phpexcel로 테이블을 엑셀파일로 다운로드 하는데 파일형식 오류가 나옵니다.

<?php
include_once('./_common.php');

set_include_path( get_include_path().PATH_SEPARATOR."..");
include_once("xlsxwriter.class.php");

$f_name = "테스트";

 

$result = sql_query("select wr_id,wr_content,wr_name,wr_last,wr_1,wr_2,wr_3,wr_4,wr_5,wr_6,wr_7,wr_8,wr_9,wr_10 from {$write_table} order by wr_name");

$header = [];
$widths = [];

 

// $header 제목명은 모두 달라야 됨
$header["연번"] = 'integer';
$header["예약자"] = 'string';
$header["예약일자"] = 'string';
$header["예약시간"] = 'string';
$header["전화번호"] = 'string';
$header["성별"] = 'string';
$header["요청사항"] = 'string';
$header["신청일"] = 'string';

 

//셀너비
$widths[] = 10; $widths[] = 20; $widths[] = 20; $widths[] = 20; $widths[] = 20; $widths[] = 20;$widths[] = 50; $widths[] = 30;

 

$writer = new XLSXWriter();

 

$styles1 = array('font'=>'맑은 고딕','font-size'=>12,'font-style'=>'bold', 'fill'=>'#ccff999', 'halign'=>'left', 'valign'=>'center', 'border'=>'left,right,top,bottom', 'widths'=>$widths);

$styles2 = array( 'font'=>'맑은 고딕','font-size'=>12, 'halign'=>'left', 'valign'=>'center', 'border'=>'left,right,top,bottom','wrap_text'=>true);
 

$writer->writeSheetHeader('Sheet1', $header, $styles1);    //제목줄 서식 포함

$contents = [];

$x = 0;

foreach ($result as $field) {
    $x++;
    $contents[] = $y;
    $contents[] = $field['wr_name'];
    $contents[] = $field['wr_1'];
    $contents[] = $field['wr_2'];
    $contents[] = $field['wr_3'];
    $contents[] = $field['wr_4'];
    $contents[] = $field['wr_content'];
    $contents[] = $field['wr_last'];

    $writer->writeSheetRow('Sheet1', $contents, $styles2);
    $contents = [];
}

$filename = $f_name."신청현황.xlsx";

$writer->writeToFile(G5_DATA_PATH.'/tmp/'.$filename);

$filepath = G5_DATA_PATH.'/tmp/'.$filename;
$filepath = addslashes($filepath);
$original = urlencode($filename);

if(preg_match("/msie/i", $_SERVER["HTTP_USER_AGENT"]) && preg_match("/5\.5/", $_SERVER["HTTP_USER_AGENT"])) {
    header("content-type: doesn/matter");
    header("content-length: ".filesize("$filepath"));
    header("content-disposition: attachment; filename=\"$original\"");
    header("content-transfer-encoding: binary");
} else if (preg_match("/Firefox/i", $_SERVER["HTTP_USER_AGENT"])){
    header("content-type: file/unknown");
    header("content-length: ".filesize("$filepath"));
    header("content-disposition: attachment; filename=\"".basename($filename)."\"");
    header("content-description: php generated data");
} else {
    header("content-type: file/unknown");
    header("content-length: ".filesize("$filepath"));
    header("content-disposition: attachment; filename=\"$original\"");
    header("content-description: php generated data");
}
header("pragma: no-cache");
header("expires: 0");
flush();

$fp = fopen($filepath, "rb");

if (!fpassthru($fp)) {
    fclose($fp);
}

 

//파일 삭제

$delete_file = G5_DATA_PATH.'/tmp/'.$filename;
if(file_exists($delete_file) ){
    @unlink($delete_file);
}