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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 12;
--$a;
echo $a++;

error
11
10
12

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
{
echo "$x";
}

5
0
Error
Nothing

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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
1
true
false

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

5
4
error
3

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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 + $j) > ($j - $k));

0
no output
1
error

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PHP Operators and Expressions
The result of below two statements will be:Round(2.5)Round(-2.5)

2, -2
2.5, -2
3, -3
3.5, -3.5

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