Challenge for ZEND PHP5 Certification - 007

[hinom 5]

Exercise 7

 

 

You need to keep an eye on the existing number of objects of a given class without introducing a on-class member variable. Which of the following makes this happen?

 

a. Add member variable that gets incremented in the default constructor and decremented in the destructor.

b. Add local variable that gets incremented in the each constructor and decremented in the destructor.

c. Add static member variable that gets incremented in the each constructor and decremented in the destructor.

d. This cannot be accomplished since the creation of objects is being done dynamically via "new".

Answer: C

 

Explanation

 

http://php.net/oop5

[Mário Monteiro 179]

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