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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = "$winner";
$b = "/$looser";
echo $a,$b;

/$looser
$looser
/
$winner/$looser

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

Hello world# Hello world
Hello world
# Hello world
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$y = 2;
if (**$y == 4) {
echo $y;
}

4
2
error at line2
no output

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 5;
{
$x = 10;
echo "$x";
}
echo "$x";

error
1010
105
510

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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";

Error
red
redredred
redred

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

red green
0
1
redgreen

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