Which of the following is a correct way to declare an array in PHP?

What is the purpose of the following PHP function?

strlen('Hello')

A). Returns the length of a string

B). Converts a string to lowercase

C). Checks if a string contains a substring

D). Returns the first occurrence of a substring in a string

What will be the output of the following PHP code?

<?php
$x = 5;
$y = 10;
echo 'The sum is: ' . ($x + $y);
?>

A). The sum is: 15

B). The sum is: 5 + 10

C). The sum is: $x + $y

D). The sum is: 510

What will be the output of the following PHP code?

<?php
$x = 5;
echo $x--;
echo $x;
?>

A). 5 4

B). 5 5

C). 4 4

D). 4 5

Which of the following PHP functions is used to find the length of an array?

A). count()

B). length()

C). size()

D). sizeof()

Which of the following is a valid variable name in PHP?

A). $my_var

B). $my-var

C). $my var

D). my_var

What will be the result of the expression 10 % 3 in PHP?

A). 0

B). 1

C). 3

D). 10

What is the purpose of the following PHP code?

<?php
$colors = array('Red', 'Green', 'Blue');
foreach ($colors as $color) {
echo $color . '
';
}
?>

A). To loop through an array and print each element

B). To check if a variable is an array

C). To reverse the elements of an array

D). To create a new array

Which of the following PHP operators is used for concatenation of strings?

A). .

B). +

C). &&

D). *

What will be the output of the following PHP code?

<?php
$name = 'John';
echo 'Hello, $name!';
?>

A). Hello, John!

B). Hello, $name!

C). Hello, !

D). Undefined variable: name

What will be the output of the following PHP code?

<?php
$x = 10;
echo ++$x;
?>

A). 10

B). 11

C). 9

D). Error