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Original snippet by wp-mix.com at http://wp-mix.com/wordpress-404-email-alerts/ With the improved OOP style, implementation is a lot more straightforward, just add <?php new Clean_404_Email; to the top of your 404.php template.
<?php
// Just require() this class via your theme's functions.php file.
/* Then instantiate this at the top of your 404.php file with:
if ( class_exists( 'Clean_404_Email' ) )
new Clean_404_Email;
*/
class Clean_404_Email {
var $time, $request, $blog, $email, $theme, $theme_data, $site, $referer, $string, $address, $remote, $agent, $message;
function __construct() {
$this->headers();
$this->setup_vars();
$this->setup_email();
$this->send_mail();
}
function headers() {
echo header( "HTTP/1.1 404 Not Found" );
echo header( "Status: 404 Not Found" );
}
function setup_vars() {
$this->blog = get_bloginfo( 'name' );
$this->site = home_url( '/' );
$this->email = get_bloginfo( 'admin_email' );
// theme info
if ( ! empty( $_COOKIE["nkthemeswitch" . COOKIEHASH] ) ) {
$this->theme = $this->clean( $_COOKIE["nkthemeswitch" . COOKIEHASH] );
} else {
$this->theme_data = wp_get_theme();
$this->theme = $this->clean( $this->theme_data->Name );
}
// referrer
$this->referer = isset( $_SERVER['HTTP_REFERER'] ) ? $this->clean( $_SERVER['HTTP_REFERER'] ) : 'undefined';
// request URI
$this->request = isset( $_SERVER['REQUEST_URI'] ) && isset( $_SERVER['HTTP_HOST'] ) ? $this->clean( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ) : 'undefined';
// query string
$this->string = isset( $_SERVER['QUERY_STRING'] ) ? $this->clean( $_SERVER['QUERY_STRING'] ) : 'undefined';
// IP address
$this->address = isset( $_SERVER['REMOTE_ADDR'] ) ? $this->clean( $_SERVER['REMOTE_ADDR'] ) : 'undefined';
// user agent
$this->agent = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $this->clean( $_SERVER['HTTP_USER_AGENT'] ) : 'undefined';
// identity
$this->remote = isset( $_SERVER['REMOTE_IDENT'] ) ? $this->clean( $_SERVER['REMOTE_IDENT'] ) : 'undefined';
// log time
$this->time = $this->clean( date( "F jS Y, h:ia", time() ) );
}
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;
}
function setup_email() {
$this->message = '
<html><body>
<table width="70%" border="1" style="border-color: #777;" cellpadding="10">
<colgroup width="25%" style="text-align:right;" />
<colgroup id="colgroup" class="colgroup" width="1*" valign="middle" span="2" align="center" />
<thead>
<tr>
<th scope="col">Element</th>
<th scope="col">Data</th>
</tr>
</thead>
<tfoot>
<tr>
<td>User Agent</td>
<td>' . $this->agent . '</td>
</tr>
</tfoot>
<tbody>
<tr>
<td>Date/Time</td>
<td>' . $this->time . '</td>
</tr>
<tr>
<td>404 URL</td>
<td>' . $this->request . '</td>
</tr>
<tr>
<td>Site</td>
<td>' . $this->site . '</td>
</tr>
<tr>
<td>Theme</td>
<td>' . $this->theme . '</td>
</tr>
<tr>
<td>Referer</td>
<td>' . $this->referer . '</td>
</tr>
<tr>
<td>Query String</td>
<td>' . $this->string . '</td>
</tr>
<tr>
<td>Remote Address</td>
<td>' . $this->address . '</td>
</tr>
<tr>
<td>Remote Identity</td>
<td>' . $this->remote . '</td>
</tr>
</tbody>
</table>
</body></html>';
}
function email_headers() {
return sprintf( 'From: %s' . "\r\n" . 'MIME-Version: 1.0' . "\r\n" . 'Content-Type: text/html; charset=ISO-8859-1' . "\r\n", $this->email );
}
function send_mail() {
mail( $this->email, sprintf( '404 Alert: %1$s [ %2$s ]', $this->blog, $this->theme ), $this->message, sprintf( 'From: %s', $this->email_headers() ) );
}
} // Clean_404_Email
@DrewAPicture
Owner

Added a not-completely-awful HTML table for the email: http://cl.ly/image/0G2Q0N0K3y1k

@mustcomunicacion

Hi Drew,

i've pasted your code on my "404.php" file, placed on my child theme. But i'm not getting the email. I'm sure the 404 archive loaded is the one on my child folder, cause i've translated it to spanish. So my question is...
Do i have to change any code line to make it work? email or something? i'm the admin, so i didn't change anything at first, then i've changed 'admin_email' on line 27 with my actual email without results.

This article says i have to change some lines, even thought the code is not exactly the same.

Sorry i'm a beginner

@jacassidy

@DrewAPicture

Thanks for creating this.

In your instruction above, you say to just add <?php new Clean_404_Email; to the top of your 404.php template.

But then in the clean_404_emails.php, you say to require() this class via your theme’s functions.php file.

Would you give an example of what code to put in the functions.php file? I’m not clear on what that would be.

Thanks,
Jacob

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