\n don't skip to next line

I have a php file to send email.
I concat all string of the email into $m

But \n now print \n and no more add a line breakt.
What can i do to skip a line? It worked on PHP4 and no more on PHP5

$m = 'Hi,';
$m.= '\n';
$m.= 'Welcome to...';
Who is Participating?
LordOfPortsConnect With a Mentor Commented:
String within single quotes are interpreted literally, use double quotes to have \n interpreted as a new line, i.e.:

$m = 'Hi,';
$m.= "\n";
$m.= 'Welcome to...';

This article will have additional information that is useful http://us.php.net/manual/en/language.types.string.php#language.types.string.syntax.double
mammouthAuthor Commented:
Too fast :)
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