1.
What will be the output of the following PHP code ?
<?php
"Hello World"
?>

2.
What will be the output of the following PHP code ?
<?php
print_r "Hello world"
?>

3.
What will be the output of the following PHP code ?
<?php
$color = "red";
echo "$color";
echo "$COLOR";
echo "$Color";
?>

4.
What will be the output of the following PHP code ?
<?php
 # echo "Hello world";
 echo "# Hello world"; 
?>

5.
What will be the output of the following PHP code ?
<?php
echo "Hello World"
?>

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