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PHP Operators and Expressions

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

Error
15
10
5

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x;
echo "$x";

Nothing
Error
0
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 3;
print ++$var++;

3
4
error
5

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 4;
$y = 3$z = 1;
$z = $z + $x + $y;
echo "$z";

1
$z
15
8

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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 BMW
My car is a Toyota
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 0;
$x = $i++;
$y = ++$i;
print $x;
print $y;

12
01
21
02

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