String Concatenation

Hello, Suppose $subject and $message have already string values that came from input forms. And is stored on $body. How can I add a new line between them? So when it is displayed under the body section of mail () of php it will be display like this

goat
this is the message

Codes:

$subject ='goat';
$message=' this is the message'
$body= $subject.$message <------how can I add a new line or break line on this code? Thanks

 

Just add a new line character in between, like so;

$body= $subject."\n".$message;

PHP:

 

Thanks for the help, it works.