1. What will be the output of the following PHP code?
<?php
$a = 5;
$b = 5;
echo ($a === $b);
?>
a) 5 === 5
b) Error
c) 1
d) False
Explanation: === operator returns 1 if $a and $b are equivalent and $a and $b have the same type.
2. Which of the below symbols is a newline character?
a) \r
b) \n
c) /n
d) /r
Explanation: PHP treats \n as a newline character.
3. What will be the output of the following PHP code?
<?php
$num = 10;
echo 'What is her age? \n She is $num years old';
?>
a) What is her age? \n She is $num years old
b) What is her age?
She is $num years old
c) What is her age? She is 10 years old
d) What is her age?
She is 10 years old
Explanation: When a string is enclosed within single quotes both variables and escape sequences will not be interpreted when the string is parsed.
4. Which of the conditional statements is/are supported by PHP?
i) if statements
ii) if-else statements
iii) if-elseif statements
iv) switch statements
a) Only i)
b) i), ii) and iv)
c) ii), iii) and iv)
d) i), ii), iii) and iv)
Explanation: All are conditional statements supported by PHP as all are used to evaluate different conditions during a program and take decisions based on whether these conditions evaluate to true of false.
5. What will be the output of the following PHP code?
<?php
$team = "arsenal";
switch ($team) {
case "manu":
echo "I love man u";
case "arsenal":
echo "I love arsenal";
case "manc":
echo "I love manc"; }
?>
a) I love arsenal
b) Error
c) I love arsenalI love manc
d) I love arsenalI love mancI love manu
Explanation: If a break statement isn’t present, all subsequent case blocks will execute until a break statement is located.
6. Which of the looping statements is/are supported by PHP?
i) for loop
ii) while loop
iii) do-while loop
iv) foreach loop
a) i) and ii)
b) i), ii) and iii)
c) i), ii), iii) and iv)
d) Only iv)
Explanation: All are supported looping statements in PHP as they can repeat the same block of code a given number of times, or until a certain condition is met.
7. What will be the output of the following PHP code?
<?php
$user = array("Ashley", "Bale", "Shrek", "Blank");
for ($x=0; $x < count($user); $x++) {
if ($user[$x] == "Shrek") continue;
printf ($user[$x]);
}
?>
a) AshleyBale
b) AshleyBaleBlank
c) ShrekBlank
d) Shrek
Explanation: The continue statement causes execution of the current loop iteration to end and commence at the beginning of the next iteration.
8. If $a = 12 what will be returned when ($a == 12) ? 5 : 1 is executed?
a) 12
b) 1
c) Error
d) 5
Explanation: ?: is known as ternary operator. If condition is true then the part just after the ? is executed else the part after : .
9. What will be the value of $a and $b after the function call in the following PHP code?
<?php
function doSomething( &$arg ) {
$return = $arg;
$arg += 1;
return $return;
}
$a = 3;
$b = doSomething( $a );
?>
a) a is 3 and b is 4
b) a is 4 and b is 3
c) Both are 3
d) Both are 4
Explanation: $a is 4 and $b is 3. The former because $arg is passed by reference, the latter because the return value of the function is a copy of the initial value of the argument.
10. Who is the father of PHP?
a) Rasmus Lerdorf
b) Willam Makepiece
c) Drek Kolkevi
d) List Barely
Explanation: PHP was originally created by Rasmus Lerdorf in 1994