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PHP Operators and Expressions

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

Nothing
Error
Hello world in italics
Hello world

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$hello = "Hello World";
$bye = "Bye";
echo $hello;
"$bye";

Hello worldBye
Error
Bye
Hello World

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

Hello World
Missing semicolon error
Error
Nothing

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = 12;
--$a;
echo $a++;

11
error
10
12

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

Hello
Hello world
Nothing
Error

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PHP Operators and Expressions
What will be the output of the following PHP code ?
$a = '12345';
echo 'qwe{$a}rty';

qwe12345rty
qwe{$a}rty
no output
error

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