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PHP Operators and Expressions

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

11111213
11111112
11121213
11111212

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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;
}

no output
error at line2
4
2

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

red
red
$color
Error

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

Hello world
Nothing
Hello world in italics
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$one = 1;
print($one);
print $one;

11
10
Error
01

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

HelloWorld
Hello World
Hello
World

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