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PHP Operators and Expressions

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

Hello World
Error
Nothing
Missing semicolon error

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

0
Error
1
$one

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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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PHP Operators and Expressions
What will be the output of the following PHP code ?
$x = 3.5;
$y = 2;
$z = 2;
echo $x / $y / $z;

3.5
1.75
Error
0.875

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

GREETING
no output
$GREETING
PHP is a scripting language

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PHP Operators and Expressions
What will be the output of the following PHP code ?
define('IF', 42);
echo "IF: ", IF;

IF:42
ERROR
IF:
No output

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