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PHP Operators and Expressions

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

Hello world
# Hello world
Hello world# Hello world
Error

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

Nothing
Hello world
Hello
Error

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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
BMW
Toyota

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PHP Operators and Expressions
What will be the output of the following PHP code ?
echo $x-- != ++$x;

error
no output
0
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 1;
$b = 3;
$d = $a++ + ++$b;
echo $d;

3
5
4
error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 10;
$j = 0;
if ($i || ($j = $i + 10)) {
echo "true";
}
echo $j;

0
20
true20
true0

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