hedera-web/rest/edi/clean.php

<?php

require_once __DIR__.'/lib/method.php';

class Clean extends Edi\Method {
	function ediRun($db) {
		$imap = $this->imap;

		$cleanPeriod = $db->getValue('SELECT clean_period FROM imap_config');

		$deleted = 0;
		$date = new DateTime(NULL);
		$date->sub(new DateInterval($cleanPeriod));
		$filter = sprintf('BEFORE "%s"', $date->format('D, j M Y'));

		$folders = [
			 $this->imapConf['success_folder']
			,$this->imapConf['error_folder']
		];

		foreach($folders as $folder)
		if (imap_reopen($imap, "{$this->mailbox}$folder")) {
			if ($messages = imap_search($imap, $filter)) {
				foreach($messages as $message)
					imap_delete($imap, $message);

				imap_expunge($imap);
				$count = count($messages);
				$deleted += $count;
			}
			else
				$count = 0;

			echo "$count mails deleted from $folder mailbox\n";
		}

		echo "Total $deleted mails deleted\n";

		echo "Deleting records from database\n";
		$db->query('DELETE FROM message WHERE created < #', [$date]);
		echo "Done\n";
	}
}