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Control Structures(Loop In PHP) MCQ question and answer with solution | PHP Programming

Learn Control Structures(Loop In PHP) MCQ Questions and answers with easy and logical explanations. Control Structures(Loop In PHP) MCQ in PHP programming provides all type of technical mcq questions which is important for technical exams, cumpus exams and other entrance examination Page-5 section-1

41
What will be the output of the following PHP code ? 
<?php
switch($b)
{
case 2:
    print "hello";
    break;
case 1:
    print "hi";
    break;
}
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
If that case does not exist then it searches for default and on not finding it does nothing.
42
What will be the output of the following PHP code ? 
<?php
switch($b)
{
case 2:
    print "hello";
    break;
case b:
    print "hi";
    break;
}
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
Case cannot be defined by a variable.
43
What will be the output of the following PHP code ? 
<?php
while()
{
    print "hi";
}
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
The while loop cannot be defined without a condition.
44
What will be the output of the following PHP code ? 
<?php
do
{
    print "hi";
}
while(0);
print "hello";
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
The do while loop executes atleast once as the condition is in the while loop.
45
What will be the output of the following PHP code ? 
<?php
$i = 0
while ($i < 3)
{
    $i++;
}
print $i;
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
The increment happens and then the check happens.
46
What will be the output of the following PHP code ? 
<?php
$i = 0
do
{
    $i++;
}
while ($i < 3);
print $i;
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
The increment happens and then the check happens.
47
What will be the output of the following PHP code ? 
<?php
$i = 0
while ($i++)
{
    print $i;
}
print $i;
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
As it is a post increment, it checks and then does not enter the loop, thus prints only 1.
48
What will be the output of the following PHP code ? 
<?php
$i = "";
while($i)
{   
    print "hi";
}
print "hello";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
While accept does not accept anything other than a 0 or any other number as false and true.
49
What will be the output of the following PHP code ? 
<?php
$i = "";
while ($i)
{   
    print "hi";
} 
while($i < 8)
    $i++;
print "hello";
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
The while loop ends only when a } is encountered.
50
What will be the output of the following PHP code ? 
<?php
$i = 0;
while($i = 10)
{   
    print "hi";
}
print "hello";
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
While condition always gives 1.