imap_body() 返回空字符串

Question

各位开发者大家好，

我目前正在尝试使用 imap 阅读所有电子邮件。我正在尝试使用 imap_headerinfo 获取 header 信息，使用 imap_fetchbody 获取 body 信息。但是，我得到了所有 headerinfo，但我只从 fetchbody 函数中得到一个空字符串作为 return。我希望有人能帮助我

$this->inbox = imap_open($server, $user, $password);

    // Header und Body der Email auslesen
    $emails = imap_search($this->inbox,'ALL');
    foreach($emails as $k) {
        $this->email_contents[$k] = array(
            'header' => imap_headerinfo($this->inbox, $k),
            'body' => imap_fetchbody($this->inbox, $k, '1')
        );
    }
    imap_close($this->inbox);

fetch_structure

    object(stdClass)#65 (11) {
  ["type"]=>
  int(1)
  ["encoding"]=>
  int(0)
  ["ifsubtype"]=>
  int(1)
  ["subtype"]=>
  string(5) "MIXED"
  ["ifdescription"]=>
  int(0)
  ["ifid"]=>
  int(0)
  ["ifdisposition"]=>
  int(0)
  ["ifdparameters"]=>
  int(0)
  ["ifparameters"]=>
  int(1)
  ["parameters"]=>
  array(1) {
    [0]=>
    object(stdClass)#66 (2) {
      ["attribute"]=>
      string(8) "boundary"
      ["value"]=>
      string(36) "------------CC4C1146391EA6C129642420"
    }
  }
  ["parts"]=>
  array(2) {
    [0]=>
    object(stdClass)#67 (12) {
      ["type"]=>
      int(0)
      ["encoding"]=>
      int(1)
      ["ifsubtype"]=>
      int(1)
      ["subtype"]=>
      string(5) "PLAIN"
      ["ifdescription"]=>
      int(0)
      ["ifid"]=>
      int(0)
      ["lines"]=>
      int(30)
      ["bytes"]=>
      int(590)
      ["ifdisposition"]=>
      int(0)
      ["ifdparameters"]=>
      int(0)
      ["ifparameters"]=>
      int(1)
      ["parameters"]=>
      array(2) {
        [0]=>
        object(stdClass)#68 (2) {
          ["attribute"]=>
          string(7) "charset"
          ["value"]=>
          string(5) "utf-8"
        }
        [1]=>
        object(stdClass)#69 (2) {
          ["attribute"]=>
          string(6) "format"
          ["value"]=>
          string(6) "flowed"
        }
      }
    }
    [1]=>
    object(stdClass)#70 (13) {
      ["type"]=>
      int(5)
      ["encoding"]=>
      int(3)
      ["ifsubtype"]=>
      int(1)
      ["subtype"]=>
      string(4) "JPEG"
      ["ifdescription"]=>
      int(0)
      ["ifid"]=>
      int(0)
      ["bytes"]=>
      int(1036)
      ["ifdisposition"]=>
      int(1)
      ["disposition"]=>
      string(10) "attachment"
      ["ifdparameters"]=>
      int(1)
      ["dparameters"]=>
      array(1) {
        [0]=>
        object(stdClass)#71 (2) {
          ["attribute"]=>
          string(8) "filename"
          ["value"]=>
          string(11) "logo_sm.jpg"
        }
      }
      ["ifparameters"]=>
      int(1)
      ["parameters"]=>
      array(1) {
        [0]=>
        object(stdClass)#72 (2) {
          ["attribute"]=>
          string(4) "name"
          ["value"]=>
          string(11) "logo_sm.jpg"
        }
      }
    }
  }
}

Answer 1

imap-fetchbody() 在处理附加电子邮件时工作异常，并且其行为不一致。

我本来打算 re-write 这个，但老实说，作者 atamido 在展示为什么会发生这种情况方面做得非常出色，所以我会谦虚地引用他的主要评论:: http://php.net/manual/en/function.imap-fetchbody.php 他还包括一个如何提取正文的示例

imap-fetchbody() will decode attached email messages inline with the rest of the email parts, however the way it works when handling attached email messages is inconsistent with the main email message. With an email message that only has a text body and does not have any mime attachments, imap-fetchbody() will return the following for each requested part number:
(empty) - Entire message
0 - Message header
1 - Body text
    With an email message that is a multi-part message in MIME format, and contains the message text in plain text and HTML, and has
a file.ext attachment, imap-fetchbody() will return something like the following for each requested part number:
(empty) - Entire message
0 - Message header
1 - MULTIPART/ALTERNATIVE
1.1 - TEXT/PLAIN
1.2 - TEXT/HTML
2 - file.ext
Now if you attach the above email to an email with the message text in plain text and HTML, imap_fetchbody() will use this type of part number system:
(empty) - Entire message
0 - Message header
1 - MULTIPART/ALTERNATIVE
1.1 - TEXT/PLAIN
1.2 - TEXT/HTML
2 - MESSAGE/RFC822 (entire attached message)
2.0 - Attached message header
2.1 - TEXT/PLAIN
2.2 - TEXT/HTML
2.3 - file.ext
Note that the file.ext is on the same level now as the plain text and HTML, and that there is no way to access the MULTIPART/ALTERNATIVE in the attached message.

Here is a modified version of some of the code from previous posts that will build an easily accessible array that includes accessible attached message parts and the message body if there aren't multipart mimes. The $structure variable is the output of the imap_fetchstructure() function. The returned $part_array has the field 'part_number' which contains the part number to be fed directly into the imap_fetchbody() function.

<?php
function create_part_array($structure, $prefix="") {
    //print_r($structure);
    if (sizeof($structure->parts) > 0) {    // There some sub parts
        foreach ($structure->parts as $count => $part) {
            add_part_to_array($part, $prefix.($count+1), $part_array);
        }
    }else{    // Email does not have a seperate mime attachment for text
        $part_array[] = array('part_number' => $prefix.'1', 'part_object' => $obj);
    }
   return $part_array;
}
// Sub function for create_part_array(). Only called by create_part_array() and itself. 
function add_part_to_array($obj, $partno, & $part_array) {
    $part_array[] = array('part_number' => $partno, 'part_object' => $obj);
    if ($obj->type == 2) { // Check to see if the part is an attached email message, as in the RFC-822 type
        //print_r($obj);
        if (sizeof($obj->parts) > 0) {    // Check to see if the email has parts
            foreach ($obj->parts as $count => $part) {
                // Iterate here again to compensate for the broken way that imap_fetchbody() handles attachments
                if (sizeof($part->parts) > 0) {
                    foreach ($part->parts as $count2 => $part2) {
                        add_part_to_array($part2, $partno.".".($count2+1), $part_array);
                    }
                }else{    // Attached email does not have a seperate mime attachment for text
                    $part_array[] = array('part_number' => $partno.'.'.($count+1), 'part_object' => $obj);
                }
            }
        }else{    // Not sure if this is possible
            $part_array[] = array('part_number' => $prefix.'.1', 'part_object' => $obj);
        }
    }else{    // If there are more sub-parts, expand them out.
        if (sizeof($obj->parts) > 0) {
            foreach ($obj->parts as $count => $p) {
                add_part_to_array($p, $partno.".".($count+1), $part_array);
            }
        }
    }
}
?>

imap_body() 返回空字符串

imap_body() returning empty string

php

email

imap