<?php
$x = '10';
$y = 20;
echo $x + $y;
?>
30, as $x will be converted to the integer 10, and then added to $y, resulting in 30.
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
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 is a correct way to increment the value of a variable $count by 1 in PHP?
A). $count++;
B). $count += 1;
C). $count = $count + 1;
D). $count =+ 1;
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 output of the following PHP code?<?php
$x = 10;
echo ++$x;
?>
A). 10
B). 11
C). 9
D). Error
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
$x = 5;
echo $x--;
echo $x;
?>
A). 5 4
B). 5 5
C). 4 4
D). 4 5
Which of the following is a correct way to declare an array in PHP?
A). $colors = array('Red', 'Green', 'Blue');
B). $colors = 'Red, Green, Blue';
C). $colors = {'Red', 'Green', 'Blue'};
D). $colors = [Red, Green, Blue];
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 is the correct way to declare a variable in PHP?
A). $name = 'John';
B). name = 'John';
C). var name = 'John';
D). String name = 'John';