hello, i have been trying to get a newline in an email, i have tried '\r\n' and i have also tried \n\n, i dont know where i am getting it wrong, and also i included a transaction amount ($tranx_amt) in the email, and it is coming up with 4 decimal places. the markup is below.

$body = " Hello $cust_id\r\n";
$body .= "We are happy to inform you that your order has been placed,\n\n Thanks for the making the payment of $tranx_amt ,\n\nYour Payment reference no is $orderno";.

this is the header (the email also contains tables in the body thats why the html type is in the heading)

PHP Code:
 $headers "From: donotreply@reacheasy.co.uk\r\n"
'MIME-Version: 1.0' "\r\n"
'Content-type: text/html; charset=iso-8859-1' "\r\n"
'Bcc:notification@grant.co.uk' "\r\n"
any ideas on the new line and the decimal places.