Functions MCQs with Answers 2027

Q1

Open question

Which one of the following is the right way of defining a function in PHP?

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Q2

Open question

Type Hinting was introduced in which version of PHP?

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Q3

Open question

What will happen in this function call?

<?php
function calc( $p r i ce,$ tax)	
{
     $t o t a l < s p an c l a ss = " p - b l u e " >=< / s p an >$ price + $tax;
}
$pricetag = 15;
$taxtag = 3;
calc( $p r i ce t a g,$ taxtag);	
?>

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Q4

Open question

What will be the output of the following PHP code?

<?php
function calc( $p r i ce,$ tax="")
{
     $t o t a l < s p an c l a ss = " p - b l u e " >=< / s p an >$ price + ( $p r i ce < s p an c l a ss = " p - b l u e " > * < / s p an >$ tax);
    echo "$total"; 
}
calc(42);	
?>

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Q5

Open question

Which of the following are valid function names? 1. function() 2. €() 3. .function() 4. $function()

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Q6

Open question

What will be the output of the following PHP code?

<?php
function a()
{
    function b()
    {
        echo 'I am b';
    }
    echo 'I am a';
}
a();
a();
?>

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Q7

Open question

What will be the output of the following PHP code?

<?php
function a()  
{
    function b()
    {
       echo 'I am b';
    }
    echo 'I am a';
}
b();
a();
?>

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Q8

Open question

What will be the output of the following PHP code?

<?php
$op2 = "blabla";
function foo($op1)
    {
        echo $op1;
        echo $op2;
    }
foo("hello");
?>

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Q9

Open question

A function in PHP which starts with ______ (double underscore) is know as.

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Q10

Open question

What will be the output of the following PHP code?

<?php
function foo($msg)
{
    echo "$msg";
}
$var1 = "foo";
$var1("will this work");
?>

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Q11

Open question

Which one of the following PHP functions can be used to build a function that accepts any number of arguments?

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Q12

Open question

Which one of the following PHP functions can be used to find files?

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Q13

Open question

Which of the following PHP functions can be used to get the current memory usage?

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Q14

Open question

Which of the following PHP functions can be used for generating unique id’s?

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Q15

Open question

Which one of the following functions can be used to compress a string?

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Q16

Open question

What will be the output of the following PHP code?

<?php
    echo "chr(52)";
?>

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Q17

Open question

What will be the output of the following PHP code?

<?php
    echo ord ("hi");
?>

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Q18

Open question

What will be the output of the following PHP code?

<?php
$str = "Hello World"
echo wordwrap($str,5,"n");    
?>

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Q19

Open question

What will be the output of the following PHP code?

<?php
echo ucwords("i love my country");
?>

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Q20

Open question

What will be the output of the following PHP code?

<?php
echo lcfirst("welcome to India");
?>

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