Syntax - PHP Questions and Answers

This set of PHP Multiple Choice Questions & Answers (MCQs) focuses on “Syntax – 1”.

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

```
<?php
```
```
"Hello World"
```
```
?>
```

a) Error
b) Hello World
c) Nothing
d) Missing semicolon error
View Answer

Answer: c
Explanation: If you need to output something onto the screen you’ll need to use echo or print_r.

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

```
<?php
```
```
print_r "Hello world"
```
```
?>
```

a) Error
b) Hello World
c) Nothing
d) Missing semicolon error
View Answer

Answer: a
Explanation: The statement should be print_r(‘Hello World’) to print Hello world. Also if there is only one line then there is no requirement of a semicolon, but it is better to use it.

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

```
<?php
```
```
echo 'Hello World';
```
```
<html>
```
```
Hello world
```
```
</html>
```
```
?>
```

a) Hello world
b) Hello World Hello World
c) Hello world
Hello World
d) Syntax Error
View Answer

Answer: d
Explanation: Parse error: syntax error, unexpected ‘<‘ on line 2. You can not use the html tag inside php tags.

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

```
<?php
```
```
Echo "Hello World1";
```
```
echo " Hello world2";
```
```
ECHO " Hello world3";
```
```
?>
```

a) Hello world1 Hello world2 Hello World3
b) Hello world1
Hello world2
Hello World3
c) Error
d) Hello world1 Hello world3
View Answer

Answer: a
Explanation: In PHP, all user-defined functions, classes, and keywords (e.g. if, else, while, echo, etc.) are case-insensitive.

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

```
<?php
```
```
$color = "red";
```
```
echo "$color";
```
```
echo "$COLOR";
```
```
echo "$Color";
```
```
?>
```

a) redredred
b) redred
c) red
d) Error
View Answer

Answer: c
Explanation: In PHP, all variables are case-sensitive.

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

```
<?php
```
```
 # echo "Hello world";
```
```
 echo "# Hello world"; 
```
```
?>
```

a) # Hello world
b) Hello world# Hello world
c) Hello world
d) Error
View Answer

Answer: a
Explanation: # is a single line comment.

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

```
<?php
```
```
echo "<i>Hello World</i>"
```
```
?>
```

a) Hello world
b) Hello world in italics
c) Nothing
d) Error
View Answer

Answer: b
Explanation: You can use tags like italics, bold etc. inside php script.

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

```
<?php
```
```
echo "echo "Hello World"";
```
```
?>
```

a) Hello world
b) echo “Hello world”
c) echo Hello world
d) Error
View Answer

Answer: d
Explanation: It would have printed echo “Hello world” if the statement was echo “echo \”Hello World\””;.

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

```
<?php
```
```
<?php
```
```
echo "Hello world";
```
```
?>
```
```
?>
```

a)
b) Hello world
c) Nothing
d) Error
View Answer

Answer: d
Explanation: You can not have php tags inside a php tag.

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

```
<?php
```
```
$color = red;
```
```
echo "\$color";
```
```
?>
```

a) red
b) $color
c) \red
d) Error
View Answer

Answer:b
Explanation: To print red remove the \.

Sanfoundry Global Education & Learning Series – PHP Programming.

To practice all questions on PHP Programming, here is complete set of 1000+ Multiple Choice Questions and Answers on PHP.

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