PHP Variables MCQs

PHP Variables MCQs : This section focuses on "Variable" in PHP. These Multiple Choice Questions (MCQ) should be practiced to improve the PHP skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations.

1. Any variables declared in PHP must begin with a _____?

A. .
B. #
C. &
D. $

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2. A variable can have ________?

A. long descriptive names
B. short names
C. Both A and B
D. None of the above

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3. A variable name can only contain ____________?

A. alphanumeric characters
B. underscores
C. Both A and B
D. None of the above

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4. Variable names in PHP must start with ?

A. letter
B. underscore
C. no numbers
D. All of the above

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5. PHP variables are case-sensitive?

A. True
B. False
C. For "sum" variable it is case-sensitive
D. None of the above

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6. How many variable scope are there in php?

A. 2
B. 3
C. 1
D. 4

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

<?php
$x = 1;
$y = 2;
$z = "$x + $y";
echo "$z";
?<

A. $x + $y
B. 3
C. 1+2
D. 12

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

<?php
$x = 3.3;
$y = 2;
echo $x % $y;
?>

A. 1.3
B. 1
C. 0
D. Error

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

<?php
$a = 1;
$b = 2;
$c = 3;
echo ($a % ($b) + $c);
?>

A. 2
B. 3
C. 4
D. 5

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

<?php
$a = 1;
$b = 2;
$c = 3;
echo ($a * (($b) - $c));
?>

A. 1
B. -1
C. 2
D. -2

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11. Variables are ________ for storing information.

A. decimal
B. storage
C. numbers
D. containers

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12. choose the incorrect variable name in php?

A. $_AGE
B. $18AGE
C. $AGE18
D. $_AGE18

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13. A variable declared _____ has a GLOBAL SCOPE?

A. outside program
B. inside function
C. outside function
D. None Of the Above

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14. A variable declared _____ has a LOCAL SCOPE?

A. outside program
B. inside function
C. outside function
D. None Of the Above

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15. Which of the following will be output of the following code?

<?php
function myTest() {
    static $x;
    echo $x;
}

myTest();

?> 

A. 0
B. 1
C. No Output
D. Error

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16. Which of the following is NOT a superglobal variable ?

A. $_SERVER
B. $_GLOBAL
C. $_GET
D. $_POST

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17. Predict the output of the following code snippet :

<?php
$i=10;
function sample($i)
{
          $i++;
          echo $i.",";
}
echo $i.",";
GLOBAL $i;
sample($i);
echo $i;
?>

A. 11,11,11
B. 10,11,11
C. 10,11,10
D. 10,10,10

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18. Predict the output of the following code snippet :

<?php
$i=10;
function sample($i)
{
    $i+=2;
    GLOBAL $i;
    echo $i+$i,",";
}
echo $i.",";
GLOBAL $i;
sample($i);
echo $i;
?>

A. 10,20,10
B. 10,24,10
C. 10,20,20
D. 10,22,10

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19. Predict the output of the following code snippet :

<?php
function sample()
	{
	$var1=20;
	echo $var1;
	echo $GLOBALS['var1'];
	}
$var1=10;
sample();
echo $var1;
?>

A. 201010
B. 202010
C. 101010
D. 201020

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20. what $_SERVER variable do?

A. Will give the information about all the predefined variables to know the server information
B. To get the information about the files uploaded using POST methods
C. When the information is passed using POST methods
D. None of the above

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