Which of the following PHP operators is used to compare whether two values are equal and of the same data type?

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

A). 0

B). 1

C). 3

D). 10

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 does the following PHP code output?

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

A). 30

B). 1020

C). Error

D). 102

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

A). $my_var

B). $my-var

C). $my var

D). my_var

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

A). .

B). +

C). &&

D). *

Which of the following statements is true about PHP comments?

A). Comments are ignored by the PHP interpreter

B). Comments can only be single-line

C). Comments must start with /* and end with */

D). Comments are displayed on the webpage

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;
echo $x--;
echo $x;
?>

A). 5 4

B). 5 5

C). 4 4

D). 4 5

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';

Which of the following is a correct way to assign a floating-point number to a variable in PHP?

A). $price = 10.99;

B). $price = '10.99';

C). $price = '10.99';

D). $price = 10;