PHP Functions Easy Questions and Answers

What will be the output of the following PHP code ?

<?php
function fun($str)
    {
        echo "hello\n".$str;
        function Z()
        {
            echo "Inside block executed...\n";
        }
    }
function Z()
    {
        echo "Outside block executed...\n";
    }
Z();
fun("Interview Mania");
?>

Correct Option: A

Function Z is declared twice.

What will be the output of the following PHP code ?

<?php
function fun($str)
    {
        echo "Hello ".$str;
        function m()
        {
            echo "\nBlock m executed...";
        }
    }
fun("Interview Mania");
m();
?>

Correct Option: D

m is declared as fun() is executed first.

What will be the output of the following PHP code ?

<?php
function calculation($n1, $n2)
    {
        $n3 = $n1 * $n2; 
    }
$R = calculation(12, 25);
echo $R;    
?>

Correct Option: C

Function does not return anything.

What will be the output of the following PHP code ?

<?php
function calculate($n1, $n2)
    {
        $n3 = $n1 * $n2;
        return $n3; 
    }
$R = calculate(22, 23);
echo $R;    
?>

Correct Option: D

Function returns $n3.