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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 3, 4, 5, 6;
echo "$x";

6
Error
4
3

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$var1 = 1;
echo $var1 = ++$var1 % 2 + ++$var1;

2
0
3
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color1 = "red";
$color2 = "green";
echo "$color1" . "$color2";

red
red green
redgreen
green

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

Error
red
$color
red

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$color1 = "1";
$color2 = "1";
echo "$color1" + "$color2";

2
11
1
0

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = '4';
print + + $a;

no output
0
5
error

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