Composes and returns a string that represents a valid MIME header field, which looks like the following:
Subject: =?ISO-8859-1?Q?Pr=FCfung_f=FCr?= Entwerfen von einer MIME kopfzeile |
You can control the behaviour of iconv_mime_encode() by specifying an associative array that contains configuration items to the optional third parameter preferences. The items supported by iconv_mime_encode() are listed below. Note that item names are treated case-sensitive.
Table 1. Configuration items supported by iconv_mime_encode()
Item | Type | Description | Default value | Example |
---|---|---|---|---|
scheme | boolean | Specifies the method to encode a field value by. The value of this item may be either "B" or "Q", where "B" stands for base64 encoding scheme and "Q" stands for quoted-printable encoding scheme. | B | B |
input-charset | string | Specifies the character set in which the first parameter field_name and the second parameter field_value are presented. If not given, iconv_mime_encode() assumes those parameters are presented to it in the iconv.internal_charset ini setting. | iconv.internal_charset | ISO-8859-1 |
output-charset | string | Specifies the character set to use to compose the MIME header. If not given, the same value as input-charset will be used. | the same value as input-charset | UTF-8 |
line-length | integer | Specifies the maximum length of the header lines. The resulting header is "folded" to a set of multiple lines in case the resulting header field would be longer than the value of this parameter, according to RFC2822 - Internet Message Format. If not given, the length will be limited to 76 characters. | 76 | 996 |
line-break-chars | string | Specifies the sequence of characters to append to each line as an end-of-line sign when "folding" is performed on a long header field. If not given, this defaults to "\r\n" (CR LF). Note that this parameter is always treated as an ASCII string regardless of the value of input-charset. | \r\n | \n |
See also imap_binary(), mb_encode_mimeheader() and imap_8bit().