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PHP Operators and Expressions

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

red
red red
error
nothing

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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
infinite loop
10
210

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 3;
print ++$var++;

5
error
4
3

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

Nothing
Error
1
0

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 0;
$var1 = ($var1 + 5)++;
echo $var1;

error
6
7
5

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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();

Error
012
Nothing
000

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