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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
< ? php < ? php echo "Hello world"; ? > ? >

Hello world
Nothing
Error
Hello

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color = red;
echo "$color" . red ;

nothing
error
red red
red

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 0x6db7;
print $a<<6;

1797568
no output
error
0x6dc0

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 0;
function fun() {
echo $GLOBALS['x'];
$x++;
}
fun();
fun();
fun();

012
Error
000
Nothing

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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;

10
5
15
Error

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

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