iconv_mime_encode
PHP 5, PHP 7, PHP 8
iconv_mime_encode - Composes a MIME header field
iconv_mime_encode(
string$field_name,
string$field_value,
[array$options = []] ): string|false
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
Parameters
- field_name
-
The field name.
- field_value
-
The field value.
- options
-
You can control the behaviour of iconv_mime_encode by specifying an associative array that contains configuration items to the optional third parameter options. The items supported by iconv_mime_encode are listed below. Note that item names are treated case-sensitive.
Configuration items supported by iconv_mime_encode
Item Type Description Default value Example scheme string 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_encoding ini setting. iconv.internal_encoding ISO-8859-1 output-charset string Specifies the character set to use to compose the MIME header. iconv.internal_encoding UTF-8 line-length int 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
Return Values
Returns an encoded MIME field on success, or false if an error occurs during the encoding.