安装
要使这些函数生效，你必须在编译 PHP 的时候添加 --with-imap[=DIR] 选项, DIR 表示c-client安装前缀。比如上面提到的例子中，你可以使用 --with-imap=/usr/local/imap-2000b. 根据以上描述，这个路径是指向你先前创建的文件夹。对于 Windows 用户，应该在php.ini文件中引入php_imap.dll.
Windows 2000之前的系统是不支持的 IMAP 的。这是因为通过SSL连接邮件服务器时使用了加密功能。
Note: 因为取决于 c-client 是如何配置的，所以你应该向 PHP 配置行添加--with-imap-ssl=/path/to/openssl/ 或者 --with-kerberos=/path/to/kerberos 配置信息。
WarningIMAP，recode，YAZ 和 Cyrus 扩展不能同时使用，因为它们共享了相同 的内部符号。注意：Yaz2.0 及以上版本不存在此问题。
运行时配置
这些函数的行为受php.ini中的设置影响。
| 名字 | 默认 | 可修改范围 | 更新日志 |
|---|---|---|---|
| imap.enable_insecure_rsh | "0" | PHP_INI_SYSTEM | Available as of PHP 7.1.25, 7.2.13 and 7.3.0. Formerly, it was implicitly enabled. |
For all the people coming here praying for:
1) a dead-easy way to read MIME attachments, or
2) a dead-easy way to access POP3 folders
Look no further.
<?php
function pop3_login($host,$port,$user,$pass,$folder="INBOX",$ssl=false)
{
$ssl=($ssl==false)?"/novalidate-cert":"";
return (imap_open("{"."$host:$port/pop3$ssl"."}$folder",$user,$pass));
}
function pop3_stat($connection)
{
$check = imap_mailboxmsginfo($connection);
return ((array)$check);
}
function pop3_list($connection,$message="")
{
if ($message)
{
$range=$message;
} else {
$MC = imap_check($connection);
$range = "1:".$MC->Nmsgs;
}
$response = imap_fetch_overview($connection,$range);
foreach ($response as $msg) $result[$msg->msgno]=(array)$msg;
return $result;
}
function pop3_retr($connection,$message)
{
return(imap_fetchheader($connection,$message,FT_PREFETCHTEXT));
}
function pop3_dele($connection,$message)
{
return(imap_delete($connection,$message));
}
function mail_parse_headers($headers)
{
$headers=preg_replace('/\r\n\s+/m', '',$headers);
preg_match_all('/([^: ]+): (.+?(?:\r\n\s(?:.+?))*)?\r\n/m', $headers, $matches);
foreach ($matches[1] as $key =>$value) $result[$value]=$matches[2][$key];
return($result);
}
function mail_mime_to_array($imap,$mid,$parse_headers=false)
{
$mail = imap_fetchstructure($imap,$mid);
$mail = mail_get_parts($imap,$mid,$mail,0);
if ($parse_headers) $mail[0]["parsed"]=mail_parse_headers($mail[0]["data"]);
return($mail);
}
function mail_get_parts($imap,$mid,$part,$prefix)
{
$attachments=array();
$attachments[$prefix]=mail_decode_part($imap,$mid,$part,$prefix);
if (isset($part->parts)) // multipart
{
$prefix = ($prefix == "0")?"":"$prefix.";
foreach ($part->parts as $number=>$subpart)
$attachments=array_merge($attachments, mail_get_parts($imap,$mid,$subpart,$prefix.($number+1)));
}
return $attachments;
}
function mail_decode_part($connection,$message_number,$part,$prefix)
{
$attachment = array();
if($part->ifdparameters) {
foreach($part->dparameters as $object) {
$attachment[strtolower($object->attribute)]=$object->value;
if(strtolower($object->attribute) == 'filename') {
$attachment['is_attachment'] = true;
$attachment['filename'] = $object->value;
}
}
}
if($part->ifparameters) {
foreach($part->parameters as $object) {
$attachment[strtolower($object->attribute)]=$object->value;
if(strtolower($object->attribute) == 'name') {
$attachment['is_attachment'] = true;
$attachment['name'] = $object->value;
}
}
}
$attachment['data'] = imap_fetchbody($connection, $message_number, $prefix);
if($part->encoding == 3) { // 3 = BASE64
$attachment['data'] = base64_decode($attachment['data']);
}
elseif($part->encoding == 4) { // 4 = QUOTED-PRINTABLE
$attachment['data'] = quoted_printable_decode($attachment['data']);
}
return($attachment);
}
?>
[EDIT BY danbrown AT php DOT net: Contains a bugfix by "mn26826" on 09-JUN-2010, which fixed the erroneous reference to $imap as the parameter passed to imap_mailboxmsginfo() within the user function pop3_stat(). This was intended to be $connection.]
[EDIT BY visualmind AT php DOT net: Contains a bugfix by "elias-jobview" on 17-AUG-2010, which fixed the error in pop3_list function which didn't have: return $result]
[EDIT BY danbrown AT php DOT net: Contains a bugfix by "chrismeistre" on 09-SEP-2010, which fixed the erroneous reference to $mbox (should be $connection) in the pop3_list() function.]