16. Which of the functions is used to sort an array in descending order?
    

1. 1. dsort()

   
   
   

   2. rsort()

   
   
   

   3. asort()

   
   
   

   4. sort()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   sort() function is used to sort in ascending order whereas rsort() meaning reverse sort is used for sorting in descending order.

---

17. What will be the output of the following PHP code?
    

    <?php
    $subject = array('a' => 'Math',  'b' => 'Science', 'c'=> 'Geography');
    asort($subject);
    foreach ($subject as $key => $val)
    {
    echo "$key = $val";
    echo "\n";
    }
    ?>
    

1. 1. Error

   
   
   

   2. c = Geography
      a = Math
      b = Science

   
   
   

   3. Nothing

   
   
   

   4. a = Math
      b = Science
      c = Geography

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   The function asort() sorts the array in ascending order, except that the key/value corresponding is maintained.

---

---

18. What will be the output of the following PHP code?
    

    <?php
    $str = array ("Rahul", "Ajit", "Aju", "Ats");
    sort($str);
    print_r($str);
    ?>
    

1. 1. Array
      (
          [2] => Ats
          [3] => Rahul
      )
      

   
   
   

   2. Array
      (
          [0] => Ajit
          [1] => Aju
      )
      

   
   
   

   3. Array
      (
          [0] => Ajit
          [1] => Aju
          [2] => Ats
          [3] => Rahul
      )
      

   
   
   

   4. Array
      (
          [1] => Aju
          [2] => Ats
      )
      

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   While sorting each character is compared with the others and sorted using ascii values therefore we the sorted array to be like option c.

---

19. Which of the following function should be used, to sort the array in case?
    

1. 1. natcasesort()

   
   
   

   2. naturalsort()

   
   
   

   3. casesort()

   
   
   

   4. dsort()

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   natcasesort()

---

---

20. What will be the output of the following PHP code?
    

    <?php
    $num = array ("2","3","4", "5", "6", "7", "8", "9", "10");
    $face = array ("A", "J", "Q", "K");
    $cards = array_merge ($face, $num);
    print_r ($cards);
    ?>
    

1. 1. Array
      (
          [0] => A
          [1] => J
          [2] => Q
          [3] => K
      )
      

   
   
   

   2. Array
      (
          [0] => A
          [1] => J
          [2] => Q
          [3] => K
          [4] => 2
          [5] => 3
          [6] => 4
          [7] => 5
          [8] => 6
          [9] => 7
          [10] => 8
          [11] => 9
          [12] => 10
      )
      

   
   
   

   3. Array
      (
           [4] => 2
          [5] => 3
          [6] => 4
          [7] => 5
          [8] => 6
          [9] => 7
          [10] => 8
          [11] => 9
          [12] => 10
      )
      

   
   
   

   4. Array
      (
          [2] => Q
          [3] => K
          [4] => 2
          [5] => 3
          [6] => 4
          [7] => 5
          [8] => 6
      )
      

   
   
   

   5. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   The resulting array will begin with the first input array parameter, appending each subsequent array parameter in the order of appearance.

---