php代码
<?php // 收件人邮箱地址 $to = 'xxxxxx@qq.com'; // 邮件主题 $title = '测试邮件发送'; // 邮件内容 $msg = '这是一封测试邮件'; // 发件人邮箱(虚拟的，本身发送的时候并不是用这个邮箱) $from = 'From: xxxxxxx@qq.com'; $flag = mail($to, $title, $msg, $from); // 打印结果,如果不加var_dump会有空值转换，即null转成‘’ echo var_dump($flag); ?>
http://www.w3school.com.cn/php/php_ref_mail.asp
在w3cschool里面对这块有些介绍，但没办法直接用，有问题。
淡蓝这里只介绍xampp集成安装的情况，其实都是一样的，自己再去下载一个sendmail也可以，这边xampp已经下载好了
修改一下配置，一共2个配置文件。
在xampp安装目录下
php/php.ini
[mail function] ; XAMPP: Comment out this if you want to work with an SMTP Server like Mercury SMTP = smtp.163.com smtp_port = 25 ; For Win32 only. ; http://php.net/sendmail-from sendmail_from = 13514087953@163.com ; XAMPP IMPORTANT NOTE (1): If XAMPP is installed in a base directory with spaces (e.g. c:program filesF:xampp) fakemail and mailtodisk do not work correctly. ; XAMPP IMPORTANT NOTE (2): In this case please copy the sendmail or mailtodisk folder in your root folder (e.g. C:sendmail) and use this for sendmail_path. ; XAMPP: Comment out this if you want to work with fakemail for forwarding to your mailbox (sendmail.exe in the sendmail folder) sendmail_path ="F:xamppsendmailsendmail.exe -t" ; XAMPP: Comment out this if you want to work with mailToDisk, It writes all mails in the F:xamppmailoutput folder ;sendmail_path="F:xamppmailtodiskmailtodisk.exe" ; Force the addition of the specified parameters to be passed as extra parameters ; to the sendmail binary. These parameters will always replace the value of ; the 5th parameter to mail(), even in safe mode. ;mail.force_extra_parameters = ; Add X-PHP-Originating-Script: that will include uid of the script followed by the filename mail.add_x_header=Off ; Log all mail() calls including the full path of the script, line #, to address and headers ;mail.log = "F:xamppphplogsphp_mail.log"
主要改这三个配置，这边淡蓝用的是163的smtp服务器，sendmail_path 等于指定一个用来发送邮件的客户端，这里xampp集成了sendmail，也在安装目录下
;用来发邮件的插件 sendmail_path ="F:xamppsendmailsendmail.exe -t"
然后修改sendmail目录下的sendmail.ini
[sendmail] ; you must change mail.mydomain.com to your smtp server, ; or to IIS's "pickup" directory. (generally C:InetpubmailrootPickup) ; emails delivered via IIS's pickup directory cause sendmail to ; run quicker, but you won't get error messages back to the calling ; application. smtp_server=smtp.163.com ; smtp port (normally 25) smtp_port=25 ; SMTPS (SSL) support ; auto = use SSL for port 465, otherwise try to use TLS ; ssl = alway use SSL ; tls = always use TLS ; none = never try to use SSL smtp_ssl=auto ; the default domain for this server will be read from the registry ; this will be appended to email addresses when one isn't provided ; if you want to override the value in the registry, uncomment and modify ;default_domain=mydomain.com ; log smtp errors to error.log (defaults to same directory as sendmail.exe) ; uncomment to enable logging error_logfile=error.log debug_logfile=debug.log ; create debug log as debug.log (defaults to same directory as sendmail.exe) ; uncomment to enable debugging ;debug_logfile=debug.log ; if your smtp server requires authentication, modify the following two lines auth_username=13514087953 auth_password=224119 ; if your smtp server uses pop3 before smtp authentication, modify the ; following three lines. do not enable unless it is required. pop3_server= pop3_username= pop3_password= ; force the sender to always be the following email address ; this will only affect the "MAIL FROM" command, it won't modify ; the "From: " header of the message content force_sender=13514087953@163.com ; force the sender to always be the following email address ; this will only affect the "RCTP TO" command, it won't modify ; the "To: " header of the message content force_recipient= ; sendmail will use your hostname and your default_domain in the ehlo/helo ; smtp greeting. you can manually set the ehlo/helo name if required hostname=
主要修改（其实有些重复的在php.inf文件中就可以不用设置也可以）
;smtp服务器 smtp_server=smtp.163.com ;端口 smtp_port=25 ;发件人邮箱名 auth_username=13514087953 ;密码 auth_password=224119 ;发件人邮箱地址 force_sender=13514087953@163.com
用开头的php代码测试一下即可，可以直接在ide中运行