php - 下载pdf文件时显示错误(难以理解的符号)

我写了一个下载pdf文件的代码。它在localhost上正常工作，但是在我托管的godaddy上运行这些代码时遇到错误。这是代码 <?php include "connect.inc.php"; if(isset($_GET['id'])) { $id=$_GET['id']; $query = "select filename from pdf where id=$id"; $row = mysql_query($query); if(mysql_num_rows($row)==1){ $query_row=mysql_fetch_assoc($row); $name=$query_row['filename']; $path="upload/{$name}"; header('Content-Type: application/pdf'); header('Content-Type: application/octet-stream'); header('Content-Description: File Transfer'); header("Content-Disposition: attachment; filename={$name}"); header('Content-Length: '. filesize($path)); readfile($path); } } ?>输出：％PDF-1.4％âãÏÓ670 0 obj endobj xref 670 7 0000000016 00000 n 0000000912 00000 n 0000000977 00000 n 0000001122 00000 n 0000001188 00000 n 0000001305 00000 n 0000000436 00000 n拖车] >> (adsbygoogle = window.adsbygoogle || []).push({}); 最佳答案 您有两个Content-Type标头。下定决心 (adsbygoogle = window.adsbygoogle || []).push({});