我如何做一个简单的PHP电子邮件发送?

As stated in subject.

How do i do it? I'm doing it on Eclipse Galileo using php.

Would really appreciate the help.

Just like this:

mail('to@email.com', 'subject', 'message body');

See the php mail() documentation for more advanced usage.

You can use php mail function simply. But I would suggest you to use PHPMailer. PHPMailer library has lots of options. You can set attachment, message as text or html, bcc, cc, reply to very easily.