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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;
}

infinite loop
10
210
no output

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

hello world
error
nothing
echo hello world

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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
4.25
3.25
-3.25

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

red
redredred
redred
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
int $one = 1;
echo "$one";

0
$one
Error
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
class myObject { }
define('myObject::CONSTANT', 'test');
echo myObject::CONSTANT;

no output
myObject::CONSTANT
test
error

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