(PHP Extension) IMAP Read PEC Email of Aruba and Extract the Invoice XML Files

IMAP Read PEC Email of Aruba and Extract the Invoice XML Files.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux

<?php

include("chilkat.php");

$success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$imap = new CkImap();

// Connect using TLS.
$imap->put_Ssl(true);
$imap->put_Port(993);
$success = $imap->Connect('imap.example.com');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Authenticate
$success = $imap->Login('email_account_login','email_account_password');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Select an IMAP mailbox
$success = $imap->SelectMailbox('Inbox/postacert');
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// Search for messages having "POSTA CERTIFICATA: Invio File" in the subject.
$fetchUids = true;
$messageSet = new CkMessageSet();
$success = $imap->QueryMbx('SUBJECT \'POSTA CERTIFICATA: Invio File\'',$fetchUids,$messageSet);
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

if ($messageSet->get_Count() < 1) {
    print 'No messages found.' . "\n";
    exit;
}

// For our example, we'll process only the 1st email in the messageSet.
// Download the MIME source of the email into a StringBuilder object.
$email = new CkEmail();
$success = $imap->FetchEmail(false,$messageSet->GetId(0),$messageSet->get_HasUids(),$email);
if ($success == false) {
    print $imap->lastErrorText() . "\n";
    exit;
}

// The email should contain an attached email.
// The Invoice XML is contained within the attached email.
$attachedEmail = new CkEmail();
$success = $email->GetAttachedEmail(0,$attachedEmail);
if ($success == false) {
    print $email->lastErrorText() . "\n";
    exit;
}

// Get the MIME of the attached email..
$sbMime = new CkStringBuilder();
$success = $attachedEmail->GetMimeSb($sbMime);

// Load it into a Chilkat MIME object.
$mime = new CkMime();
$success = $mime->LoadMimeSb($sbMime);

// Examine the structure of the MIME.
print $mime->getStructure('text') . "\n";

// The MIME has this structure:
// multipart/mixed
//     application/octet-stream
//     application/octet-stream     <-- This is where the XML is contained.   It is within an opaque signature.
//     text/plain

// The 2nd application/octet-stream MIME header looks like this:

// ------=_Part_329673_-1348225228.1579889273592
// Content-Type: application/octet-stream; name="SM99999_99aaa.xml.p7m"
// Content-Transfer-Encoding: base64
// Content-Disposition: attachment; filename="SM99999_99aaa.xml.p7m"

// Let's get the binary content of the .p7m
$bdP7m = new CkBinData();
// Get the 2nd sub-part, at index 1 because index 0 is the 1st sub-part.

$mimeP7m = new CkMime();
$success = $mime->PartAt(1,$mimeP7m);
if ($success == false) {
    print $mime->lastErrorText() . "\n";
    exit;
}

if ($mime->get_LastMethodSuccess() != true) {
    print 'Failed to get 2nd sub-part. Perhaps the MIME does not have a 2nd sub-part?' . "\n";
    exit;
}

$success = $mimeP7m->GetBodyBd($bdP7m);

// Verify the signature, which also extracts the content contained within the opaque signature.
$crypt = new CkCrypt2();
$success = $crypt->OpaqueVerifyBd($bdP7m);
if ($success == false) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

// The bdP7m now contains the Invoice XML.
// Load it into an XML object.
$xml = new CkXml();
$success = $xml->LoadBd($bdP7m,true);

print $xml->getXml() . "\n";

// We have XML such as the following:
// 
// <?xml version="1.0" encoding="windows-1252"?>
// <?xml-stylesheet type="text/xsl" href="fatturapa_v1.2.xsl"?>
// <p:FatturaElettronica versione="FPR12" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" 
//     xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2" 
//     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
//     <FatturaElettronicaHeader>
// 	...
//     </FatturaElettronicaHeader>
//     <FatturaElettronicaBody>
// 	...
//     </FatturaElettronicaBody>
// </p:FatturaElettronica>

// Use this online tool to generate parsing code from sample XML: 
// Generate Parsing Code from XML

print 'success.' . "\n";

?>