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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

1
What will be the output of the following PHP code? 
<?php
$x;
if ($x)
    print "hi" ;
else
    print "how are u";
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Uninitialized x is set to 0, thus if condition fails.
2
What will be the output of the following PHP code ? 
<?php
$x = 0;
if ($x++)
    print "hi";
else
    print "how are u";
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
x is incremented after if which evaluates to false.
3
What will be the output of the following PHP code ? 
<?php
$x;
if ($x == 0)
    print "hi" ;
else
    print "how are u";
    print "hello"
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
else condition without brackets performs the following statements only.
4
What will be the output of the following PHP code ? 
<?php
$x = 0;
if ($x == 1)
    if ($x >= 0)
	print "true";
    else
	print "false"; 
?>
Discuss
Answer & Solution
Answer: Option D
Solution:
The nested for loop is not entered if outer condition is false.
5
What will be the output of the following PHP code ? 
<?php
$a = 1;
if ($a--)
    print "True";
if ($a++)
    print "False"; 
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
Due to post increment and post decrement only the first condition is satisfied.
6
What will be the output of the following PHP code ? 
<?php
$a = 1;
if (echo $a)
    print "True";
else
    print "False"; 
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
echo does not return anything so if condition is empty.
7
What will be the output of the following PHP code ? 
<?php
$a = 1;
if (print $a)
    print "True";
else
    print "False"; 
?>
Discuss
Answer & Solution
Answer: Option A
Solution:
print returns 1 if it prints anything.
8
What will be the output of the following PHP code ? 
<?php
$a = 10;
if (1) 
    print "all";
else 
    print "some"
else 
    print "none";
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
Hanging else statement.
9
What will be the output of the following PHP code ? 
<?php
$a = 10;
if (0) 
    print "all";
 if 
 else 
     print "some"
?>
Discuss
Answer & Solution
Answer: Option C
Solution:
No else statement to end the if statement.
10
What will be the output of the following PHP code ? 
<?php
$a = "";
if ($a) 
    print "all";
if 
else 
    print "some";
?>
Discuss
Answer & Solution
Answer: Option B
Solution:
Empty string is evaluated to 0.