encoding - imap_open() in PHP is not handling UTF-8 -

i using php imap functions read mailbox receives utf-8 encoded plain text email (generated server). accented characters replaced question mark (?). below code , following 2 attempts @ fixing it. how fix problem? have no control on server generates messages, claim encoded utf-8. mb_detect_encoding says imap_body function returning ascii string, i've found mb_detect_encoding buggy in past.

$connection = imap_open( '{localhost:993/ssl/novalidate-cert}inbox', 'xxxxxxx', 'xxxxxxx', 0, 1 ); $result = imap_search( $connection, 'unseen' ); if ( $result )     {     foreach ( $result $msgno )         {         $body = imap_body( $connection, $msgno );          // ... (code process message) ...          imap_mail_move( $connection, "$msgno:$msgno", 'inbox.processed' );         }      imap_expunge( $connection );     imap_close( $connection );         }     } 

i tried following convert utf-8, though message utf-8:

$current_encoding = mb_detect_encoding( $body, 'auto' ); // returns "ascii" $body = mb_convert_encoding( $body, $current_encoding, 'utf-8' ); 

i tried:

$body = mb_convert_encoding( $body, 'utf-8', 'utf-8' ); 

here solution: got hold of people generating email , made following header changes:

content-type: text/html; charset=utf-8 content-transfer-encoding: quoted-printable 

that solved it. php program sees utf-8 characters.