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

   <?php
   $n  = "12";
   $n1 = "21";
   print $n+$n1;
   ?>
   

1. 1. 33

   
   
   

   2. Error

   
   
   

   3. 12+21

   
   
   

   4. 12

   
   
   

   5. 21

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   The numbers inside the double quotes are considered as integers and not string, therefore the value 33 is printed and not 12+21.

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

   <?php
   $n  = 10;
   $n1 = 12;
   print $n . "+". $n1;
   ?>
   

1. 1. 10

   
   
   

   2. 12

   
   
   

   3. 10+12

   
   
   

   4. 12+10

   
   
   

   5. Error

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   .(dot) is used to combine two parts of the statement. Example ( $n. “Hello World” ) will output 10Hello World.

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8. Which of the following php statement/statements will store 120 in variable n?
   

1. 1. 120 = $n;
      

   
   
   

   2. int $n= 120;

   
   
   

   3. int n= 120;

   
   
   

   4. $n= 120;

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   You need not specify the datatype in php.

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9. PHP files have a default file extension of_______
   

1. 1. .php

   
   
   

   2. .ph

   
   
   

   3. .html

   
   
   

   4. .xml

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   .php

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10. A PHP script should start with ___ and end with ___
    

1. 1. <? ?>

   
   
   

   2. <php>

   
   
   

   3. <?php ?>

   
   
   

   4. <? php ?>

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Every section of PHP code starts and ends by turning on and off PHP tags to let the server know that it needs to execute the PHP in between them.

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