3 Certification v6.1
Question 1
What function can reverse the order of values in an array without the loss of key information?
- A. array_flip()
- B. array_reverse()
- C. rsort()
- D. krsort()
- E. array_multisort()
Answer : B
Question 2
What is the output of the following code?
- A. false-false
- B. false-true
- C. true-false
- D. true-true
Answer : B
Question 3
Which of the following encryption standards provides symmetric key encryption? (Choose
2)
- A. AES
- B. Blowfish
- C. DES
- D. RSA
Answer : AB
Question 4
Webservices are primarily meant to support
- A. business-to-business communication
- B. machine-to-machine interaction
- C. improved accessibility for websites
Answer : B
Question 5
What do bytecode caches do?
- A. Cache the output of PHP scripts for reuse
- B. Translate PHP bytecode into machine code and cache the results
- C. Save the results of the compilation of PHP scripts for reuse
- D. Save large data structures (e.g. database result sets) in memory for reuse
Answer : C
Question 6
What will be the output value of the following code?
$array = array(1,2,3);
while (list(,$v) = each($array));
var_dump(current($array));
- A. bool(false)
- B. int(3)
- C. int(1)
- D. NULL
- E. Array
Answer : A
Question 7
What is the output of the following code?
Answer : 1
Question 8
What is the output of the following code?
- A. An error
- B. 1,1,1,1,1,1,1,1,1,1,
- C. 1,1,2,3,5,8,13,21,34,55,
- D. Nothing
Answer : B
Question 9
Consider the following code. Which keyword should be used in the line marked in bold to make this code work as intended?
Answer : static
Question 10
What is the output of the following code?
- A. A syntax error in the function declaration line
- B. An error, because null is not an instance of 'a'
- C. Nothing, because a null value is being passed to renderVal()
- D. NULL
Answer : B
Question 11
What is the result of the following code?
- A. Parse error
- B. 3.14
- C. PI
- D. T::PI
Answer : B
Question 12
When retrieving data from URLs, what are valid ways to make sure all file_get_contents calls send a certain user agent string? (Choose 2)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer : A,D
Question 13
In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this?
- A. Store session data in a different location with session. save_Path .
- B. Store session data in a database.
- C. Enable safe_mode .
- D. Set session.name to something unique.
Answer : B
Question 14
Which elements can be encapsulated by namespaces?
- A. Only classes
- B. Classes, functions and constants
- C. Classes, functions, constants and variables
Answer : B
Question 15
What is the return value of the following code substr_compare("foobar", "bar", 3);
- A. -1
- B. 1
- C. TRUE
- D. 0
- E. FALSE
Answer : D