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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-3 section-1

21
What will be the output of the following PHP code ? 
<?php
$x = 1;
if ($x = $x& 0)
    print $x ;
else
    print "how are u";
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
x&0 is 0,thus evaluated to false.
22
What will be the output of the following PHP code ? 
<?php
$x = 1;
if ($x = $x& 0)
    print $x;
else
    break;
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
break is not defined for a if else ladder.
23
What will be the output of the following PHP code ? 
<?php
$x = 10;
$y = 5;
$z = 3;
if ($x / $y / $z)
    print "hi";
else
    print "hello";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
In php division returns a float that is a non zero value thus evaluates to true.
24
What will be the output of the following PHP code ? 
<?php
if (!print "hi")
    if (print "hello")
print "hi";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Print returns true and thus the first if statement also is not executed.
25
What will be the output of the following PHP code ? 
<?php
if (print "hi" - 1)
    print "hello"
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
print returns true and when 1 is subtracted it is syntax error.
26
What will be the output of the following PHP code ? 
<?php
$x = 1;
if ($x--)
    print "hi"
    $x--;
else
    print "hello"
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
The if statement has no brackets and it expects a else/else if after a if.
27
What will be the output of the following PHP code ? 
<?php
$a = 10;
$b = 11;
if ($a < ++$a || $b < ++$b)
    print "hello";
else
    print "hi";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
The operator precedence of ++ is higher than <,thus the incremenrt happens first and then compared.
28
What will be the output of the following PHP code ? 
<?php
$a = 2;
if ($a-- - --$a - $a)
    print "hello";
else
    print "hi";
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Computing the expression in the if clause,it sums upto to 2 which is a positive value.
29
What will be the output of the following PHP code ? 
<?php
$a = 2;
if ($a-- - --$a - $a)
    print "hello";
else
    print "hi";
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Computing the expression in the if clause,it sums upto to 2 which is a positive value.
30
What will be the output of the following PHP code ? 
<?php
$a = "hello";
if ($a.length)
    print $a.length;
else
    print "hi";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
The . operator appends a string and returns true.