Library for importing from IMAP and parsing the message.

get_mail.php

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

/**
 * Get Mail
 *
 * IMAP library for CodeIgniter. Requires Datamapper (http://datamapper.wanwizard.eu/)
 *
 * @package      Get Mail
 * @author		Web Together (http://webtogether.ie)
 * @version		0.9
 * @license		MIT License Copyright (c) 2008 Erick Hartanto
 */

class Get_mail{

    private $_debug = false;
    private $_arrErrors = array();

    private $hostname = '{imap.gmail.com:993/imap/ssl/novalidate-cert}INBOX';
    private $username = 'username';
    private $password = 'password';

    private $archive = true;
    private $archive_folder = '[Gmail]/All Mail';

    private $inbox;

	public function __construct(){}

	/**
     * Destruct
     * 
     * Shows errors 
     */
    public function __destruct(){
        if($this->_debug && count($this->_arrErrors) > 0) {
            echo '<pre>'.print_r($this->_arrErrors, true).'</pre>';exit;
        }
    }
    
    /**
     * __get
     *
     * Allows models to access CI's loaded classes using the same
     * syntax as controllers.
     *
     * @param string
     * @access private
     */
    public function __get($key){
        $CI =& get_instance();
        return $CI->$key;
    }

    /**
     * connect
     *
     * Connects to the server with the given login details.
     * 
     * @return void
     */
    private function connect(){

        $this->inbox = imap_open($this->hostname, $this->username, $this->password) or die(imap_last_error());

    }

    /**
     * close
     *
     * Closes the IMAP connection.
     * 
     * @return void
     */
    private function close(){

        imap_close($this->inbox);

    }

    /**
     * Get Emails
     *
     * Grab the emails from the mailbox. Move them to the mail archive.
     * 
     * @return array
     */
    public function get_emails(){

        $this->connect();

        $emails = imap_search($this->inbox,'ALL');

        if($emails){

            $output = array();

            foreach($emails as $email_number){

                // get information specific to this email
                $overview = imap_fetch_overview($this->inbox, $email_number, 0);
                
                // get plaintext
                $message = imap_fetchbody($this->inbox, $email_number, '1');

                // if not plaintext get full message
                if(empty($message)) $message = imap_fetchbody($this->inbox, $email_number, '2');

                $output[] = array( 'overview' => $overview[0], 'message' => $this->parse_message($message), 'full_message' => $message );

                if($this->archive) imap_mail_move($this->inbox, $email_number, $this->archive_folder);

            }

            $this->close();
            return $output;

        }else{

            $this->close();
            return false;

        }

    }

    /**
     * Parse Message
     *
     * Try and get the actual reply from the email content
     * 
     * @param  string
     * @return string
     */
    public function parse_message($message){

        $array = preg_split("/(\r\n|\n|\r)/", $message);
        $message_array = array();

        if($this->_debug){
            echo '<pre>';
            print_r($array);
            echo '</pre>';
        }

        foreach($array as $item){

            if($item == '--' || $item == '-- ' || $item == '--  ' || $item == '-- \n' || $item == '--\n'){
                // Standard signature break identifier
                break;
            }elseif($this->starts_with($item, '-----Original Message-----')){
                // MS Outlook default
                break;
            }elseif($this->starts_with($item, '________________________________')){
                // 32 underscores, Outlook again
                break;
            }elseif($this->starts_with($item, 'On ') && $this->ends_with($item, ' wrote:')){
                // OS X Mail.app default
                break;
            }elseif($this->starts_with($item, 'From: ')){
                // failsafe four Outlook and some other reply formats
                break;
            }elseif($this->starts_with($item, 'Sent from my iPhone')){
                // iPhone
                break;
            }elseif($this->starts_with($item, 'Sent from my BlackBerry')){
                // Blackberry
                break;
            }else{
                $message_array[] = $item;
            }
        }

        if($this->_debug) echo implode('\n', $message_array);

        return implode('\n', $message_array);

    }

    /**
     * Starts With
     *
     * Checks to see if a string starts with another string
     * 
     * @param  string
     * @param  string
     * @return boolean
     */
    function starts_with($haystack, $needle){

        return !strncmp($haystack, $needle, strlen($needle));

    }

    /**
     * Ends With
     *
     * Checks to see if a string ends with another string
     * 
     * @param  string
     * @param  string
     * @return boolean
     */
    function ends_with($string, $test){

        $strlen = strlen($string);
        $testlen = strlen($test);

        if ($testlen > $strlen) return false;

        return substr_compare($string, $test, -$testlen) === 0;

    }

}