几年前我做了一个完整的课程，当我需要从电子邮件中获取内容时，我仍在使用它。它将帮助您以可读格式获取所有电子邮件正文（有时您有 html 和纯文本），并获取所有附件，准备好保存在某个地方或发送给网站用户。
它没有真正优化，所以在一个大邮箱上你可能会遇到麻烦；但是这个类的目的是访问可读格式的电子邮件，将它们放在网站的小部件上。我让您使用下面的示例来了解它是如何工作的。
ImapReader.class.php这是源代码。
<?php
class ImapReader
{
private $host;
private $port;
private $user;
private $pass;
private $box;
private $box_list;
private $errors;
private $connected;
private $list;
private $deleted;
const FROM = 0;
const TO = 1;
const REPLY_TO = 2;
const SUBJECT = 3;
const CONTENT = 4;
const ATTACHMENT = 5;
public function __construct($host = null, $port = '143', $user = null, $pass = null)
{
$this->host = $host;
$this->port = $port;
$this->user = $user;
$this->pass = $pass;
$this->box = null;
$this->box_list = null;
$this->errors = array ();
$this->connected = false;
$this->list = null;
$this->deleted = false;
}
public function __destruct()
{
if ($this->isConnected())
{
$this->disconnect();
}
}
public function changeServer($host = null, $port = '143', $user = null, $pass = null)
{
if ($this->isConnected())
{
$this->disconnect();
}
$this->host = $host;
$this->port = $port;
$this->user = $user;
$this->pass = $pass;
$this->box_list = null;
$this->errors = array ();
$this->list = null;
return $this;
}
public function canConnect()
{
return (($this->connected == false) && (is_string($this->host)) && (!empty($this->host))
&& (is_numeric($this->port)) && ($this->port >= 1) && ($this->port <= 65535)
&& (is_string($this->user)) && (!empty($this->user)) && (is_string($this->pass)) && (!empty($this->pass)));
}
public function connect()
{
if ($this->canConnect())
{
$this->box = @imap_open("{{$this->host}:{$this->port}/imap/ssl/novalidate-cert}INBOX", $this->user,
$this->pass);
if ($this->box !== false)
{
$this->_connected();
}
else
{
$this->errors = array_merge($this->errors, imap_errors());
}
}
return $this;
}
public function boxList()
{
if (is_null($this->box_list))
{
$list = imap_getsubscribed($this->box, "{{$this->host}:{$this->port}}", "*");
$this->box_list = array ();
foreach ($list as $box)
{
$this->box_list[] = $box->name;
}
}
return $this->box_list;
}
public function fetchAllHeaders($mbox)
{
if ($this->isConnected())
{
$test = imap_reopen($this->box, "{$mbox}");
if (!$test)
{
return false;
}
$num_msgs = imap_num_msg($this->box);
$this->list = array ();
for ($id = 1; ($id <= $num_msgs); $id++)
{
$this->list[] = $this->_fetchHeader($mbox, $id);
}
return true;
}
return false;
}
public function fetchSearchHeaders($mbox, $criteria)
{
if ($this->isConnected())
{
$test = imap_reopen($this->box, "{$mbox}");
if (!$test)
{
return false;
}
$msgs = imap_search($this->box, $criteria);
if ($msgs)
{
foreach ($msgs as $id)
{
$this->list[] = $this->_fetchHeader($mbox, $id);
}
}
return true;
}
return false;
}
public function isConnected()
{
return $this->connected;
}
public function disconnect()
{
if ($this->connected)
{
if ($this->deleted)
{
imap_expunge($this->box);
$this->deleted = false;
}
imap_close($this->box);
$this->connected = false;
$this->box = null;
}
return $this;
}
/**
* Took from khigashi dot oang at gmail dot com at php.net
* with replacement of ereg family functions by preg's ones.
*
* @param string $str
* @return string
*/
private function _fix($str)
{
if (preg_match("/=\?.{0,}\?[Bb]\?/", $str))
{
$str = preg_split("/=\?.{0,}\?[Bb]\?/", $str);
while (list($key, $value) = each($str))
{
if (preg_match("/\?=/", $value))
{
$arrTemp = preg_split("/\?=/", $value);
$arrTemp[0] = base64_decode($arrTemp[0]);
$str[$key] = join("", $arrTemp);
}
}
$str = join("", $str);
}
if (preg_match("/=\?.{0,}\?Q\?/", $str))
{
$str = quoted_printable_decode($str);
$str = preg_replace("/=\?.{0,}\?[Qq]\?/", "", $str);
$str = preg_replace("/\?=/", "", $str);
}
return trim($str);
}
private function _connected()
{
$this->connected = true;
return $this;
}
public function getErrors()
{
$errors = $this->errors;
$this->errors = array ();
return $errors;
}
public function count()
{
if (is_null($this->list))
{
return 0;
}
return count($this->list);
}
public function get($nbr = null)
{
if (is_null($nbr))
{
return $this->list;
}
if ((is_array($this->list)) && (isset($this->list[$nbr])))
{
return $this->list[$nbr];
}
return null;
}
public function fetch($nbr = null)
{
return $this->_callById('_fetch', $nbr);
}
private function _fetchHeader($mbox, $id)
{
$header = imap_header($this->box, $id);
if (!is_object($header))
{
return;
}
$mail = new stdClass();
$mail->id = $id;
$mail->mbox = $mbox;
$mail->timestamp = (isset($header->udate)) ? ($header->udate) : ('');
$mail->date = date("d/m/Y H:i:s", (isset($header->udate)) ? ($header->udate) : (''));
$mail->from = $this->_fix(isset($header->fromaddress) ? ($header->fromaddress) : (''));
$mail->to = $this->_fix(isset($header->toaddress) ? ($header->toaddress) : (''));
$mail->reply_to = $this->_fix(isset($header->reply_toaddress) ? ($header->reply_toaddress) : (''));
$mail->subject = $this->_fix(isset($header->subject) ? ($header->subject) : (''));
$mail->content = array ();
$mail->attachments = array ();
$mail->deleted = false;
return $mail;
}
private function _fetch($mail)
{
$test = imap_reopen($this->box, "{$mail->mbox}");
if (!$test)
{
return $mail;
}
$structure = imap_fetchstructure($this->box, $mail->id);
if ((!isset($structure->parts)) || (!is_array($structure->parts)))
{
$body = imap_body($this->box, $mail->id);
$content = new stdClass();
$content->type = 'content';
$content->mime = $this->_fetchType($structure);
$content->charset = $this->_fetchParameter($structure->parameters, 'charset');
$content->data = $this->_decode($body, $structure->type);
$content->size = strlen($content->data);
$mail->content[] = $content;
return $mail;
}
else
{
$parts = $this->_fetchPartsStructureRoot($mail, $structure);
foreach ($parts as $part)
{
$content = new stdClass();
$content->type = null;
$content->data = null;
$content->mime = $this->_fetchType($part->data);
if ((isset($part->data->disposition))
&& ((strcmp('attachment', $part->data->disposition) == 0)
|| (strcmp('inline', $part->data->disposition) == 0)))
{
$content->type = $part->data->disposition;
$content->name = null;
if (isset($part->data->dparameters))
{
$content->name = $this->_fetchParameter($part->data->dparameters, 'filename');
}
if (is_null($content->name))
{
if (isset($part->data->parameters))
{
$content->name = $this->_fetchParameter($part->data->parameters, 'name');
}
}
$mail->attachments[] = $content;
}
else if ($part->data->type == 0)
{
$content->type = 'content';
$content->charset = null;
if (isset($part->data->parameters))
{
$content->charset = $this->_fetchParameter($part->data->parameters, 'charset');
}
$mail->content[] = $content;
}
$body = imap_fetchbody($this->box, $mail->id, $part->no);
if (isset($part->data->encoding))
{
$content->data = $this->_decode($body, $part->data->encoding);
}
else
{
$content->data = $body;
}
$content->size = strlen($content->data);
}
}
return $mail;
}
private function _fetchPartsStructureRoot($mail, $structure)
{
$parts = array ();
if ((isset($structure->parts)) && (is_array($structure->parts)) && (count($structure->parts) > 0))
{
foreach ($structure->parts as $key => $data)
{
$this->_fetchPartsStructure($mail, $data, ($key + 1), $parts);
}
}
return $parts;
}
private function _fetchPartsStructure($mail, $structure, $prefix, &$parts)
{
if ((isset($structure->parts)) && (is_array($structure->parts)) && (count($structure->parts) > 0))
{
foreach ($structure->parts as $key => $data)
{
$this->_fetchPartsStructure($mail, $data, $prefix . "." . ($key + 1), $parts);
}
}
$part = new stdClass;
$part->no = $prefix;
$part->data = $structure;
$parts[] = $part;
}
private function _fetchParameter($parameters, $key)
{
foreach ($parameters as $parameter)
{
if (strcmp($key, $parameter->attribute) == 0)
{
return $parameter->value;
}
}
return null;
}
private function _fetchType($structure)
{
$primary_mime_type = array ("TEXT", "MULTIPART", "MESSAGE", "APPLICATION", "AUDIO", "IMAGE", "VIDEO", "OTHER");
if ((isset($structure->subtype)) && ($structure->subtype) && (isset($structure->type)))
{
return $primary_mime_type[(int) $structure->type] . '/' . $structure->subtype;
}
return "TEXT/PLAIN";
}
private function _decode($message, $coding)
{
switch ($coding)
{
case 2:
$message = imap_binary($message);
break;
case 3:
$message = imap_base64($message);
break;
case 4:
$message = imap_qprint($message);
break;
case 5:
break;
default:
break;
}
return $message;
}
private function _callById($method, $data)
{
$callback = array ($this, $method);
// data is null
if (is_null($data))
{
$result = array ();
foreach ($this->list as $mail)
{
$result[] = $this->_callById($method, $mail);
}
return $result;
}
// data is an array
if (is_array($data))
{
$result = array ();
foreach ($data as $elem)
{
$result[] = $this->_callById($method, $elem);
}
return $result;
}
// data is an object
if ((is_object($data)) && ($data instanceof stdClass) && (isset($data->id)))
{
return call_user_func($callback, $data);
}
// data is numeric
if (($this->isConnected()) && (is_array($this->list)) && (is_numeric($data)))
{
foreach ($this->list as $mail)
{
if ($mail->id == $data)
{
return call_user_func($callback, $mail);
}
}
}
return null;
}
public function delete($nbr)
{
$this->_callById('_delete', $nbr);
return;
}
private function _delete($mail)
{
if ($mail->deleted == false)
{
$test = imap_reopen($this->box, "{$mail->mbox}");
if ($test)
{
$this->deleted = true;
imap_delete($this->box, $mail->id);
$mail->deleted = true;
}
}
}
public function searchBy($pattern, $type)
{
$result = array ();
if (is_array($this->list))
{
foreach ($this->list as $mail)
{
$match = false;
switch ($type)
{
case self::FROM:
$match = $this->_match($mail->from, $pattern);
break;
case self::TO:
$match = $this->_match($mail->to, $pattern);
break;
case self::REPLY_TO:
$match = $this->_match($mail->reply_to, $pattern);
break;
case self::SUBJECT:
$match = $this->_match($mail->subject, $pattern);
break;
case self::CONTENT:
foreach ($mail->content as $content)
{
$match = $this->_match($content->data, $pattern);
if ($match)
{
break;
}
}
break;
case self::ATTACHMENT:
foreach ($mail->attachments as $attachment)
{
$match = $this->_match($attachment->name, $pattern);
if ($match)
{
break;
}
}
break;
}
if ($match)
{
$result[] = $mail;
}
}
}
return $result;
}
private function _nmatch($string, $pattern, $a, $b)
{
if ((!isset($string[$a])) && (!isset($pattern[$b])))
{
return 1;
}
if ((isset($pattern[$b])) && ($pattern[$b] == '*'))
{
if (isset($string[$a]))
{
return ($this->_nmatch($string, $pattern, ($a + 1), $b) + $this->_nmatch($string, $pattern, $a, ($b + 1)));
}
else
{
return ($this->_nmatch($string, $pattern, $a, ($b + 1)));
}
}
if ((isset($string[$a])) && (isset($pattern[$b])) && ($pattern[$b] == '?'))
{
return ($this->_nmatch($string, $pattern, ($a + 1), ($b + 1)));
}
if ((isset($string[$a])) && (isset($pattern[$b])) && ($pattern[$b] == '\\'))
{
if ((isset($pattern[($b + 1)])) && ($string[$a] == $pattern[($b + 1)]))
{
return ($this->_nmatch($string, $pattern, ($a + 1), ($b + 2)));
}
}
if ((isset($string[$a])) && (isset($pattern[$b])) && ($string[$a] == $pattern[$b]))
{
return ($this->_nmatch($string, $pattern, ($a + 1), ($b + 1)));
}
return 0;
}
private function _match($string, $pattern)
{
return $this->_nmatch($string, $pattern, 0, 0);
}
}
ImapReader.demo.php这是使用示例
<?php
require_once("ImapReader.class.php");
$box = new ImapReader('example.com', '143', 'somebody@example.com', 'xxxxxxxxxxxx');
$box
->connect()
->fetchAllHeaders()
;
echo $box->count() . " emails in mailbox\n";
for ($i = 0; ($i < $box->count()); $i++)
{
$msg = $box->get($i);
echo "Reception date : {$msg->date}\n";
echo "From : {$msg->from}\n";
echo "To : {$msg->to}\n";
echo "Reply to : {$msg->from}\n";
echo "Subject : {$msg->subject}\n";
$msg = $box->fetch($msg);
echo "Number of readable contents : " . count($msg->content) . "\n";
foreach ($msg->content as $key => $content)
{
echo "\tContent " . ($key + 1) . " :\n";
echo "\t\tContent type : {$content->mime}\n";
echo "\t\tContent charset : {$content->charset}\n";
echo "\t\tContent size : {$content->size}\n";
}
echo "Number of attachments : " . count($msg->attachments) . "\n";
foreach ($msg->attachments as $key => $attachment)
{
echo "\tAttachment " . ($key + 1) . " :\n";
echo "\t\tAttachment type : {$attachment->type}\n";
echo "\t\tContent type : {$attachment->mime}\n";
echo "\t\tFile name : {$attachment->name}\n";
echo "\t\tFile size : {$attachment->size}\n";
}
echo "\n";
}
echo "Searching '*Bob*' ...\n";
$results = $box->searchBy('*Bob*', ImapReader::FROM);
foreach ($results as $result)
{
echo "\tMatched: {$result->from} - {$result->date} - {$result->subject}\n";
}
享受