imap_rfc822_parse_headers

(PHP 4, PHP 5, PHP 7, PHP 8)

imap_rfc822_parse_headers — 文字列からメールヘッダを解釈する

説明

imap_rfc822_parse_headers(string $headers, string $default_hostname = "UNKNOWN"): stdClass

複数のヘッダ要素を含むオブジェクトを取得します。 imap_header() と同じようなものです。

パラメータ

headers: パースされたヘッダデータ。
default_hostname: デフォルトのホスト名。

戻り値

imap_header() が返すオブジェクトと似たものを返します。フラグおよび他の要素は IMAP サーバーから取得するいう点が異なります。

参考

imap_rfc822_parse_adrlist() - アドレス文字列を解釈します

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User Contributed Notes 4 notes

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Kevin Casper <casperke at gmail dot com> ¶

19 years ago

I was lightly probing this function's behavoir. 

It handles rfc882 fields:

date
subject
message_id
to
from
reply-to
sender         - will generate using 'from' field if not in 
                     header
references
in-reply-to
cc

doesn't handle rfc882 fields:
return-path 
received
resent-         I think this field may be obsolete
keywords      

If there are other rfc822 fields or behavoirs for the function, then I can't speak of them as they weren't in my test.
As it is relevent to what I'm currently doing I may add more about this function from time to time.

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Marco Arment ¶

14 years ago

This function will cause a PHP Fatal Error if the text you're passing to it overflows a 16 KB buffer internally (SENDBUFLEN in the source).

I haven't looked into it in depth yet, but limiting the input text to less than 16,384 characters still produced this in one error case on our servers, but reducing the boundary to 12,000 fixed it.

Most real-world mail headers are well under 4 KB.

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phrank ¶

15 years ago

This function is marked as internal function by the c-client library and should not be used by php directly.

Please be aware that the result will always contain fields that have not been set in the message. For example reply_to and sender will always be set even if there is no Reply-To and Sender header fields are defined in the message.

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Sven dot Dickert at planb dot de ¶

22 years ago

The object you get from imap_rfc822_parse_headers differs from the object you get from imap_headerinfo/imap_header in the following points. You won't get the:
* flags
* msgno
* size
* Maildate
* udate
* fetchfrom
* fetchsubject

udate can be simulated with
$headerobj=imap_rfc822_parse_headers ($header);
$udate=strtotime($headerobj->date);

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