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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() {
$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 ?
$a = 'a';
print $a * 2;

error
2
0
192

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 0;
$j = 1;
$k = 2;
print !(($i + $k) < ($j - $k));

0
false
true
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "Hello";
$two = "World";
echo "$one$two";

Hello
$one$two
HelloWorld
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 4;
$y = -3;
$z = 11;
echo 4 + $y * $z / $x;

4.25
-3.25
3.25
-4.25

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 4;
$y = 3;
function fun($x = 3, $y = 4) {
$z = $x+$y/$y+$x;
echo "$z";
}
echo $x;
echo $y;
echo $z;
fun($x, $y);

943
439
43
349

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