ARF/Bounce Processor

<?php
$notifyemail = "[email protected]";

$fd = fopen("php://stdin", "r");
$email = "";
while (!feof($fd)) {
    $email .= fread($fd, 1024);
}
fclose($fd);

$lines = explode("\n", $email);
$type = "";
$CampaignID = "";

foreach ($lines as $line) {
    $line = trim($line);
    if ($type == "ARF") {
        if (strstr("X-CampaignID:")) {
            $begin = strrpos($line, ":");
            $CampaignID = substr($line, $begin + 1);
            exit;
        }
    }else if ($type == "BOUNCE") {
        if ($CampaignID == "") {
            if (strstr("X-CampaignID:")) {
                $begin = strrpos($line, ":");
                $CampaignID = substr($line, $begin + 1);
            }
        }

        $bouncecodes = array(
            '5.0.0' => 'HARDBOUNCE',
            '5.1.0' => 'HARDBOUNCE',
            '5.1.1' => 'HARDBOUNCE',
            '5.1.2' => 'HARDBOUNCE',
            '5.1.3' => 'HARDBOUNCE',
            '5.1.4' => 'HARDBOUNCE',
            '5.1.5' => 'HARDBOUNCE',
            '5.1.6' => 'HARDBOUNCE',
            '5.1.7' => 'HARDBOUNCE',
            '5.1.8' => 'HARDBOUNCE',
            '5.2.0' => 'SOFTBOUNCE',
            '5.2.1' => 'SOFTBOUNCE',
            '5.2.2' => 'SOFTBOUNCE',
            '5.2.3' => 'HARDBOUNCE',
            '5.2.4' => 'HARDBOUNCE',
            '5.3.0' => 'HARDBOUNCE',
            '5.3.1' => 'SOFTBOUNCE',
            '5.3.2' => 'HARDBOUNCE',
            '5.3.3' => 'HARDBOUNCE',
            '5.3.4' => 'HARDBOUNCE',
            '5.4.0' => 'HARDBOUNCE',
            '5.4.1' => 'HARDBOUNCE',
            '5.4.2' => 'HARDBOUNCE',
            '5.4.3' => 'HARDBOUNCE',
            '5.4.4' => 'HARDBOUNCE',
            '5.4.5' => 'SOFTBOUNCE',
            '5.4.6' => 'HARDBOUNCE',
            '5.4.7' => 'HARDBOUNCE',
            '5.5.0' => 'HARDBOUNCE',
            '5.5.1' => 'HARDBOUNCE',
            '5.5.2' => 'HARDBOUNCE',
            '5.5.3' => 'SOFTBOUNCE',
            '5.5.4' => 'HARDBOUNCE',
            '5.5.5' => 'HARDBOUNCE',
            '5.6.0' => 'HARDBOUNCE',
            '5.6.1' => 'HARDBOUNCE',
            '5.6.2' => 'HARDBOUNCE',
            '5.6.3' => 'HARDBOUNCE',
            '5.6.4' => 'HARDBOUNCE',
            '5.6.5' => 'HARDBOUNCE',
            '5.7.0' => 'HARDBOUNCE',
            '5.7.1' => 'HARDBOUNCE',
            '5.7.2' => 'HARDBOUNCE',
            '5.7.3' => 'HARDBOUNCE',
            '5.7.4' => 'HARDBOUNCE',
            '5.7.5' => 'HARDBOUNCE',
            '5.7.6' => 'HARDBOUNCE',
            '5.7.7' => 'HARDBOUNCE',
            '9.1.1' => 'HARDBOUNCE',
        );

        foreach ($bouncecodes as $code => $btype) {
            if (strstr($code)) {
                $type = $btype;
                if ($CampaignID != "") {
                    exit;
                }
            }
        }
    }else if ($type == "HARDBOUNCE") {
        if (strstr("X-CampaignID:")) {
            $begin = strrpos($line, ":");
            $CampaignID = substr($line, $begin + 1);
            exit;
        }
    }else if ($type == "SOFTBOUNCE") {
        if (strstr("X-CampaignID:")) {
            $begin = strrpos($line, ":");
            $CampaignID = substr($line, $begin + 1);
            exit;
        }
    }else{
        if (strstr($line, "Content-Type: multipart/report; report-type=feedback-report;")) {
            $type = "ARF";
        }
        if (strstr($line, "X-Failed-Recipients")) {
            $type = "BOUNCE";
        }
    }
}

if ($type == "ARF" && $CampaignID != "") {
    //Unsubscribe
}else if ($type == "HARDBOUNCE" && $CampaignID != "") {
    //Unsubscribe
}else if ($type == "SOFTBOUNCE" && $CampaignID != "") {
    //Retry later or Unsubscribe if max softbounces has been reached
}else{
    //Does Not Compute - Backup plan, foward email for manual review
    mail($notifyemail, "System Notification", $email);
}
?>