note 97983 added to function.iconv-mime-encode

Looks like this function suffers from the same bug as mb_encode_mime() with long strings of non us-ascii characters. The function then returns false. This applies for utf-8 to utf-8 "conversion".

<?php
$subject = 'Вы находитесь здесь: Главная > продукт';

$prefs = array(
    'scheme' => 'Q',
    'input-charset' => 'UTF-8',
    'output-charset' => 'UTF-8',
    'line-length' => 76,
    'line-break-chars' => "\r\n",
);

echo 'Original: ' . $subject . PHP_EOL;
$enc = iconv_mime_encode( 'Subject', $subject, $prefs );
var_dump( $enc );  // will show bool(false)
?>

As a workaround, you could explode() the value on spaces and encode each word separately. Then remove the "Subject: " in front of the resulting strings and join() them with "\r\n " (don't forget the SPACE after the \n) as separator.
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Server IP: 85.214.154.209
Probable Submitter: 87.234.222.66
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Manual Page -- http://www.php.net/manual/en/function.iconv-mime-encode.php
Edit        -- https://master.php.net/note/edit/97983
Del: integrated  -- https://master.php.net/note/delete/97983/integrated
Del: useless     -- https://master.php.net/note/delete/97983/useless
Del: bad code    -- https://master.php.net/note/delete/97983/bad+code
Del: spam        -- https://master.php.net/note/delete/97983/spam
Del: non-english -- https://master.php.net/note/delete/97983/non-english
Del: in docs     -- https://master.php.net/note/delete/97983/in+docs
Del: other reasons-- https://master.php.net/note/delete/97983
Reject      -- https://master.php.net/note/reject/97983
Search      -- https://master.php.net/manage/user-notes.php