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PHP Operators and Expressions

PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "Hello";
$two = "World";
echo $one, $two;

Hello World
Hello
World
HelloWorld

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = "one";
$two = "two";
print($one$two);

nothing
one
onetwo
error

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

Error
Nothing
1
0

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

$z
15
10 + 5
$x + $y

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 10;
echo ++$a;
echo $a++;
echo $a;
echo ++$a;

11121213
11111112
11111212
11111213

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

Nothing
Error
5
0

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