I want to create a upload and download function in my website. The upload script is working but the download script is not working. I am not getting any error but once the files are retrieve from the database i couldn't download it. If i click on the file the file content open in the same page.
<?php
$query = "SELECT id, name FROM upload";
$result = mysql_query($query) or die('Error, query failed');
if(mysql_num_rows($result) == 0) {
echo "Database is empty <br>";
} else {
while(list($id, $name) = mysql_fetch_array($result)) {
?>
<?php echo urlencode($name);?> <br>
<?php
}
}
mysql_close();
?>
</body>
</html>
<?php
if(isset($_GET['id'])) {
// if id is set then get the file with the id from database
$id = $_GET['id'];
$query = "SELECT name, type, size, content " .
"FROM upload WHERE id = '$id'";
$result = mysql_query($query) or die('Error, query failed');
list($name, $type, $size, $content) = mysql_fetch_array($result);
header("Content-length: $size");
header("Content-type: $type");
header("Content-Disposition: attachment; filename=$name");
ob_clean();
flush();
echo $content;
mysql_close();
exit;
}
?>
This is the url to the download site: download
You can't set any headers after output has been sent to the browser. This has clearly been done by the time your last lot of code is executed, because you've got HTML code above it.
It should work by putting your code at the top of your script, instead of the bottom.
Error wise, it sounds like you aren't getting any errors. You should turn on error reporting, at the very least on your local/development environment:
error_reporting(E_ALL);
This would likely tell you the cause of your issue straight away and help you diagnose it quickly.
how do i open/view for editing an uploaded file in php?
i have tried this but it doesn't open the file.
$my_file = 'file.txt';
$handle = fopen($my_file, 'r');
$data = fread($handle,filesize($my_file));
i've also tried this but it wont work.
$my_file = 'file.txt';
$handle = fopen($my_file, 'w') or die('Cannot open file: '.$my_file);
$data = 'This is the data';
fwrite($handle, $data);
what i have in mind is like when you want to view an uploaded resume,documents or any other ms office files like .docx,.xls,.pptx and be able to edit them, save and close the said file.
edit: latest tried code...
<?php
// Connects to your Database
include "configdb.php";
//Retrieves data from MySQL
$data = mysql_query("SELECT * FROM employees") or die(mysql_error());
//Puts it into an array
while($info = mysql_fetch_array( $data ))
{
//Outputs the image and other data
//Echo "<img src=localhost/uploadfile/images".$info['photo'] ."> <br>";
Echo "<b>Name:</b> ".$info['name'] . "<br> ";
Echo "<b>Email:</b> ".$info['email'] . " <br>";
Echo "<b>Phone:</b> ".$info['phone'] . " <hr>";
//$file=fopen("uploadfile/images/".$info['photo'],"r+");
$file=fopen("Applications/XAMPP/xamppfiles/htdocs/uploadfile/images/file.odt","r") or exit("unable to open file");;
}
?>
i am getting the error:
Warning: fopen(Applications/XAMPP/xamppfiles/htdocs/uploadfile/images/file.odt): failed to open stream: No such file or directory in /Applications/XAMPP/xamppfiles/htdocs/uploadfile/view.php on line 17
unable to open file
the file is in that folder, i don't know it wont find it.
It might be either:
A permissions issue on the server. If it's a linux machine, try chmod 754 Applications/XAMPP/xamppfiles/htdocs/uploadfile/images/file.odt (you may need root).
An issue with apache (or whatever webserver you might be using). Make sure you've defined a directory entry in the config file for that site. Documentation here.
Although, if I recall properly, an odt file will just be binary data rather than the text information. That might be what you're looking for, I don't know. If you just want to read the actual text, and you aren't interested in using some library to extract it, you need to save it as plain text. If you're actually trying to edit these files in the browser, you're gonna need a lot more than just fopen.
For text based files you can use file_get_contents and file_put_contents
However, ODT files are zip compressed XML files so you need to decompress them first:
$zip = new ZipArchive;
$res = $zip->open('Applications/XAMPP/xamppfiles/htdocs/uploadfile/images/file.odt');
if ($res === TRUE) {
$zip->extractTo('/tmp/myOdt.xml');
$zip->close();
}
$data = file_get_contents('/tmp/myOdt.xml');
$data .= 'add this to the end';
file_put_contents('path/to/file.txt', $data);
However, it seems your problem regards the actual path of the file. Try using a relative path instead: "images/file.odt"
I am trying to write a function to process images in mySQL / PHP but cannot work out how to store the results. I have included a stripped down version of the code to demonstrate the problem.
The blobs in image.image_o are all correctly stored and can be used to output images to the web page. The function runs without error but afterwards the blobs in image.image_r are just a few bytes long and contain text like "Resource id #5"
I am sure I am doing something dumb - just can't see what it is.
function process_images(){
global $mysql
$sql = "select id, image_o from image";
$res = mysqli_query($mysqli, $sql);
if ($res){
while ($ay = mysqli_fetch_array($res, MYSQLI_ASSOC)){
$id = $ay['id'];
$im = imagecreatefromstring($ay['image_o']);
// do something useful with the image
$sql2 = "update image set image_r = '{$im}' where id = $id";
$res2 = mysqli_query($mysqli, $sql2);
if ($res2){
// blah blah
}else{
echo mysqli_error($mysqli)." in res2";
}
}
}else{
echo mysqli_error($mysqli)." in res";
}
}
I agree with the commentary above that this is generally not advisable. However, here is a great article on why you MIGHT do it, and how. It also highlights some of the cons of storing images in the database.
http://forum.codecall.net/topic/40286-tutorial-storing-images-in-mysql-with-php/
You need to make sure you read the data into the field. Not just the file pointer:
// Temporary file name stored on the server
$tmpName = $_FILES['image']['tmp_name'];
// Read the file
$fp = fopen($tmpName, 'r');
$data = fread($fp, filesize($tmpName));
$data = addslashes($data);
fclose($fp);
// Now take the contents of data and store THAT
In a nutshell, imagecreatefromstring returns "An image resource will be returned on success", not the contents of the file itself. You need to read the contents of that resource before you can store it. Using your code, make the following changes:
function process_images(){
global $mysql
$sql = "select id, image_o from image";
$res = mysqli_query($mysqli, $sql);
if ($res){
while ($ay = mysqli_fetch_array($res, MYSQLI_ASSOC)){
$id = $ay['id'];
$im = imagecreatefromstring($ay['image_o']);
$tempFileName = '/tmp/' . $id . 'jpg';
$imTempFile = imagegd($im, $tempFileName);
$fh = fopen($tempFileName, "r");
$data = fread($fh, filesize($tempFileName));
// do something useful with the image
$sql2 = "update image set image_r = '{$data}' where id = $id";
$res2 = mysqli_query($mysqli, $sql2);
if ($res2){
// blah blah
}else{
echo mysqli_error($mysqli)." in res2";
}
//delete the temp file
unlink($tempFileName);
}
}else{
echo mysqli_error($mysqli)." in res";
}
}
edraw open file using HttpOpenFileFromStream in php
I am using this javascript code on load event
document.OA1.HttpInit();
document.OA1.HttpAddpostString("DocumentID", "sample5.docx");
document.OA1.HttpOpenFileFromStream("http://localhost/rte/action_open_file.php", "Word.Application");
php code action_open_file.php
header("http/1.1 200 OK");
$doc_file_name = $_REQUEST["DocumentID"];
$file_size = filesize($doc_file_name);
$file = fopen($doc_file_name,"r");
$data = fread($handle,$file_size);
fwrite($handle,$data);
fclose($handle);
But it opens empty file in web page but the sample5.docx has some text.
Your JS code is fine. Just replace your action_open_file.php code with the following:
<?php
$filename = $_REQUEST["DocumentID"];
echo "Get Stream Successfully!";
echo "EDA_STREAMBOUNDARY";
$fp=fopen("$filename","r");
print fread($fp,filesize("$filename"));
fclose($fp);
echo "EDA_STREAMBOUNDARY";
exit();
?>
I have some PHP code that runs a query on a database, saves the results to a csv file, and then allows the user to download the file. The problem is, the csv file contains page HTML around the actual csv content.
I've read all the related questions here already, including this one. Unfortunately my code exists within Joomla, so even if I try to redirect to a page that contains nothing but headers, Joomla automatically surrounds it with its own navigation code. This only happens at the time of download; if I look at the csv file that's saved on the server, it does not contain the HTML.
Can anyone help me out with a way to force a download of the actual csv file as it is on the server, rather than as the browser is editing it to be? I've tried using the header location, like this:
header('Location: ' . $filename);
but it opens the file in the browser, rather than forcing the save dialog.
Here's my current code:
//set dynamic filename
$filename = "customers.csv";
//open file to write csv
$fp = fopen($filename, 'w');
//get all data
$query = "select
c.firstname,c.lastname,c.email as customer_email,
a.email as address_email,c.phone as customer_phone,
a.phone as address_phone,
a.company,a.address1,a.address2,a.city,a.state,a.zip, c.last_signin
from {$dbpre}customers c
left join {$dbpre}customers_addresses a on c.id = a.customer_id order by c.last_signin desc";
$votes = mysql_query($query) or die ("File: " . __FILE__ . "<br />Line: " . __LINE__ . "<p>{$query}<p>" . mysql_error());
$counter = 1;
while ($row = mysql_fetch_array($votes,1)) {
//put header row
if ($counter == 1){
$headerRow = array();
foreach ($row as $key => $val)
$headerRow[] = $key;
fputcsv($fp, $headerRow);
}
//put data row
fputcsv($fp, $row);
$counter++;
}
//close file
fclose($fp);
//redirect to file
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=".$filename);
header("Content-Transfer-Encoding: binary");
readfile($filename);
exit;
EDITS
Full URL looks like this:
http://mysite.com/administrator/index.php?option=com_eimcart&task=customers
with the actual download link looking like this:
http://mysite.com/administrator/index.php?option=com_eimcart&task=customers&subtask=export
MORE EDITS
Here's a shot of the page that the code is on; the generated file still is pulling in the html for the submenu. The code for the selected link (Export as CSV) is now
index.php?option=com_eimcart&task=customers&subtask=export&format=raw
Now here is a screenshot of the generated, saved file:
It shrank during the upload here, but the text highlighted in yellow is the html code for the subnav (list customers, add new customer, export as csv). Here's what my complete code looks like now; if I could just get rid of that last bit of html it would be perfect.
$fp= fopen("php://output", 'w');
$query = "select c.firstname,c.lastname,c.email as customer_email,
a.email as address_email,c.phone as customer_phone,
a.phone as address_phone, a.company, a.address1,
a.address2,a.city,a.state,a.zip,c.last_signin
from {$dbpre}customers c
left join {$dbpre}customers_addresses a on c.id = a.customer_id
order by c.last_signin desc";
$votes = mysql_query($query) or die ("File: " . __FILE__ . "<br />Line: " . __LINE__ . "<p>{$query}<p>" . mysql_error());
$counter = 1;
//redirect to file
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=customers.csv");
header("Content-Transfer-Encoding: binary");
while ($row = mysql_fetch_array($votes,1)) {
//put header row
if ($counter == 1){
$headerRow = array();
foreach ($row as $key => $val)
$headerRow[] = $key;
fputcsv($fp, $headerRow);
}
//put data row
fputcsv($fp, $row);
$counter++;
}
//close file
fclose($fp);
UPDATE FOR BJORN
Here's the code (I think) that worked for me. Use the RAW param in the link that calls the action:
index.php?option=com_eimcart&task=customers&subtask=export&format=raw
Because this was procedural, our link was in a file called customers.php, which looks like this:
switch ($r['subtask']){
case 'add':
case 'edit':
//if the form is submitted then go to validation
include("subnav.php");
if ($r['custFormSubmitted'] == "true")
include("validate.php");
else
include("showForm.php");
break;
case 'delete':
include("subnav.php");
include("process.php");
break;
case 'resetpass':
include("subnav.php");
include("resetpassword");
break;
case 'export':
include("export_csv.php");
break;
default:
include("subnav.php");
include("list.php");
break;
}
So when a user clicked on the link above, the export_csv.php file is automatically included. That file contains all the actual code:
<?
header("Content-type: application/octet-stream");
header("Content-Disposition: attachment; filename=customers.csv");
header("Content-Transfer-Encoding: binary");
$fp= fopen("php://output", 'w');
//get all data
$query = "select
c.firstname,c.lastname,c.email as customer_email,
a.email as address_email,c.phone as customer_phone,
a.phone as address_phone,
a.company,a.address1,a.address2,a.city,a.state,a.zip, c.last_signin
from {$dbpre}customers c
left join {$dbpre}customers_addresses a on c.id = a.customer_id order by c.last_signin desc";
$votes = mysql_query($query) or die ("File: " . __FILE__ . "<br />Line: " . __LINE__ . "<p>{$query}<p>" . mysql_error());
$counter = 1;
while ($row = mysql_fetch_array($votes,1)) {
//put header row
if ($counter == 1){
$headerRow = array();
foreach ($row as $key => $val)
$headerRow[] = $key;
fputcsv($fp, $headerRow);
}
//put data row
fputcsv($fp, $row);
$counter++;
}
//close file
fclose($fp);
This is a piece of sample code that I just cooked up to help you out. Use it as an action method in your controller.
function get_csv() {
$file = JPATH_ADMINISTRATOR . DS . 'test.csv';
// Test to ensure that the file exists.
if(!file_exists($file)) die("I'm sorry, the file doesn't seem to exist.");
// Send file headers
header("Content-type: text/csv");
header("Content-Disposition: attachment;filename=test.csv");
// Send the file contents.
readfile($file);
}
This alone will not be enough, because the file you download will still contain the surrounding html. To get rid of it and only receive the csv file's contents you need to add format=raw parameter to your request. In my case the method is inside the com_csvexample component, so the url would be:
/index.php?option=com_csvexample&task=get_csv&format=raw
EDIT
In order to avoid using an intermediate file substitute
//set dynamic filename
$filename = "customers.csv";
//open file to write csv
$fp = fopen($filename, 'w');
with
//open the output stream for writing
//this will allow using fputcsv later in the code
$fp= fopen("php://output", 'w');
Using this method you have to move the code that sends headers before anything is written to the output. You also won't need the call to the readfile function.
Add this method to your controller:
function exportcsv() {
$model = & $this->getModel('export');
$model->exportToCSV();
}
Then add a new model called export.php, code below. You will need to change or extend the code to your situation.
<?php
/**
* #package TTVideo
* #author Martin Rose
* #website www.toughtomato.com
* #version 2.0
* #copyright Copyright (C) 2010 Open Source Matters. All rights reserved.
* #license http://www.gnu.org/copyleft/gpl.html GNU/GPL
*/
//No direct acesss
defined('_JEXEC') or die();
jimport('joomla.application.component.model');
jimport( 'joomla.filesystem.file' );
jimport( 'joomla.filesystem.archive' );
jimport( 'joomla.environment.response' );
class TTVideoModelExport extends JModel
{
function exportToCSV() {
$files = array();
$file = $this->__createCSVFile('#__ttvideo');
if ($file != '') $files[] .= $file;
$file = $this->__createCSVFile('#__ttvideo_ratings');
if ($file != '') $files[] .= $file;
$file = $this->__createCSVFile('#__ttvideo_settings');
if ($file != '') $files[] .= $file;
// zip up csv files to be delivered
$random = rand(1, 99999);
$archive_filename = JPATH_SITE.DS.'tmp'.DS.'ttvideo_'. strval($random) .'_'.date('Y-m-d').'.zip';
$this->__zip($files, $archive_filename);
// deliver file
$this->__deliverFile($archive_filename);
// clean up
JFile::delete($archive_filename);
foreach($files as $file) JFile::delete(JPATH_SITE.DS.'tmp'.DS.$file);
}
private function __createCSVFile($table_name) {
$db = $this->getDBO();
$csv_output = '';
// get table column names
$db->setQuery("SHOW COLUMNS FROM `$table_name`");
$columns = $db->loadObjectList();
foreach ($columns as $column) {
$csv_output .= $column->Field.'; ';
}
$csv_output .= "\n";
// get table data
$db->setQuery("SELECT * FROM `$table_name`");
$rows = $db->loadObjectList();
$num_rows = count($rows);
if ($num_rows > 0) {
foreach($rows as $row) {
foreach($row as $col_name => $value) {
$csv_output .= $value.'; ';
}
$csv_output .= "\n";
}
}
$filename = substr($table_name, 3).'.csv';
$file = JPATH_SITE.DS.'tmp'.DS.$filename;
// write file to temp directory
if (JFile::write($file, $csv_output)) return $filename;
else return '';
}
private function __deliverFile($archive_filename) {
$filesize = filesize($archive_filename);
JResponse::setHeader('Content-Type', 'application/zip');
JResponse::setHeader('Content-Transfer-Encoding', 'Binary');
JResponse::setHeader('Content-Disposition', 'attachment; filename=ttvideo_'.date('Y-m-d').'.zip');
JResponse::setHeader('Content-Length', $filesize);
echo JFile::read($archive_filename);
}
/* creates a compressed zip file */
private function __zip($files, $destination = '') {
$zip_adapter = & JArchive::getAdapter('zip'); // compression type
$filesToZip[] = array();
foreach ($files as $file) {
$data = JFile::read(JPATH_SITE.DS.'tmp'.DS.$file);
$filesToZip[] = array('name' => $file, 'data' => $data);
}
if (!$zip_adapter->create( $destination, $filesToZip, array() )) {
global $mainframe;
$mainframe->enqueueMessage('Error creating zip file.', 'message');
}
}
}
?>
Then go to your default view.php and add a custom buttom, e.g.
// custom export to set raw format for download
$bar = & JToolBar::getInstance('toolbar');
$bar->appendButton( 'Link', 'export', 'Export CSV', 'index.php?option=com_ttvideo&task=export&format=raw' );
Good luck!
You can use Apache's mod_cern_meta to add HTTP headers to static files. Content-Disposition: attachment. The required .htaccess and .meta files can be created by PHP.
Another way to output CSV data in a Joomla application is to create a view using CSV rather than HTML format. That is, create a file as follows:
components/com_mycomp/views/something/view.csv.php
And add content similar to the following:
<?php
// No direct access
defined('_JEXEC') or die;
jimport( 'joomla.application.component.view');
class MyCompViewSomething extends JViewLegacy // Assuming a recent version of Joomla!
{
function display($tpl = null)
{
// Set document properties
$document = &JFactory::getDocument();
$document->setMimeEncoding('text/csv');
JResponse::setHeader('Content-disposition', 'inline; filename="something.csv"', true);
// Output UTF-8 BOM
echo "\xEF\xBB\xBF";
// Output some data
echo "field1, field2, 'abc 123', foo, bar\r\n";
}
}
?>
Then you can create file download links as follows:
/index.php?option=com_mycomp&view=something&format=csv
Now, you would be right to question the 'inline' part in the Content-disposition. If I recall correctly when writing this code some years ago, I had problems with the 'attachment' option. This link which I just googled now seemed familiar as the driver for it: https://dotanything.wordpress.com/2008/05/30/content-disposition-attachment-vs-inline/ . I've been using 'inline' ever since and am still prompted to save the file appropriately from any browsers I test with. I haven't tried using 'attachment' any time recently, so it may work fine now of course (the link there is 7 years old now!)