PHP Functions Easy Questions and Answers

What will be the output of the following PHP code ?

<?php
function Calculate($p,$q)
{
    echo ($p + $q);
    echo "\n";
    echo ($p - $q);
    echo "\n";
    echo ($p * $q);
    echo "\n";
    echo ($p / $q); 
    echo "\n";
    echo ($p % $q);
}
Calculate(20,16); 
?>

Correct Option: A

Simple usage of all arithmetic operators.

What will be the output of the following PHP code ?

<?php
function fun($opt)
    {
        switch($opt)
        {
        case 10:
            echo 'Case 10 will execute.';
            break;
        case 20:
            echo 'Case 20 will execute.';
            break;
        case 30:
            echo 'Case 30 will execute.';
            break;
        case 40:
            echo 'Case 40 will execute.';
            break;
        default:
            echo 'Default will execute.';
            break;
       }
    }
fun(20);
?>

Correct Option: B

The switch statement is executed with $opt = 20.

What will be the output of the following PHP code ?

<?php
function uppercase($str)
    {
        echo ucwords($str);
    }
$fun = "uppercase";
$fun("time to do a great job.");
?>

Correct Option: B

The ucwords() function converts the first character of each word in a string to uppercase.

What will be the output of the following PHP code ?

<?php
function fun($str)
    {
        echo "my favourite fun time is ".$str;
        function m()
        {
            echo " to spend with friends";
        }
    }
m();
?>

Correct Option: D

m is undeclared if fun() is not called first.

What will be the output of the following PHP code ?

<?php
function fun($str)
    {
        echo "favourite fun time is ".$str;
        function b()
        {
            echo "Inside block executed...";
        }
    }
function p()
    {
        echo "Outside block executed...";
    }
p();
?>

Correct Option: C

This one works because p is declared independent of fun() also.