Novice, please help!

[Barry2014]

<?PHP

$x="10"; //Variable

$y="7"; //Variable

 

echo("$x+$y = 17") // Output

?>

 

How do I get the correct answer to output without putting it in myself like how I did?

[Ch0cu3r]

Concatenate the answer

echo "$x+$y = " . ($x+$y); // Output

[Barry2014]

Thanks, I  use open brackets to start the string and it still work but what is best practice.

 

You - echo "$x+$y = " . ($x+$y); // Output

me - echo ("$x+$y = " . ($x+$y)); // Output

[Ch0cu3r]

The parenthesises are optional.

[Barry2014]

Ok thanks.