I have two questions about the headers to mail PHP function
1) For the encoding, I would like to know whether to put guillement between the type of encoding or nothing put
"Content-Type: text/plain; charset=\\"utf-8\\"\\r\
"Content-Type: text/plain; charset=utf-8\\r\
2) It seems that the last line of the header need not contain the space character ("\
Is this true?