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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$i = 2;
while (++$i) {
while ($i --> 0)
print $i;
}

no output
210
10
infinite loop

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$on_e = 1;
$tw_o = 2;
$thre_e = 3;
$fou_r = 4;
echo $on_e / $tw_o + $thre_e / $fou_r;

1.25
0.75
0.05
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$y = 2;
$w = 4;
$y *= $w /= $y;
echo $y, $w;

42
82
44
80.5

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

0
Error
9
7

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

Hello world
Hello world in italics
Nothing
Error

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

red
Error
$color
red

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