How to indent to not affect formatting of plain text emails?

[busboy]

if ($guideMemberNumber) {

$extraMessage = "Don't forget to login with your member number.";} 

When I indent the above code on my php age, it also indents the text when I send a simple email. Is there a way I can indent my code to keep things organized and NOT have it affect an email that is sent?

Thanks!

[wonshikee]

You can use single quotes and it won't format it. But it also means you have to manually put in the line breaks/tabs.