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Output of PHP programs | Set 4

Predict the output of below PHP programs:

Question 1

<?php
  
"Welcome to GeeksforGeeks!"
  
?>

Options:

  1. Error
  2. Welcome to GeeksforGeeks!
  3. Nothing
  4. Missing semicolon error

Output:

Nothing

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



Question 2

<?php
  
print_r "I am intern at GeeksforGeeks."
  
?>

Options:

  1. Error
  2. I am intern at GeeksforGeeks.
  3. Nothing
  4. Missing semicolon error

Output:

Error

Explanation: The statement should be print_r(‘I am intern at GeeksforGeeks.’) 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.

Question 3

<?php
  
echo 'GeeksforGeeks';
  
<html>
GeeksforGeeks
</html>
  
?>

Options:

  1. GeeksforGeeks
  2. GeeksforGeeks GeeksforGeeks
  3. GeeksforGeeks
    GeeksforGeeks
  4. Syntax Error

Output:

Syntax Error

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

Question 4

<?php
  
Echo "GeeksforGeeks1";
echo " GeeksforGeeks2";
ECHO " GeeksforGeeks3";
  
?>

Options:



  1. GeeksforGeeks1 GeeksforGeeks2 GeeksforGeeks3
  2. GeeksforGeeks1
    GeeksforGeeks2
    GeeksforGeeks3
  3. Error
  4. GeeksforGeeks1 GeeksforGeeks3

Output:

GeeksforGeeks1 GeeksforGeeks2 GeeksforGeeks3

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

Question 5

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

Options:

  1. greengreengreen
  2. greengreen
  3. green
  4. Error

Output:

green

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

Question 6

<?php # echo "GeeksforGeeks";
   
echo "# GeeksforGeeks"
  
?>

Options:

  1. # GeeksforGeeks
  2. GeeksforGeeks# GeeksforGeeks
  3. GeeksforGeeks
  4. Error

Output:

# GeeksforGeeks

Question 7

<?php
  
echo "echo "GeeksforGeeks"";
  
?>

Options:

  1. GeeksforGeeks
  2. echo “GeeksforGeeks”
  3. echo GeeksforGeeks
  4. Error

Output:

Error

Explanation: It would have printed echo “GeeksforGeeks” if the statement was echo “echo ”GeeksforGeeks””;.



This article is attributed to GeeksforGeeks.org

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