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Functions MCQ question and answer with solution | PHP Programming

Learn Functions MCQ Questions and answers with easy and logical explanations. Functions MCQ in PHP programming provides all type of technical mcq questions which is important for technical exams, cumpus exams and other entrance examination Page-6 section-1

51
What will be the output of the following PHP code ? 
<?php
function TV($string)
{
  echo "my favourite TV show is ".$string;
  function b()
  {
      echo " I am here to spoil this code";
  }
}
function b()
{
  echo " I am here to spoil this code";
}
b();
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
This one works because b is declared independent of TV() also.
52
What will be the output of the following PHP code ? 
<?php
function TV($string)
{
  echo "my favourite TV show is ".$string;
  function b()
  {
      echo " I am here to spoil this code";
  }
}
function b()
{
  echo " I am here to spoil this code";
}
b();
TV("Sherlock");
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Function b is declared twice.
53
What will be the output of the following PHP code ? 
<?php
function TV($string)
{
  echo "my favourite TV show is ".$string;
  function b()
  {
    echo " I am here to spoil this code";
  }
}
a("Sherlock");
b();
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
b is declared as TV() is executed first.
54
What will be the output of the following PHP code ? 
<?php
function calc($num1, $num2)
{
    $total = $num1 * $num2; 
}
$result = calc(42, 0);
echo $result;    
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Function does not return anything.
55
What will be the output of the following PHP code ? 
<?php
function calc($num1, $num2)
{
    $total = $num1 * $num2;
    return $total; 
}
$result = calc(42, 0);
echo $result;    
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Function returns $total.
56
What will be the output of the following PHP code ? 
<?php
$var = 10;
function one()
{
    echo $var;
}
one();
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
$var is not global and hence is not available for one().
57
What will be the output of the following PHP code ? 
<?php
function mine($m)
{
    if ($m < 0)
        echo "less than 0";
    if ($ >= 0)
        echo "Not True";
}
mine(0);
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Argument is 0.
58
What will be the output of the following PHP code ? 
<?php 
$x = 75;
$y = 25; 
function addition()
{
    $GLOBALS['z'] = $GLOBALS['x'] + $GLOBALS['y'];
}
addition();
echo $z;
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
z is a variable present within the $GLOBALS array, it is also accessible from outside the function!
59
What will be the output of the following PHP code ? 
<?php
function 2myfunc()
{
    echo "Hello World";
}
2myfunc();
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
Function cannot begin with a number.
60
What will be the output of the following PHP code ? 
<?php
function _func()
{
    echo "Hello World";
}
_func();
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Function Begining with “_” is valid)