How to convert character like 北 to actual character?: convert, php, characters

How to convert character like 北 to actual character?

How to convert character like 北 to actual character?

Currently I got this code below to export data into csv file, however the data displayed as 北 but not the actual character, how to solve that? For your information, the data is saved as "北" in database. Your help is appreciated here. Thanks

<?php
      $db_domain = "127.0.0.1";
      $db_user = "root";
      $db_pwd = "password";
      $db_schema = "mydb";

      $link = mysql_connect($db_domain, $db_user, $db_pwd) or die("Could not connect : " . mysql_error());
      mysql_select_db($db_schema) or die("Could not select database");
      $result = mysql_query('SET NAMES utf8;');

      $select = "SELECT * FROM registration";
      $header = "";
      $data = "";

      $export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );
      $fields = mysql_num_fields ( $export );

      for ( $i = 0; $i < $fields; $i++ ) {
            $header .= mysql_field_name( $export , $i ) . "\t";
      }

      while( $row = mysql_fetch_row( $export ) ) {
            $line = '';
            foreach( $row as $value ) {
                  if ( ( !isset( $value ) ) || ( $value == "" ) )      {
                        $value = "\t";
                  } else {
                        $value = str_replace( '"' , '""' , $value );
                        $value = '"' . $value . '"' . "\t";
                  }
                  $line .= $value;
            }
            $data .= trim( $line ) . "\n";
      }
      $data = str_replace( "\r" , "" , $data );

      if ( $data == "" ) {
            $data = "\n(0) Records Found!\n";
      }

      header("Content-type:application/ms-xls; charset=UTF-8");
      header("Content-Disposition: attachment; filename=test.xls");
      header("Pragma: no-cache");
      header("Expires: 0");
      echo "$header\n$data";
      exit();
?>

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How to convert character like 北 to actual character?

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