<?php

/*
* Export sent email addresses to a CSV file
*/

class Export_Sent_Emails_Addresses{

	private $username, $pass, $imap_path;

	function __construct( $username, $pass, $imap_path ){
		$this->username  = $username;
		$this->pass			 = $pass;
		$this->imap_path = $imap_path;
		$this->run();
	}

	protected function run(){

		set_time_limit(4000);

		$mbox     = imap_open($this->imap_path, $this->username, $this->pass);
		$emails   = imap_search($mbox,'ALL');

		if($emails) {

			rsort($emails);

			$email_dirs = array();
			foreach( $emails as $email_number ){
				$overview = imap_fetch_overview( $mbox, $email_number, 0 );
		    $email_dirs[] = $overview[0]->to;
			}

			$email_dirs = array_unique( $email_dirs );

			$this->export_to_csv( $email_dirs );

		}

		imap_close($mbox);

	}

	private function export_to_csv( $email_dirs ){

		$fileName = 'emails'.time().'.csv';

		header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
		header('Content-Description: File Transfer');
		header("Content-type: text/csv");
		header("Content-Disposition: attachment; filename={$fileName}");
		header("Expires: 0");
		header("Pragma: public");

		$fh = @fopen( 'php://output', 'w' );
		fputcsv($fh, $email_dirs);
		fclose($fh);
		exit;

	}

}

$exporter = new Export_Sent_Emails_Addresses(
	'test@test.com',
	'passwordhere',
	'{mail.test.com:143/novalidate-cert}Sent'
);
$exporter->run();

?>