Arrays MCQ question and answer with solution | PHP Programming

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41.
What will be the output of the following PHP code? 
<?php
$fruits = array ("apple", "mango", "peach", "pear", "orange");
$subset = array_splice ($fruits, 2);
print_r ($fruits);
?>

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42.
What will be the output of the following PHP code? 
<?php
$number = array ("4", "hello", 2);
echo (array_sum ($number));
?>

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43.
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");
$inter = array_intersect ($array1, $array2);
print_r ($inter);
?>

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44.
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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45.
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++) {
$sum += $array[$array[$i]];
}
echo $sum;
?>

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46.
What elements will the following script output? 
<?php
$array = array (true => 'a', 1 => 'b');
var_dump ($array);
?>

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48.
There are three different kind of arrays:

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49.
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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50.
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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