php:404 error trap and email to Administrator program _php Tutorial

# 404.php, 8/10/2000.
# Traps 404 Errors and mails a notice to the webmaster.
# Requires PHP 3.0 or newer, and mail capability on your system.
#
# Copyright Shaun@shat.net under the GNU public License.
# disclaimer:i wrote this script for me, and it works for me.
# If it doesnt work for you, or makes your server explode,
# thats life. Please email with questions or bug reports.

# Set These variables to configure the script:

# Set $domain to your domain name (no www)

$domain = "your.domain.com";

# Set $docroot to the URL of the directory which contains your
#. htaccess file. Dont include trailing Slash.

$docroot = "http://your.domain.com";

# Font face Youd-like-to-use on the 404 page

$fontface = "Verdana";

# Font size youd like-to-use on the 404 page

$fontsize = "2";

# Background color of the 404 page (default is white)

$bgcolor = "#ffffff";

# Text Color youd like-to-use on the 404 page (default is black)

$textcolor = "#000000";

# This script was capable of mailing the details of each 404 error
# to the webmaster. Use the $reportlevel variable-control when
# You receive these reports.
#
# 0 = dont use the e-mail capabilities at all
# 1 = Send email only if the errors Referer contains your domain name
# (i.e. the 404 is generated by a broken link on your site)
# 2 = Send email any time a 404 error was generated (useful for tracking
# broken links at other sites which link to you)

$reportlevel = 2;

# Set $emailaddress to the e-mail address of whoever should be
# Notified of 404 errors. Dont Escape the @ symbol. This would also
# be used as the ' from ' address on any emails the script generates.
# can leave this unassigned if youre not using email features.

$emailaddress = "you@your.domain.com";

################################################################
# DONT EDIT BELOW this line unless your KNOW what youre DOING #
################################################################
# If you want to edit the script, Ive commented profusely:) #
################################################################

# The Print_details function is what prints the 404 error to
# The visitor. As far as I know, PHP3 doesnt incorporate Perls
# print << "EOT" ability. PHP4 does allow this capability
# But the script is written for PHP3. So, you are
# A lot of echoes statements if you want to retain PHP3 compat.

function Print_details ()
{
# Request access to the global variables we need
Global $fontface, $fontsize, $docroot, $REQUEST _uri, $reportlevel;
Global $bgcolor, $textcolor

# Print the 404 error in Web format
echo "404 Not Found";
echo "";
echo "

404 Not Found

";
echo "

";
echo "were sorry. The page you requested, $docroot $request_uri, doesnt exist ";
echo "on the This server.

";

# If an e-mail report was being generated, let the visitor know:
if ($reportlevel! = 0)
{
echo "

";
echo "The details of this error has automatically been mailed to the webmaster.";
}

# Close up the HTML tags
# echo "";

Return
}

# The Send_email function sends the details of the 404 error to the
# Webmaster.

function Send_email ()
{
# Request access to the global variables we need
Global $REQUEST _uri, $HTTP _referer, $emailaddress, $REMOTE _addr, $docroot;

# Build The $errortime variable to contain the date/time of the error.
# Using date () likely would has been better, but I already had this code
# Elsewhere, and Im lazy.
$today = getdate ();
$month = $today [Mon];
$mday = $today [Mday];
$year = $today [year];
$hours = $today [hours];
$minutes = $today [minutes];
$errortime = "$month/$mday/$year at $hours: $minutes";

# Create The body of the email message
$message. = "404 error Reporta 404 error is encountered by $REMOTE _addr";
$message. = "on $errortime.";
$message. = "The URI which generated the error is: $docroot $request_uri";
$message. = "The referring page was: $HTTP _referer";

# Send the mail message. This assumes mail () would work on your system!
Mail ("$emailaddress", "404 Error Report", $message, "from: $emailaddress");

Return
}

# Done with function declarations. Main function begins here.

# Send a 404 error to the users browser
Print_details ();

# See whether or not we should send a email report. If so, do it.
if ($reportlevel! = 0)
if ($reportlevel = = 1) {
if (eregi ($domain, $HTTP _referer))
Send_email (); }
Else
Send_email ();

# all done!
Exit

?>

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