honestman31
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PHP Exam Question ( multiple choice )
Hello experts , I found this Question in an exam ,
( multiple choice )
Please explain your ANSWER .
You need to keep an eye on the existing number of objects of a given class without introducing a non-class member variable. Which of the following makes this happen?
a. Add a member variable that gets incremented in the default constructor and decremented in the destructor
b. Add a local variable that gets incremented in each constructor and decremented in the destructor
c. Add a static member variable that gets incremented in each constructor and decremented in the destructor
d. This cannot be accomplished since the creation of objects is being done dynamically via "new."
( multiple choice )
Please explain your ANSWER .
You need to keep an eye on the existing number of objects of a given class without introducing a non-class member variable. Which of the following makes this happen?
a. Add a member variable that gets incremented in the default constructor and decremented in the destructor
b. Add a local variable that gets incremented in each constructor and decremented in the destructor
c. Add a static member variable that gets incremented in each constructor and decremented in the destructor
d. This cannot be accomplished since the creation of objects is being done dynamically via "new."
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