自动发邮件 使用了这个类http://bbs.php100.com/read-htm-tid-121431.html
因他用的php版本较老，用到了函数ereg_replace() 和 ereg()
解决方法
1ereg_replace() 函数，替换为 strtr() 函数
语法不同点如下：
详情http://www.php.net/manual/zh/function.ereg-replace.php
详情http://www.w3school.com.cn/php/func_string_strtr.asp
2ereg() 函数，替换为 preg_match() 函数
链接http://blog.163.com/yanli_xu/blog/static/1363672912011420101820393/
preg_match() 函数语法http://www.php.net/manual/zh/function.preg-match.php
修改完毕后，完整代码如下
【邮件类】sm.class.php
smtp( = "", = 25, = ,, ->debug = ->smtp_port = ->relay_host = ->time_out = 30; ->auth = ; ->user = ->pass = ->host_name = "localhost"; ->log_file = "" ->sock = sendmail(, , = "", = "", , = "", = "", = "" = ->get_address(->strip_comment( = (, "(^|(\r\n))(\.)", "\1.\3" .= "MIME-Version:1.0\r\n" (=="HTML" .= "Content-Type:text/html\r\n" .= "To: ".."\r\n" ( != "" .= "Cc: ".."\r\n" .= "From: .">\r\n" .= "Subject: ".."\r\n" .= .= "Date: ".("r")."\r\n" .= "X-Mailer:By Redhat (PHP/".().")\r\n" (, ) = (" ", .= "Message-ID: ("YmdHis", ).".".(*1000000).".".