WordPress 对新用户注册有一个欢迎邮件，一般告知用户的用户名和密码，以及登录的地址；还有一封发给管理员的通知邮件，告诉管理员新用户的用户名和邮箱。这两封邮件的内容一般都比较简单，今天我们就一起来学习一下自定义这两个邮件。今天就为大家分享WordPress自定义新用户注册欢迎邮件教程。
首先，我们需要了解一下 WordPress 用来发送这两个邮件的函数：
<?php wp_new_user_notification( $user_id, $plaintext_pass ) ?>
默认的邮件代码如下：
// Redefine user notification function
if ( !function_exists(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_new_user_notification\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ) {
function wp_new_user_notification( $user_id, $plaintext_pass = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ) {
$user = new WP_User( $user_id );
$user_login = stripslashes( $user->user_login );
$user_email = stripslashes( $user->user_email );
$message = sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’New user registration on %s:\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blogname\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Username: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_login ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’E-mail: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_email ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
@wp_mail(
get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’admin_email\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’),
sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'[%s] New User Registration\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blogname\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ),
$message
);
if ( empty( $plaintext_pass ) )
return;
$message = __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Hi there,\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”Welcome to %s! Here\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s how to log in:\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”), get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blogname\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’)) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= wp_login_url() . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Username: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_login ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Password: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $plaintext_pass ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’If you have any problems, please contact me at %s.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’admin_email\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\r\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”;
$message .= __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Adios!\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’);
wp_mail(
$user_email,
sprintf( __(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'[%s] Your username and password\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blogname\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ),
$message
);
}
}
这个函数允许通过插件来覆盖，所以我们必须创建一个新插件来覆盖WP自带的邮件。下面是一个示例，在这个例子中，我们不仅修改邮件内容，而且让邮件支持发送 html 内容，这样就可以更加灵活地拓展邮件的展示效果啦！
<?php
/*
Plugin Name: WPDX New User Notification
Description:重新定义新用户注册邮件
Version: 1.0
*/
if ( !function_exists(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_new_user_notification\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) ) {
function wp_new_user_notification( $user_id, $plaintext_pass = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ ) {
$user = new WP_User($user_id);
//获取用户名和邮箱
$user_login = stripslashes($user->user_login);
$user_email = stripslashes($user->user_email);
//获取管理员邮箱和博客名称
$admin_email = stripslashes(get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’admin_email\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’));
$blog_name = wp_specialchars_decode(get_option(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’blogname\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), ENT_QUOTES);
//自定义管理员邮件
$headers = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’From: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.$blog_name.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ <\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.$admin_email.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’MIME-Version: 1.0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Content-type: text/html; charset=uft-8\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Content-Transfer-Encoding: 8bit\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<html><head><meta http-equiv=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”Content-Type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\” content=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”text/html; charset=utf-8\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”></head><body><div>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’你的网站[%s] 有新用户注册:\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $blog_name ) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Username: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_login) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’E-mail: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_email) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p></div></body></html>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
@wp_mail($admin_email, sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'[%s] New User Registration\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $blog_name), $message, $headers);
//判断新用户密码是否为空
if ( empty($plaintext_pass) )
return;
//自定义新用户欢迎邮件
$headers = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’From: \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.$blog_name.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ <\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.$admin_email.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’MIME-Version: 1.0\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Content-type: text/html; charset=uft-8\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$headers .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Content-Transfer-Encoding: 8bit\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message = \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<html><head><meta http-equiv=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”Content-Type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\” content=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”text/html; charset=utf-8\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”></head><body><div>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’亲爱的：\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’) .$user_login. \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>这是由大伟吉他教室（www.daweijita.com）发来的邮件。</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>恭喜您今天正式成为教室的一员，我们已经展开热情的怀抱欢迎你。这里有专业的吉他老师，多得好几年都学不完的教学，还有来天南地北的小伙伴。音乐的旅程即将开启，你准备好了么?</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>您的账号信息如下：</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Username: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $user_login) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’.sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’Password: %s\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $plaintext_pass) . \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>请妥善保存好自己的账户信息，如果您忘记密码，可以通过登录窗口的密码找回功能找回密码。</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p>加入我们的微信，可及时获取最新的教学内容！</p>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
$message .= \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'<p><img src=\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\”http://cdn.daweijita.com/2014/07/dwjt-wx.jpg\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\” /></p></div></body></html>\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
@wp_mail($user_email, sprintf(__(\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'[%s] Your username and password\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’), $blog_name), $message , $headers);
}
//让邮件支持html
add_filter( \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wp_mail_content_type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’, \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’wpdx_set_html_content_type\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’ );
function wpdx_set_html_content_type() {
return \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’text/html\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’;
}
}
1.新建一个名为 wpdx-new-user-notification 的PHP文件，复制上面的代码到该文件中，根据自己的实际需求修改代码内容，然后保存为 utf-8 无 BOM 编码格式。
2.新建一个名为 new-user-notification 的文件夹，将上面的 wpdx-new-user-notification.php 添加到里面，然后连同文件夹一起上传到 /wp-content/plugins/ 目录下
3.返回WP后台，已安装的插件中启用即可。
示例中的用户欢迎邮件的效果如下：