WordPress站点出现404错误时邮件通知管理员

几乎所有的网站都会出现404错误，也就是所访问的页面不存在。倡萌之前分享过几个 WordPress 404错误统计及重定向插件，今天主要分享下 WordPress站点出现404错误时自动发送邮件通知管理员的方法。

email-404-alert-wpdaxue_com

将下面的代码添加到你所用的WordPress主题的 404.php 文件的顶端即可：

&lt;?php // WP 404 ALERTS @ http://wp-mix.com/wordpress-404-email-alerts/
 
// set status
header(&quot;HTTP/1.1 404 Not Found&quot;);
header(&quot;Status: 404 Not Found&quot;);
 
// site info
$blog  = get_bloginfo('name');
$site  = get_bloginfo('url') . '/';
$email = get_bloginfo('admin_email');
 
// theme info
if (!empty($_COOKIE[&quot;nkthemeswitch&quot; . COOKIEHASH])) {
     $theme = clean($_COOKIE[&quot;nkthemeswitch&quot; . COOKIEHASH]);
} else {
     $theme_data = wp_get_theme();
     $theme = clean($theme_data-&gt;Name);
}
 
// referrer
if (isset($_SERVER['HTTP_REFERER'])) {
     $referer = clean($_SERVER['HTTP_REFERER']);
} else {
     $referer = &quot;undefined&quot;;
}
// request URI
if (isset($_SERVER['REQUEST_URI']) &amp;&amp; isset($_SERVER[&quot;HTTP_HOST&quot;])) {
     $request = clean('http://' . $_SERVER[&quot;HTTP_HOST&quot;] . $_SERVER[&quot;REQUEST_URI&quot;]);
} else {
     $request = &quot;undefined&quot;;
}
// query string
if (isset($_SERVER['QUERY_STRING'])) {
     $string = clean($_SERVER['QUERY_STRING']);
} else {
     $string = &quot;undefined&quot;;
}
// IP address
if (isset($_SERVER['REMOTE_ADDR'])) {
     $address = clean($_SERVER['REMOTE_ADDR']);
} else {
     $address = &quot;undefined&quot;;
}
// user agent
if (isset($_SERVER['HTTP_USER_AGENT'])) {
     $agent = clean($_SERVER['HTTP_USER_AGENT']);
} else {
     $agent = &quot;undefined&quot;;
}
// identity
if (isset($_SERVER['REMOTE_IDENT'])) {
     $remote = clean($_SERVER['REMOTE_IDENT']);
} else {
     $remote = &quot;undefined&quot;;
}
// log time
$time = clean(date(&quot;F jS Y, h:ia&quot;, time()));
 
// sanitize
function clean($string) {
     $string = rtrim($string); 
     $string = ltrim($string); 
     $string = htmlentities($string, ENT_QUOTES); 
     $string = str_replace(&quot;\n&quot;, &quot;&lt;br&gt;&quot;, $string);
 
     if (get_magic_quotes_gpc()) {
          $string = stripslashes($string);
     } 
     return $string;
}
 
$message = 
     &quot;TIME: &quot;            . $time    . &quot;\n&quot; . 
     &quot;*404: &quot;            . $request . &quot;\n&quot; . 
     &quot;SITE: &quot;            . $site    . &quot;\n&quot; . 
     &quot;THEME: &quot;           . $theme   . &quot;\n&quot; . 
     &quot;REFERRER: &quot;        . $referer . &quot;\n&quot; . 
     &quot;QUERY STRING: &quot;    . $string  . &quot;\n&quot; . 
     &quot;REMOTE ADDRESS: &quot;  . $address . &quot;\n&quot; . 
     &quot;REMOTE IDENTITY: &quot; . $remote  . &quot;\n&quot; . 
     &quot;USER AGENT: &quot;      . $agent   . &quot;\n\n\n&quot;;
 
wp_mail($email, &quot;404 Alert: &quot; . $blog . &quot; [&quot; . $theme . &quot;]&quot;, $message, &quot;From: $email&quot;); 
 
?&gt;

<?php // WP 404 ALERTS @ http://wp-mix.com/wordpress-404-email-alerts/ // set status header("HTTP/1.1 404 Not Found"); header("Status: 404 Not Found"); // site info $blog = get_bloginfo('name'); $site = get_bloginfo('url') . '/'; $email = get_bloginfo('admin_email'); // theme info if (!empty($_COOKIE["nkthemeswitch" . COOKIEHASH])) { $theme = clean($_COOKIE["nkthemeswitch" . COOKIEHASH]); } else { $theme_data = wp_get_theme(); $theme = clean($theme_data->Name); } // referrer if (isset($_SERVER['HTTP_REFERER'])) { $referer = clean($_SERVER['HTTP_REFERER']); } else { $referer = "undefined"; } // request URI if (isset($_SERVER['REQUEST_URI']) && isset($_SERVER["HTTP_HOST"])) { $request = clean('http://' . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]); } else { $request = "undefined"; } // query string if (isset($_SERVER['QUERY_STRING'])) { $string = clean($_SERVER['QUERY_STRING']); } else { $string = "undefined"; } // IP address if (isset($_SERVER['REMOTE_ADDR'])) { $address = clean($_SERVER['REMOTE_ADDR']); } else { $address = "undefined"; } // user agent if (isset($_SERVER['HTTP_USER_AGENT'])) { $agent = clean($_SERVER['HTTP_USER_AGENT']); } else { $agent = "undefined"; } // identity if (isset($_SERVER['REMOTE_IDENT'])) { $remote = clean($_SERVER['REMOTE_IDENT']); } else { $remote = "undefined"; } // log time $time = clean(date("F jS Y, h:ia", time())); // sanitize function clean($string) { $string = rtrim($string); $string = ltrim($string); $string = htmlentities($string, ENT_QUOTES); $string = str_replace("\n", "<br>", $string); if (get_magic_quotes_gpc()) { $string = stripslashes($string); } return $string; } $message = "TIME: " . $time . "\n" . "*404: " . $request . "\n" . "SITE: " . $site . "\n" . "THEME: " . $theme . "\n" . "REFERRER: " . $referer . "\n" . "QUERY STRING: " . $string . "\n" . "REMOTE ADDRESS: " . $address . "\n" . "REMOTE IDENTITY: " . $remote . "\n" . "USER AGENT: " . $agent . "\n\n\n"; wp_mail($email, "404 Alert: " . $blog . " [" . $theme . "]", $message, "From: $email"); ?>

如果你的主机支持mail()函数或者设置了SMTP发送邮件，总之就是能够发送邮件就行，一会去查看你设置的WordPress站点的管理员邮箱，你就会发现404通知邮件（可能在垃圾箱哦）,邮件内容如本文配图所示。

如果你不需要该功能，删除刚才添加的代码，或者注销代码最后的mail()函数：

// wp_mail($email, &quot;404 Alert: &quot; . $blog . &quot; [&quot; . $theme . &quot;]&quot;, $message, &quot;From: $email&quot;);

参考资料：http://wp-mix.com/wordpress-404-email-alerts/

来源：

https://www.wpdaxue.com/wordpress-404-email-alert.html

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