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(PHP 5, PHP 7)
iconv_mime_decode_headers — 一次性解码多个 MIME 头字段
$encoded_headers
[, int $mode
= 0
[, string $charset
= ini_get("iconv.internal_encoding")
]] )一次性解码多个 MIME 头字段。
encoded_headers
编码过的头,是一个字符串。
mode
mode
决定了 iconv_mime_decode_headers() 遇到畸形 MIME 头字段时的行为。
你可以指定为以下位掩码的任意组合。
值 | 常量 | 描述 |
---|---|---|
1 | ICONV_MIME_DECODE_STRICT | 如果设置了,给定的头将会以 » RFC2047 定义的标准完全一致。 这个选项默认禁用,因为大量有问题的邮件用户代理不遵循标准并产生不正确的 MIME 头。 |
2 | ICONV_MIME_DECODE_CONTINUE_ON_ERROR | 如果设置了, iconv_mime_decode_headers() 尝试忽略任何语法错误并继续处理指定的头。 |
charset
可选参数 charset
指定了字符集结果的表现。
如果省略了,将使用
iconv.internal_encoding。
成功时返回 encoded_headers
指定的 MIME 头的整套关联数组,解码时出现错误则返回 FALSE
。
返回元素的每个键代表独立字段名,相应的元素代表一个字段值。 如果有多个同一名称的字段, iconv_mime_decode_headers() 自动将他们按出现顺序结合成数字索引的数组。
Example #1 iconv_mime_decode_headers() 例子
<?php
$headers_string = <<<EOF
Subject: =?UTF-8?B?UHLDvGZ1bmcgUHLDvGZ1bmc=?=
To: example@example.com
Date: Thu, 1 Jan 1970 00:00:00 +0000
Message-Id: <example@example.com>
Received: from localhost (localhost [127.0.0.1]) by localhost
with SMTP id example for <example@example.com>;
Thu, 1 Jan 1970 00:00:00 +0000 (UTC)
(envelope-from example-return-0000-example=example.com@example.com)
Received: (qmail 0 invoked by uid 65534); 1 Thu 2003 00:00:00 +0000
EOF;
$headers = iconv_mime_decode_headers ( $headers_string , 0 , "ISO-8859-1" );
print_r ( $headers );
?>
以上例程会输出:
Array ( [Subject] => Prüfung Prüfung [To] => example@example.com [Date] => Thu, 1 Jan 1970 00:00:00 +0000 [Message-Id] => <example@example.com> [Received] => Array ( [0] => from localhost (localhost [127.0.0.1]) by localhost with SMTP id example for <example@example.com>; Thu, 1 Jan 1970 00:00:00 +0000 (UTC) (envelope-from example-return-0000-example=example.com@example.com) [1] => (qmail 0 invoked by uid 65534); 1 Thu 2003 00:00:00 +0000 ))
[#1] TheConstructor [2010-07-12 12:07:25]
If you need lower-case header-names (as I read the documentation case is not guranteed) try something like
<?php
$headers_string = <<<EOF
Subject: =?UTF-8?B?UHLDvGZ1bmcgUHLDvGZ1bmc=?=
To: example@example.com
Date: Thu, 1 Jan 1970 00:00:00 +0000
Message-Id: <example@example.com>
Received: from localhost (localhost [127.0.0.1]) by localhost
with SMTP id example for <example@example.com>;
Thu, 1 Jan 1970 00:00:00 +0000 (UTC)
(envelope-from example-return-0000-example=example.com@example.com)
Received: (qmail 0 invoked by uid 65534); 1 Thu 2003 00:00:00 +0000
EOF;
$headers = iconv_mime_decode_headers($headers_string, 0, "ISO-8859-1");
$headers = array_combine(array_map("strtolower", array_keys($headers)), array_values($headers));
print_r($headers);
?>