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PHP Operators and Expressions

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

Nothing
0
Error
1

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PHP Operators and Expressions
What will be the output of the following PHP code ?
int $one = 1;
echo "$one";

Error
1
$one
0

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

Error
01
10
11

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PHP Operators and Expressions
What will be the output of the following PHP code ?
define("__LINE__", "PHP is a scripting language");
echo __LINE__;

PHP is a scripting language
ERROR
2
__LINE__

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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";

Hello
$one$two
HelloWorld
Error

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

red1
0
1
red 1

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