PHP Multiple Choice Questions

  1. Which is a valid character for starting a PHP function name?
    1. Dollar Sign ($)
    2. Underscore (_)
    3. Percent (%)
    4. All of the above
Answer :
B
Explanation:
Added By : Sakshi

  1. Which PHP function or variable will return the value of current session id?
    1. session_id()
    2. get_session_id;
    3. $_SESSION['CURRENT_ID'];
    4. $_SESSION['ID']
Answer :
A
Explanation:
Added By : Sakshi


  1. What is the simplest method of computing the sum of all the elements of an array?
    1. array_intersect()
    2. array_count()
    3. array_sum()
    4. array_value_count()
Answer :
C
Explanation:
Added By : Amit

  1. What is the name of function used to convert an array into a string?
    1. explode()
    2. glue()
    3. implode()
    4. None of the above
Answer :
C
Explanation:
Added By : Amit

  1. _______ function is used to sort an array in ascending order by value while preserving key associations.
    1. ksort()
    2. asort()
    3. krsort()
    4. usort()
Answer :
B
Explanation:
Added By : Amit

  1. Array values are keyed by ______ values (called indexed arrays) or using ______ values (called associative arrays).
    1. Float, string
    2. Even number, string
    3. String, Boolean
    4. Integer, string
Answer :
D
Explanation:
Added By : Amit


  1. Which object-oriented pattern would you use to implement a class that must be instantiated only once for the entire lifespan of a script?
    1. Model-view-controller
    2. Abstract factory
    3. Singleton
    4. Proxy
Answer :
C
Explanation:
Added By : Amit

  1. In PHP 5, how can you write a class so that some of its properties cannot be accessed from outside its methods?
    1. By declaring the class as private
    2. By declaring the property as private
    3. It cannot be done
    4. By writing a property overloading method
Answer :
B
Explanation:
Added By : Amit

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