If-Else-If - PHP Multiple Choice Questions 3

This set of PHP Puzzles focuses on “If-Else-If – 3”.

1. 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";
```
```
?>
```

a) hi
b) hello
c) error
d) no output
View Answer

Answer: a
Explanation: In php division returns a float that is a non zero value thus evaluates to true.

2. What will be the output of the following PHP code?

```
<?php
```
```
if (!print "hi")
```
```
    if (print "hello")
```
```
print "hi";
```
```
?>
```

a) hi
b) hihellohi
c) hihi
d) no output
View Answer

Answer: a
Explanation: Print returns true and thus the first if statement also is not executed.

Sanfoundry Certification Contest of the Month is Live. 100+ Subjects. Participate Now!

3. What will be the output of the following PHP code?

```
<?php
```
```
if (print "hi" - 1)
```
```
    print "hello"
```
```
?>
```

a) hi
b) hihello
c) error
d) no output
View Answer

Answer: c
Explanation: print returns true and when 1 is subtracted it is syntax error.

4. What will be the output of the following PHP code?

```
<?php
```
```
$x = 1;
```
```
if ($x--)
```
```
    print "hi"
```
```
    $x--;
```
```
else
```
```
    print "hello"
```
```
?>
```

a) hi
b) hello
c) error
d) no output
View Answer

Answer: c
Explanation: The if statement has no brackets and it expects a else/else if after a if.

5. 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";
```
```
?>
```

a) hi
b) hello
c) error
d) no output
View Answer

Answer: a
Explanation: The operator precedence of ++ is higher than <, thus the increment happens first and then compared.

6. What will be the output of the following PHP code?

```
<?php
```
```
$a = 2;
```
```
if ($a-- - --$a - $a)
```
```
    print "hello";
```
```
else
```
```
    print "hi";
```
```
?>
```

a) hi
b) hello
c) error
d) no output
View Answer

Answer: b
Explanation: Computing the expression in the if clause,it sums upto to 2 which is a positive value.

7. What will be the output of the following PHP code?

```
<?php
```
```
$a = 2;
```
```
if ($a-- - --$a - $a)
```
```
    print "hello";
```
```
else
```
```
    print "hi";
```
```
?>
```

a) hi
b) hello
c) error
d) no output
View Answer

Answer: b
Explanation: Computing the expression in the if clause, it sums upto to 2 which is a positive value.

8. What will be the output of the following PHP code?

```
<?php
```
```
$a = "hello";
```
```
if ($a."length")
```
```
    print $a."length";
```
```
else
```
```
    print "hi";
```
```
?>
```

a) hellolength
b) 5
c) hi
d) error
View Answer

Answer: a
Explanation: The . operator appends the string, the final string will be hellolength. Since the string is non-empty, the if condition returns true.

9. What will be the output of the following PHP code?

```
<?php
```
```
$a = "hello";
```
```
if (strlen($a))
```
```
    print strlen($a);
```
```
else
```
```
    print "hi";
```
```
?>
```

a) hellolength
b) 5
c) hi
d) error
View Answer

Answer: b
Explanation: The function strlen($a) gives the length of the string, 5, which is considered true.

10. What will be the output of the following PHP code?

```
<?php
```
```
$a = "1";
```
```
$b = "0";
```
```
if ((int)$a && $b) 
```
```
    print"hi";
```
```
else 
```
```
    print "hello";
```
```
?>
```

a) hello
b) no output
c) hi
d) error
View Answer

Answer: a
Explanation: The expression is evaluated with values contained in the string, even without typecasting.

Sanfoundry Global Education & Learning Series – PHP Programming.

To practice all Puzzles on PHP, here is complete set of 250+ Multiple Choice Questions and Answers on PHP.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

« Prev - PHP Coding Questions and Answers – If-Else-If-2

» Next - PHP Coding Questions and Answers – Switch

Related Posts:

Check MCA Books
Practice Programming MCQs
Practice MCA MCQs
Check PHP Books
Apply for Programming Internship

Recommended Articles: