Php 所有Mp3文件仅以3kb下载且已损坏

这段代码强制我在Chrome和Mozilla上下载。但问题是所有文件大小都是3kb。为什么？大小不同，如3MB、4MB、3.5MB，下载文件只是一个损坏的3kb。。。请帮忙

注意：如果使用标题重定向，它将在Chrome中正常下载，或在其他浏览器中打开，并在不下载的情况下开始播放

<?php
    //Bring in My functions
    require_once ('../inc/functions.php');
    //Bring in my header
    require_once ('../inc/header.php');
?>
<!-- Page body starts -->
    <div class="container">
        <div class="col-md-9 contentArea">      
<?php
//Get File, Check For Existence and Download
//Get File, Check For Existence and Download
        if(isset($_GET['file'])){
            $file = sanitizeMySQL($con, $_GET['file']);
            $checkFile = "SELECT * FROM files WHERE f_song = '$file' AND f_del='0'";
            $checkFileRun = mysqli_query($con, $checkFile);
            $fileName = mysqli_fetch_assoc($checkFileRun);
            //$song = $fileName['f_song'];
            if($fileName['f_song']==null || $fileName['f_song'] == ""){
                echo '<h4 class="text-center"><i class="fa fa-times-circle fa-3x red"></i><br />Sorry! This is does not Exist on this Server or has been moved</h4>';
            }else{
                $updateDownload = "UPDATE b_files SET f_count={$fileName['f_count']}+1 WHERE f_song ='$file' AND f_del='0'";
                $updateDownloadRun = mysqli_query($con, $updateDownload);
                $filePath = SITE_URL."music/".$file;
                $fileSize = filesize($filePath);
                header("Cache-Control: public");
                header("Content-Description: File Transfer");
                header("Content-Length: ".$fileSize);
                header("Content-Disposition: attachment; filename=".$file);
                header("Content-Type: audio/mpeg, audio/x-mpeg, audio/x-mpeg-3, audio/mpeg3");
                header("Content-Transfer-Encoding: binary");
                //Read the file
                readfile($filePath);        
                //header("Location:".SITE_URL.'music/'.urldecode($fileName['file_song_name']));
                exit();
            }
        }elseif(!isset($_GET['file'])){
            echo '<h4 class="text-center"><i class="fa fa-times-circle fa-3x red"></i><br />Sorry! File Not Found</h4>';
        }
//File Download Ends
        ?>
        </div>
        <!-- Call In The SideBar -->
        <?php require_once '../inc/sidebar.php'; ?>
    </div>

<?php
    require_once ('../inc/footer.php');
?>

在执行readfile时，您已经将包含的文件和一些HTML写入了输出缓冲区。这将导致媒体文件损坏。在输出任何HTML内容之前，您可能需要放置readfile并退出（或die（））

而站点URL对$filePath不起作用。您可能需要通过预结束找到正确的文件路径

...dirname(dirname(__file__))...

谢谢Vishva8kumara。我已经删除了所有的输出和下载，它的大小为零字节，文件已损坏。下面是新代码

   <?php
    //Bring in My functions
    require_once ('../inc/functions.php');
//Get File, Check For Existence and Download
//Get File, Check For Existence and Download
        if(isset($_GET['file'])){
            $file = sanitizeMySQL($con, $_GET['file']);
            $checkFile = "SELECT * FROM files WHERE f_song = '$file' AND f_del='0'";
            $checkFileRun = mysqli_query($con, $checkFile);
            $fileName = mysqli_fetch_assoc($checkFileRun);
            //$song = $fileName['f_song'];
            if($fileName['f_song']==null || $fileName['f_song'] == ""){
                echo '<h4 class="text-center"><i class="fa fa-times-circle fa-3x red"></i><br />Sorry! This is does not Exist on this Server or has been moved</h4>';
            }else{
                $updateDownload = "UPDATE b_files SET f_count={$fileName['f_count']}+1 WHERE f_song ='$file' AND f_del='0'";
                $updateDownloadRun = mysqli_query($con, $updateDownload);
                $filePath = "http://localhost/du/music/".$file;
                $fileSize = filesize($filePath);
                header("Cache-Control: public");
                header("Content-Description: File Transfer");
                header("Content-Length: ".$fileSize);
                header("Content-Disposition: attachment; filename=".$file);
                header("Content-Type: audio/mpeg, audio/x-mpeg, audio/x-mpeg-3, audio/mpeg3");
                header("Content-Transfer-Encoding: binary");
                //Read the file
                readfile($filePath);        
                //header("Location:".SITE_URL.'music/'.urldecode($fileName['file_song_name']));
                exit();
            }
        }
?>

使用完整的本地路径
/path/to/mp3
而不是
$filePath=SITE\u URL.“music/”$file
中的
SITE\u URL
，这并没有解决问题。我已经试过101%确定了
SITE\u URL.“music/”$file
和
/path/to/my/mp3
仍然是相同的输出在代码编辑器中打开mp3文件。错误信息应该在你的3kb mp3文件中。我在记事本中打开了mp3文件，里面只有文件路径
http://localhost/du/my-mp3 mp3文件
，我再次将其复制到我的url，它下载了适用于meThanks Vishva8kumara的正确文件。我已经删除了所有的输出，它下载的大小为零字节。下面是新的代码块注释的标题部分现在，所以你宁愿看到mp3文件的内容在浏览器上。这将更容易调试代码，因此您可以取消对标题的注释。然后，代替readfile，回显$filePath并查看是否获得正确的文件路径。如果我回显$filePath，则不会发生任何事情。相反，它仍然下载一个3kbHmm的损坏文件。。。我将文件路径更改为
$filePath=“C:\wamp\www\du\music\\”$file它下载了正确的文件，但是我想把它删除到服务器上的时候呢？我该怎么办？