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force download mp3, not downloading full file.....pls help


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I have the following code to force download mp3 file. the code is working fine but its only downloading 799 bytes. I am new in php and not able to figure out the problem. please help me to sort it out. thanks.


                include "dbconnect.php"; 

                $query=("select *from $cat where id='$id'"); 
                $file = $row["link"]; 
                header ("Content-type: octet/stream"); 
                header("Content-Disposition: attachment; filename=\"".basename($file)."\";" );  
                header("Content-Length: ".filesize($file)); 

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when i open the file with editor i see:


<br />

<b>Warning</b>:  filesize() [<a href='function.filesize'>function.filesize</a>]: stat failed for /downloads/songs/Bangla/Band/Aurthohin/Aushomapto 2/Alo R Adhar.mp3 in <b>/home/amarlon1/public_html/banglasong/download.php</b> on line <b>20</b><br />

<br />

<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/amarlon1/public_html/banglasong/download.php:20) in <b>/home/amarlon1/public_html/banglasong/download.php</b> on line <b>20</b><br />

<br />

<b>Warning</b>:  readfile(/downloads/songs/Bangla/Band/Aurthohin/Aushomapto 2/Alo R Adhar.mp3) [<a href='function.readfile'>function.readfile</a>]: failed to open stream: No such file or directory in <b>/home/amarlon1/public_html/banglasong/download.php</b> on line <b>22</b><br />



i dont have any idea where is the problem. pls help.

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The file contents you just showed is a clear explanation of the problem. You are NOT downloading the file. Instead, the download contains an error that was generated when trying to send the file to the user. There is an error generated when attempting to run filesize() and when trying to run readfile(). You can ignore the header error - that's only because teh first error sent output tot he browser.


My guess is your query is failing because of the '*' being right next to the 'FROM'. But, you shouldn't be using '*' anyway since you don't need all the fields


Edit: there are several other issues as well. You are not escaping the user input which could lead to SQL Injection attacks. I assume that ID should be in INT value.

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Here is a revision of your script that corrects the query and adds some security and debugging code


    include ("dbconnect.php");
    $link = dbconnect(); 
    $cat  = mysql_real_escape_string($_GET['catagory']);
    $id   = intval($_GET['id']);

    //Create/Run query
    $query  = "SELECT `link` FROM `{$cat}` WHERE `id`='{$id}' LIMIT 1";
    $result = mysql_query($query) or die(mysql_error());

    //Validate/Process results
    if(!mysql_num_rows()) { die("No results for id '{$id}'"); }
    $file = mysql_result($result, 0); 
    if(!is_file($file)) { die("Result '{$file}' was not a file"); }
    $basename = basename($file);
    $filesize = filesize($file);

    //Output results
    header("Content-type: octet/stream");
    header("Content-Disposition: attachment; filename='{$basename}';");
    header("Content-Length: {$filesize}"); 

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The path/filename you have stored in the database is apparently relative to your document_root folder or perhaps even your banglasong folder. When used directly as the path/filename, the leading slash / refers to the root of the current hard disk.


You would either need to make that into an absolute file system path or a path relative to the download.php script.


To use an absolute file system path -


$file = $_SERVER['DOCUMENT_ROOT'] . $file; // if the stored path/filename starts at your document_root folder


$file = $_SERVER['DOCUMENT_ROOT'] . '/banglasong' . $file; // if the stored path/filename starts at your banglasong folder


To use a path relative to folder that the download.php file is in -


$file =  '.' . $file;





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