如何在电子邮件中提取附件？
$structure = imap_fetchstructure($this->stream, $this->msgno);
//print_r($structure);
if(isset($structure->parts)){
foreach($structure->parts as $section => $part){
if(isset($part->disposition)){
if(strtolower($part->disposition) == 'attachment'){
echo 'section = '.$section."\n";
$body = imap_fetchbody($this->stream, $this->msgno, $section);
$finfo = new finfo(FILEINFO_MIME);
echo $finfo->buffer($body) . "\n";
$file = Init::$dynamic['data_path'].$this->msgno.'_'.$part->dparameters[0]->value;
imap_savebody($this->stream, $file, $this->msgno, $section);
echo $finfo->file($file) . "\n";
//print_r($body);
}
}
}
}
返回的附件甚至没有接近正确的文件大小，返回的数据看起来像这样
ZHUga2VuZGVyIHZlbCBpa2tlIG5vZ2VuIHNvbSBlciB2ZWQgYXQgc3RhcnRlIGVnZW4gdmly
a3NvbWhlZCBlbGxlciBzb20gbGlnZSBlciBzdGFydGV0IG9wPyA6KQ0KDQpmb3JkaSBqZWcg
bmV0b3AgZXIgYmxldmV0IGbmcmRpZyBtZWQgYXQgbGF2ZSBldCD4a29ub21pc3lzdGVtIG1l
ZCBlbiByZXZpc29yIHNvbSBlciB1ZHZpa2xldCBtZWQgc+ZybGlndCBoZW5ibGlrIHDlIGl2
5nJrc+Z0dGVyZSBzb20gb2Z0ZSBpa2tlIGhhciBkZW4gc3RvcmUgaW5kc2lndCBpIPhrb25v
bWkgOik=
相同的文件即使是副本也具有相同的文件大小
答案 0 :(得分：4)
我认为你的代码变得复杂。
您的问题是您没有获得编码数据
$body = imap_fetchbody($this->stream, $this->msgno, $part);
//$part=2 (first attachment file)
//$part=3 (second attachment file) ...
在获取该文件中的真实数据之前，请先查看
$coding = $structure->parts[$part]->encoding;
if ($coding == 0) {
$body = imap_7bit($body);
} elseif ($coding == 1) {
$body= imap_8bit($body);
} elseif ($coding == 2) {
$body = imap_binary($body);
} elseif ($coding == 3) {
$body = imap_base64($body);
} elseif ($coding == 4) {
$body = imap_qprint($body);
} elseif ($coding == 5) {
$body = $body;
}
所以你可以尝试打印出来：
echo $body;
注意：$ section是文件的一部分。
答案 1 :(得分：1)
你所拥有的是二进制数据的ASCII表示，使用称为base64的编码方案进行编码。完全收到字符串后，使用base64_decode访问二进制数据，通常用尾随=表示。
答案 2 :(得分：1)
$emailtop= imap_search($inbox,'SUBJECT "'.$word.'" SINCE "'.sinceDate.'" BEFORE "'.beforeDate.'"');
/* if any emails found, iterate through each email */
if($emailtop) {
/* put the newest emails on top */
//rsort($emails);
//print_r($emails); //die;
/* for every email... */
foreach($emailtop as $email_number)
{
echo "</br> emailtop".$email_number;
$overview = imap_fetch_overview($inbox,$email_number,0);
echo '</br><span class="subject">'.$overview[0]->subject.'</span> ';
//echo 'ds</br><span class="subject">'.$overview[0]->subject.'</span> ';
if (!file_exists($dateTime)) {
mkdir($dateTime, 0777, true);
}
/* get mail structure */
$structure = imap_fetchstructure($inbox, $email_number);
$attachments = array();
/* if any attachments found... */
if(isset($structure->parts) && count($structure->parts))
{
echo "<pre>";print_r($structure->parts);
for($i = 0; $i < count($structure->parts); $i++)
{
if(isset($structure->parts[$i]->parts) && !empty($structure->parts[$i]->parts) && count($structure->parts[$i]->parts)>0)
{
echo "</br> SubCategory".$email_number;
//echo "<pre>";print_r($structure->parts[$i]);
for($y = 0; $y < count($structure->parts[$i]->parts); $y++)
{
echo "</br> SubCategory loop".$email_number;
//echo "<pre>";print_r($structure->parts[$i]->parts);
$attachments[$y] = array(
'is_attachment' => false,
'filename' => '',
'name' => '',
'attachment' => ''
);
//die;
if($structure->parts[$i]->parts[$y]->ifdparameters==1)
{
foreach($structure->parts[$i]->parts[$y]->dparameters as $object)
{
if(strtolower($object->attribute) == 'filename')
{
$attachments[$y]['is_attachment'] = true;
$attachments[$y]['filename'] = $object->value;
}
}
}
if($structure->parts[$i]->parts[$y]->ifparameters)
{
foreach($structure->parts[$i]->parts[$y]->parameters as $object)
{
if(strtolower($object->attribute) == 'name')
{
$attachments[$y]['is_attachment'] = true;
$attachments[$y]['name'] = $object->value;
}
}
}
if($attachments[$y]['is_attachment'])
{
$attachments[$y]['attachment'] = imap_fetchbody($inbox, $email_number, ($i+1).'.'.($y+1));
/* 4 = QUOTED-PRINTABLE encoding */
if($structure->parts[$i]->parts[$y]->encoding == 3)
{
//echo "hi ". $attachments[$y]['attachment']; die;
$attachments[$y]['attachment'] = base64_decode($attachments[$y]['attachment']);
}
/* 3 = BASE64 encoding */
elseif($structure->parts[$i]->parts[$y]->encoding == 4)
{
$attachments[$y]['attachment'] = quoted_printable_decode($attachments[$y]['attachment']);
}
}
}
}
else
{
echo "</br> Single".$email_number;
$attachments[$i] = array(
'is_attachment' => false,
'filename' => '',
'name' => '',
'attachment' => ''
);
//die;
if($structure->parts[$i]->ifdparameters==1)
{
foreach($structure->parts[$i]->dparameters as $object)
{
if(strtolower($object->attribute) == 'filename')
{
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['filename'] = $object->value;
}
}
}
if($structure->parts[$i]->ifparameters)
{
foreach($structure->parts[$i]->parameters as $object)
{
if(strtolower($object->attribute) == 'name')
{
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['name'] = $object->value;
}
}
}
if($attachments[$i]['is_attachment'])
{
$attachments[$i]['attachment'] = imap_fetchbody($inbox, $email_number, $i+1);
/* 4 = QUOTED-PRINTABLE encoding */
if($structure->parts[$i]->encoding == 3)
{
$attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
}
/* 3 = BASE64 encoding */
elseif($structure->parts[$i]->encoding == 4)
{
$attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
}
}
}
}
}
/* iterate through each attachment and save it */
foreach($attachments as $attachment)
{
if($attachment['is_attachment'] == 1)
{
$filename = $attachment['name'];
if(empty($filename))
$filename = $attachment['filename'];
if(!in_array($filename, $dowloadAttachments))
{
$dowloadAttachments[] = $filename;
/* To check extension of attachment */
$info = pathinfo($filename);
$xlsExtension = array('xls','xlsm','xlss','csv');
if (in_array($info["extension"],$xlsExtension)) {
/* prefix the email number to the filename in case two emails
* have the attachment with the same file name.
*/
$tmpFile = $filename;
$filename = $dateTime."/".$filename;
$fp = fopen($filename, "w+");
fwrite($fp, $attachment['attachment']);
fclose($fp);
require "calculateValue.php";
}
}
}
答案 3 :(得分：0)
打开IMAP流，以从您的INBOX提取电子邮件并使用搜索条件搜索电子邮件。
$inbox = imap_open('{imap.gmail.com:993/imap/ssl}INBOX', $username, $password) or die('Cannot connect: ' . imap_last_error());
$inboxmails = imap_search($inbox, 'SUBJECT "'.$subject.'" SINCE "'.$since_date.'" BEFORE "'.$before_date.'"', SE_UID);
您可以使用此代码提取多个附件，它可以正常工作并从单个邮件中提取多个附件。
您必须使用imap_open（）打开流，然后才能使用imap_search（）搜索消息。它返回您的电子邮件号码数组。
假设电子邮件号码为369。
$email = 369;
$msgno = imap_msgno($inbox, $email);
foreach($attachmentObj as $key => $val)
{
if($val['is_attachment']){
echo "\nFilename: ".$val['filename']."\n";
echo "Extension: ". pathinfo($val['filename'],PATHINFO_EXTENSION);
//print_r($val);?>
<img src="data:image/jpeg;base64,<?php echo base64_encode($val['attachment']);?>" width="200">
<?php
}
}
要获取电子邮件附件，必须获取imap_fetchstructure，这将返回一个对象，您可以在其中检查是否有可用的附件。
function extract_attachments($connection, $message_number) {
$attachments = array();
$structure = imap_fetchstructure($connection, $message_number);
if(isset($structure->parts) && count($structure->parts)) {
for($i = 0; $i < count($structure->parts); $i++) {
$attachments[$i] = array(
'is_attachment' => false,
'filename' => '',
'name' => '',
'attachment' => ''
);
if($structure->parts[$i]->ifdparameters) {
foreach($structure->parts[$i]->dparameters as $object) {
if(strtolower($object->attribute) == 'filename') {
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['filename'] = $object->value;
}
}
}
if($structure->parts[$i]->ifparameters) {
foreach($structure->parts[$i]->parameters as $object) {
if(strtolower($object->attribute) == 'name') {
$attachments[$i]['is_attachment'] = true;
$attachments[$i]['name'] = $object->value;
}
}
}
if($attachments[$i]['is_attachment']) {
$attachments[$i]['attachment'] = imap_fetchbody($connection, $message_number, $i+1);
if($structure->parts[$i]->encoding == 3) { // 3 = BASE64
$attachments[$i]['attachment'] = base64_decode($attachments[$i]['attachment']);
}
elseif($structure->parts[$i]->encoding == 4) { // 4 = QUOTED-PRINTABLE
$attachments[$i]['attachment'] = quoted_printable_decode($attachments[$i]['attachment']);
}
}
}
}
return $attachments;
}