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Arrays
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Q41

Open question

What will be the output of the following PHP code?

<?php
$fruits = array ("apple", "mango", "peach", "pear", "orange");
 $s u b se t < s p an c l a ss = " p - b l u e " >= a r r a y_{s} pl i ce (< / s p an >$ fruits, 2);
print_r ($fruits);
?>

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Q42

Open question

What will be the output of the following PHP code?

<?php
$number = array ("4", "hello", 2);
echo (array_sum ($number));
?>

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Q43

Open question

What will be the output of the following PHP code?

<?php
$array1 = array ("KA", "LA", "CA", "MA", "TA");
$array2 = array ("KA", "IA", "CA", "GA", "TA");
 $in t er < s p an c l a ss = " p - b l u e " >= a r r a y_{i} n t er sec t (< / s p an >$ array1, $array2);
print_r ($inter);
?>

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Q44

Open question

Array values are keyed by ______ values (called indexed arrays) or using ______ values (called associative arrays). Of course, these key methods can be combined as well.

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Q45

Open question

What will the following script output?
<?php
$array = array (1, 2, 3, 5, 8, 13, 21, 34, 55);
$sum = 0;
for (

i = 0;

i < 5; $i++) {

s u m + =

array[

a r r a y [

i]];
}
echo $sum;
?>

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Q46

Open question

What elements will the following script output?

<?php
$array = array (true => 'a', 1 => 'b');
var_dump ($array);
?>

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Q47

Open question

Which array function checks if the specified key exists in the array?

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Q48

Open question

There are three different kind of arrays:

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Q49

Open question

Absent any actual need for choosing one method over the other, does passing arrays by value to a read-only function reduce performance compared to passing them by reference?

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Q50

Open question

Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

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Q51

Open question

What function computes the difference of arrays?

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Q52

Open question

What functions count elements in an array?
1. count
2. Sizeof
3. Array_Count
4. Count_array

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Q53

Open question

What array will you get if you convert an object to an array?

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Arrayspractice.

Arrays
practice.