PHP MCQ – Multiple Choice Questions and Answers – Basics – Part 3
This collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on “PHP basic”.
1. Which of the following statement will output $a on the screen?
A echo "\$a";
B echo "$$a";
C echo "/$a";
D echo "$a;";
A
A backslash ‘\’ is used in order to make the dollar sign as a normal string character rather than prompt PHP to treat $a as a variable. The backslash ‘\’ used in this way is known as escape character.
2. What is the result of the following PHP code?
<?php
$total = "10 persons";
$plus = 5;
$total = $total + $plus;
echo "$total";
?>
A 15
B Error
C 15 persons
D 10 persons
A
The integer value at the beginning of “10 persons” is used in the calculation. Despite that if it begins with anything but a numerical value, the value will be 0.
3. If $x = 10 what will be returned when ($x == 10) ? 2 : 4 is executed?
A 10
B 2
C 4
D Error
B
?: is known as ternary operator. If condition is true then the section just after the ? is executed else the section after : .
4. What is the result of the following PHP code?
<?php
$name = "Emily";
echo 'What is her name? \n She is $name';
?>
A
What is her name? \n She is $name
B
What is her name? She is $name
C
What is her name? She is Emily
D
What is her name? She is Emily
A
When a string is surrounded within single quotes both variables and escape sequences will not be interpreted when the string is parsed.
5. What is the result of the following PHP code?
<?php
$name = "Alex";
switch ($name)
{
case "Emily":
echo "Hello Emily. Welcome to StackHowTo!";
case "Alex":
echo "Hello Alex. Welcome to StackHowTo!";
case "Bob":
echo "Hello Bob. Welcome to StackHowTo!";
}
?>
A Hello Bob. Welcome to StackHowTo!
B Hello Alex. Welcome to StackHowTo!
C Hello Alex. Welcome to StackHowTo!Hello Bob. Welcome to StackHowTo!
D Error
C
If a break declaration isn’t present, all next case blocks will execute until a break declaration is found.
6. Which statements will output “Welcome to StackHowTo!” on the screen?
A echo(“Welcome to StackHowTo!”);
B print(“Welcome to StackHowTo!”);
C printf(“Welcome to StackHowTo!”);
D sprintf(“Welcome to StackHowTo!”);
A, B, C
echo(), print() and printf() all can be applied to display a statement over the screen. The sprintf() statement is functionally same to printf() except that the result is assigned to a string instead of rendered to the browser.
7. What is the result of the following PHP code?
<?php
$n = 1234;
$arr = (array) $n;
echo $arr[0];
?>
A 2
B 1
C Error
D 1234
D
The cast operator (array) is used to convert values from other data types to array.
8. What is the result of the following PHP code?
<?php
$tmp = 'Alex';
$name = &$tmp;
$name = "My name is $name";
echo $name;
echo $tmp;
?>
A ERROR
B My name is Alex Alex
C My name is AlexMy name is Alex
D My name is Alex
C
The
$name = &$tmp; line will reference $tmp via $name.
9. What is the result of the following PHP code?
<?php
$str = "Stack";
$str .= "How";
$str .= "To";
echo "$str";
?>
A Stack
B How
C To
D StackHowTo
D
‘.’ is a concatenation operator. $str .= “How” is same as $str = $str.”How” where $str is having value of “Stack” in the previous statement and “To” in the next statement. So the result will be “StackHowTo”.
10. What is the result of the following PHP code?
<?php
function countDown()
{
static $count = 10;
$count--;
echo $count;
}
countDown();
countDown();
countDown();
?>
A 1098
B 987
C 789
D 101010
B
Because $count is static, it keeps its previous value each time the function is called.
- PHP MCQ – Multiple Choice Questions and Answers – Basics – Part 1
- PHP MCQ – Multiple Choice Questions and Answers – Basics – Part 2
- PHP MCQ – Multiple Choice Questions and Answers – Basics – Part 3
- PHP Questions and Answers – Functions – Part 1
- PHP Questions and Answers – Functions – Part 2
- PHP Questions and Answers – Arrays – Part 1
- PHP Questions and Answers – Arrays – Part 2
- PHP Questions and Answers – Arrays – Part 3
- PHP Questions and Answers – Arrays – Part 4
- PHP Questions and Answers – Object-Oriented OOP – Part 1
- PHP Questions and Answers – Object-Oriented OOP – Part 2
- PHP Questions and Answers – Object-Oriented OOP – Part 3
- PHP Questions and Answers – String – Part 1
- PHP Questions and Answers – String – Part 2
- PHP Questions and Answers – Regular Expressions
- PHP Questions and Answers – Exception Handling
