PHP Import Mailbox using IMAP

config.php

<?php

$sourceServer = "{mail.mtlmaroc.com:993/imap/ssl}"; // ISP Mailserver Example (Menara.ma)
$destinationServer = "{ssl0.ovh.net:993/imap/ssl}"; // OVH Mailserver


// A list of folders that will be skipped.
// NOTE - If a parent folder is listed, all children folders are skipped too
$folders_skip = array(
    "Protected", 
    "Calendar", 
    "Contacts",  
    "Notes", 
    "Journal", 
    "Tasks", 
    "Spam",
    "Junk",
    "Public Folders");


?>

functions.php

<?php
function imap_list_source_mailboxes($server, $user, $pwd) {
	global $folders_skip;
	
	// Get list of mailboxes from src_server for $username
	$mailbox = @imap_open($server, $user, $pwd);
	$list = @imap_list($mailbox, $server,"*");
	
	if (is_array($list)) {
		reset($list);
	} else {
		$error = "source server <code>imap_list</code> failed: <code>". imap_last_error()."</code>\n";
		return $error;
	}

	while (list($key, $val) = each($list)) {
		$mailbox = @imap_utf7_decode($val);
		$fullmailbox = $mailbox;
		$mailbox = str_replace($server, "", $mailbox);

		// Skip UNIX hidden files
		if (preg_match("^\.", $mailbox)) {
			continue;
		}
		  
		if (!in_array(str_replace("INBOX.", "", $mailbox), $folders_skip)) {
			$count = @imap_open($server . $mailbox, $user, $pwd);
			$mbArray[] = array('mailbox' => $mailbox, 'messages' => @imap_num_msg($count));
			@imap_close($countä);
		}
	}

	@imap_close($sourceMailbox);
	return $mbArray;
}


function imap_mailbox_exists($connection, $server, $mailbox) {
	$mailboxes = @imap_list($connection, $server, $mailbox);

	if (empty($mailboxes)) {
		return false;
	} else {
		return true;
	}
}


function imap_mailbox_create($connection, $server, $mailbox) {
	if( @imap_createmailbox($connection, imap_utf7_encode($server . $mailbox))) {
		return true;
	} else {
		return false;
	}
}


// check destination-user check
function destinationUserCheck() {
	global $destinationUser, $sourceUser; 

	if ($destinationUser=="") {
		$destinationUser = $sourceUser;
	}

	return $destinationUser;
}


// check destination-pwd check
function destinationPwdCheck() {
	global $destinationPwd, $sourcePwd;

	if ($destinationPwd=="") {
		$destinationPwd = $sourcePwd;
	}

	return $destinationPwd;
}



/*
 * parses a given byte count
 *
 * thanks drupal!
 */
function parse_size($size) {
  $unit = preg_replace('/[^bkmgtpezy]/i', '', $size); // Remove the non-unit characters from the size.
  $size = preg_replace('/[^0-9\.]/', '', $size); // Remove the non-numeric characters from the size.
  if ($unit) {
    // Find the position of the unit in the ordered string which is the power of magnitude to multiply a kilobyte by.
    return round($size * pow(1024, stripos('bkmgtpezy', $unit[0])));
  }
  else {
    return round($size);
  }
}
?>

imap_importer.ohp

<?php
require("./config.php");
require("./functions.php");

$data = file_get_contents("data.csv");
$lines = explode("\n", $data);

foreach($lines as $line) {

if(empty($line)) break;

// Getting each user
$user = explode("~",$line);

$sourceUser = $user[1];
$sourcePwd = $user[2];
$destinationUser = $user[3];
$destinationPwd = $user[4];

echo $sourceUser." >> ".$destinationUser." >> ";

$destinationUser = destinationUserCheck();
$destinationPwd = destinationPwdCheck();

$mailbox = "Inbox";

// Open sourceServer and mailbox
$sourceMailbox = @imap_open($sourceServer, $sourceUser, $sourcePwd);
	 if(imap_last_error()) {
		echo "SourceError: ".imap_last_error()."\n";
		continue;
	}

// Open destinationServer, choose no mailbox
$destinationMailbox = @imap_open($destinationServer, $destinationUser, $destinationPwd);
	 if(imap_last_error()) {
		echo "DestinationError: ".imap_last_error()."\n";
		continue;
	}

// check if mailbox exists
$mailbox_exists = imap_mailbox_exists($destinationMailbox, $destinationServer, $mailbox);
$destinationMailbox = @imap_open($destinationServer . $mailbox, $destinationUser, $destinationPwd);

$sourceMailsStatus = imap_check($sourceMailbox);

for ($i=1; $i<=$sourceMailsStatus->Nmsgs; $i++) {
	$soureMail = imap_fetchheader($sourceMailbox, $i) . "\r" . imap_body($sourceMailbox, $i, FT_PEEK);
	imap_append($destinationMailbox, $destinationServer . $mailbox, $soureMail);
	$messageInfo = imap_headerinfo($sourceMailbox, $i);
}

echo $sourceMailsStatus->Nmsgs . "\n";

imap_close($sourceMailbox);
imap_close($destinationMailbox);

}

?>