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

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

A). $my_var

B). $my-var

C). $my var

D). my_var

What is the value of $x after the following PHP code is executed?

<?php
$x = 5;
$x += 3;
echo $x;
?>

A). 5

B). 8

C). 15

D). 3

What is the correct way to declare a variable in PHP?

A). $name = 'John';

B). name = 'John';

C). var name = 'John';

D). String name = 'John';

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

What will be the result of the expression 'Hello' . ' World' in PHP?

A). 'Hello World'

B). 'Hello . World'

C). 'Hello + World'

D). 'Hello, World'

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

A). 0

B). 1

C). 3

D). 10

Which of the following PHP functions is used to convert a string to uppercase?

A). strtoupper()

B). ucwords()

C). strtolower()

D). ucfirst()

What does the following PHP code output?

<?php
$x = '10';
$y = 20;
echo $x + $y;
?>

A). 30

B). 1020

C). Error

D). 102

What will be the output of the following PHP code?

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

A). 10

B). 11

C). 9

D). Error

What data type is the variable $age = 25; in PHP?

A). Integer

B). String

C). Boolean

D). Float