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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
print_r "Hello world"

Nothing
Hello World
Missing semicolon error
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$auth = 1;
$status = 1;
if ($result = (($auth == 1) && ($status != 0))) {
print "result is $result";
}

error
no output
result is true
result is 1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
$y = 10;
function fun() {
$y = $GLOBALS['x'] + $GLOBALS['y'];
}
fun();
echo $y;

Error
10
15
5

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$cars = array("Volvo", "BMW", "Toyota");
print $cars[2];

Error
Volvo
Toyota
BMW

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 3, 4, 5, 6;
echo "$x";

3
6
Error
4

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$cars = array("Volvo", "BMW", "Toyota");
echo "My car is a {$cars[0]}";

My car is a Volvo
My car is a Toyota
My car is a BMW
Error

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