从本地主机发送邮件与PHP与MAMP

我一直在尝试在网路上找到的所有东西，而且似乎都没有工作，所以我做错了，我需要一些帮助，弄清楚什么。

I've been trying everything I can find on the internet for this, and none of them seem to be working, so I'm doing something wrong and I need some help figuring out what.

[mail function]
; For Win32 only.
SMTP = localhost
smtp_port = 25

; For Win32 only.
sendmail_from = myemail@yahoo.com

; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
sendmail_path = /usr/sbin/sendmail -t -i -f myemail@yahoo.com

上面的代码是我已经改变了一切，（除了电子邮件是我的实际电子邮件（我也不确定如果雅虎电子邮件将与这个或否，这可能是这个问题））
我不知道sendmail_path在哪里，我找不到那条路径（我想下载一些名为sendmail的文件/程序？）

The above code is what I have changed everything to, (except for the email is my actual email (also I'm not sure if yahoo email will work with this or not, so maybe that's the problem?)) I am not sure where the sendmail_path goes to, I cannot find that path anywhere (am I suppose to download some file/program called sendmail?)

还有，我的APACHE端口我已经改为80，我的MySQL端口是3306（我不知道这些端口是否与smpt_port有关）

also, my APACHE port I have changed to 80, and my MySQL port is 3306, (I don't know if those ports have anything to do with the smpt_port or not)

任何帮助非常感谢，谢谢！

Any help would be greatly appreciated, thanks!

（如果有其他方法，（更容易的方式）这样做，请让我知道）。

(if there are any other ways, (easier ways) of doing this, please also let me know).