PHP Extension

Get the Size of a POP3 Message by UIDL

Demonstrates the Chilkat MailMan.GetSizeByUidl method, which returns the size, in bytes, of the email on the POP3 server identified by a UIDL. The size includes the full message content, including attachments, and the method returns -1 on error. This example looks up a message's size by its UIDL.

Background: A UIDL ("unique ID listing") is POP3's stable identifier for a message — it stays the same across sessions as long as the message remains in the mailbox. Checking a message's size before downloading lets a client skip or defer very large messages, enforce size limits, or show a progress estimate. You can obtain the available UIDLs from GetMailboxInfoXml or FetchUidls.

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PHP Extension

<?php

include("chilkat.php");

//  Demonstrates the MailMan.GetSizeByUidl method, which returns the size, in bytes, of the
//  email on the POP3 server identified by a UIDL.  The size includes the full message
//  content, including attachments.  Returns -1 on error.

$mailman = new CkMailMan();

//  Configure the POP3 server connection.
$mailman->put_MailHost('pop.example.com');
$mailman->put_MailPort(995);
$mailman->put_PopSsl(true);
$mailman->put_PopUsername('user@example.com');
$mailman->put_PopPassword('myPassword');

//  Get the size of a specific message by its UIDL.
$sizeBytes = $mailman->GetSizeByUidl('0000000123abcdef');
print 'Message size (bytes): ' . $sizeBytes . "\n";

//  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
//  connects and authenticates -- using the property settings above -- whenever a server
//  operation requires it.  Calling the explicit connect/authenticate methods can still be
//  helpful to determine whether a failure occurs while connecting or while authenticating.

?>