I am a newbie to PHP and need help in exporting a selected content from Mysql Table to MS Excel using PHP. I need this done by a click of a button or a link.
Below is a piece of code I have done so far but I am consistently getting a warning as "Cannot modify header information - headers already sent". Also suggest a good way to export table on a click of a button\link. Thanks
//Export Contents
$header = '';
$data = '';
$fields = mysql_num_fields($sql);
//fetch header
for($i=0; $i < $fields; $i++)
{
$header .= mysql_field_name($sql, $i)."\t";
}
//fetch data each row, store on tabular row data
while($row = mysql_fetch_row($sql))
{
$line = '';
foreach($row as $value)
{
if(!isset($value) || $value == "")
{
$value = "\t";
}
else
{
$value = str_replace('"', '""', $value);
$value = '"'.$value.'"'."\t";
}
$line .= $value;
}
$data .= trim($line)."\n";
$data = str_replace("\r", "", $data);
}
//Naming the excel sheet
$name = $customerFilter."_".date('d-m-y').".xls";
header("Content-type:application/vnd.ms-excel;name='excel'");
header("Content-Disposition: attachment; filename=$name");
header("Pragma: no-cache");
header("Expires: 0");
//Output Data
echo $header."\n\n".$data;
The mysql query
SELECT <column list>
FROM <table>
INTO OUTFILE '/tmp/somefilename.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
Then redirect to the file
if you got a "headers already sent" you have some output (whitespaces) before sending your excel headers. Please enshure that the <?php tag is the very first in your file.
Please read this thread: How to fix "Headers already sent" error in PHP
You should use a library like this http://phpexcel.codeplex.com/ to be able to output stable excel files.
Here is a hello world example for phpexcel:
http://phpexcel.codeplex.com/wikipage?title=Examples&referringTitle=Home
I want to download a .csv file through link.For that a Download link is defined in a template file.
To generate .csv file I have written a piece of code as follows.
public function loadPartnerApplicantData() {
$inboundBo = BoFactory::getInboundHttpRequestBo();
$fileType = $inboundBo->getSanitizedGetParam('f');
$formId = $inboundBo->getSanitizedGetParam('fid');
ServiceFactory::getFormService()->loadFormDetails($formId);
$dbTable = BoFactory::getFormBo()->getFormDbTable($formId);
$formName = slugify(BoFactory::getFormBo()->getFormName());
$fileName = $formName . "." . time();
$fieldMasterSqlQuery = "SELECT field_name,field_label FROM" . FORM_FIELDS_MASTER_v2 . "where form_id='$formId' order by serial_no";
$fieldMasterSqlQueryStatus = mysql_query(mysql_fetch_assoc($fieldMasterSqlQuery));
$csvHeader = "";
$fieldNameArray = array();
foreach ($fieldMasterSqlQueryStatus as $key => $value) {
if ($value['field_name'] == 'declaration' || $value['field_name'] == 'docPicture') {
continue;
}
$csvHeader.= "\"{$value['field_label']}\";";
$fieldNameArray[] = $value['field_name'];
}
$queryString = implode(",", $fieldNameArray);
$dbTableSqlQuery = "SELECT $queryString FROM `$dbTable`";
$dbTableSqlQueryStaus = mysql_query(mysql_fetch_assoc($dbTableSqlQuery));
ef_clearBuffer();
// To generate csv
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=$fileName.csv");
header("Pragma: no-cache");
header("Expires: 0");
echo($csvHeader);
foreach ($dbTableSqlQueryStaus as $applicantData) {
echo "\n";
foreach ($fieldNameArray as $fieldName) {
echo "\"$applicantData[$fieldName]\";";
}
echo "\n";
}
}
And the required .csv is generated .
But at the end of .csv file HTML tags of the browser is getting displayed. which should not be there.
Please suggest me to remove the html content from the generated .csv file.
Thanks in advance.
Since your function handles the request till the end (i.e., delivers all data), and you don't want the framework (whichever you're using) to continue processing, add
exit(0);
as last line of your function. That will halt the processing after the content is delivered and prevent the framework/environment from sending additional data.
Maybe you already had some echo commands before the header manipulation, then the .csv file which you want to download will contains all strings you have written before.
Alright, I'm starting to go a little crazy...
jQuery Table to CSV export
I'm looking at that thread.
It does work, but the output does everything by each LINE not by the HTML table rows. For example, I have an address that is in one HTML cell:
1234 Berryman Lane
Atlanta, GA 12345
Unit # 54A
That will be THREE rows when it outputs to excel, instead of one cell, with returns in it.
Further, there's no way to strip out the HTML that is inside of the HTML cells with that solution, as far as I know...
Finally, Excel gives a warning when opening that file.
What I'm getting at, is that I'd rather just have something that can take the inner most data in the HTML cells (not including HTML inside of a cell), and rip it to CSV. Is there anything that does this well these days?
UPDATE
Well, I just found the best thing yet, this is pretty perfect:
$table = 'myTable';
$file = 'exportFile';
$result = mysql_query("SHOW COLUMNS FROM ".$table."");
$i = 0;
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
$csv_output .= "\"" . $row['Field']."\",";
$i++;
}
}
$csv_output .= "\n";
$values = mysql_query("SELECT * FROM ".$table."");
while ($rowr = mysql_fetch_row($values)) {
for ($j=0;$j<$i;$j++) {
$csv_output .= "\"" . $rowr[$j]."\",";
}
$csv_output .= "\n";
}
$filename = $file."_".date("Y-m-d_H-i",time());
header("Content-type: application/vnd.ms-excel");
header("Content-disposition: csv" . date("Y-m-d") . ".csv");
header( "Content-disposition: filename=".$filename.".csv");
print $csv_output;
exit;
I think this is my keeper. It goes to a CSV file with no issues, loads in Excel with no issues, it's my dream come true!
well, you can always use the same markup in excel as it can render html if you use the .xls file type, render the html table and change the content type to "application/vnd.ms-excel" specify a filename for that response as *.xls and you should have a usable excel sheet.
If there are no dobule quotes in the data, you can wrap the content of each cell in double quotes so your data looks like:
"...","...","..."
Now you can have commas in the data. You may also need to deal with new lines and returns in the data, probably best to remove them completely but that's up to you.
Thanks for all suggestions. As stated in my edited post, this script below was a great solution:
$table = 'myTable';
$file = 'exportFile';
$result = mysql_query("SHOW COLUMNS FROM ".$table."");
$i = 0;
if (mysql_num_rows($result) > 0) {
while ($row = mysql_fetch_assoc($result)) {
$csv_output .= "\"" . $row['Field']."\",";
$i++;
}
}
$csv_output .= "\n";
$values = mysql_query("SELECT * FROM ".$table."");
while ($rowr = mysql_fetch_row($values)) {
for ($j=0;$j<$i;$j++) {
$csv_output .= "\"" . $rowr[$j]."\",";
}
$csv_output .= "\n";
}
$filename = $file."_".date("Y-m-d_H-i",time());
header("Content-type: application/vnd.ms-excel");
header("Content-disposition: csv" . date("Y-m-d") . ".csv");
header( "Content-disposition: filename=".$filename.".csv");
print $csv_output;
exit;
I think this is my keeper. It goes to a CSV file with no issues, loads in Excel with no issues, it's my dream come true!
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!)
using php i exported report in excel.But got stuck in merging cells.
i want to merge the first 10 cells to dispaly the Name of the Company.
The variable which has the company name is in one cell, tried to merge the cells but i cudn't...
I used this function to export,
where $query variable holds the mysql query which is sent as a parameter,
and in $fieldname variable, array of fieldnames to display header.
everything is ok, n works properly.
one thing i cudn't do was merging cells....
function to_excel_export($query,$fieldName)
{
$filename = date('d-m-Y');
$headers = '';
$data = '';
$obj =& get_instance();
if ($query->num_rows() == 0)
{
echo '<p>The table appears to have no data.</p>';
}
else
{
for($i=0;$i<sizeof($fieldName);$i++)
{
$headers .= $fieldName[$i] . "\t";
}
foreach ($query->result() as $row)
{
$line = '';
foreach($row as $value)
{
if ((!isset($value)) OR ($value == ""))
{
$value = "\t";
}
else
{
$value = str_replace('"', '""', $value);
$value = '"' . $value . '"' . "\t";
}
$line .= $value;
}
$data .= trim($line)."\n";
}
$data = str_replace("\r","",$data);
header("Content-type: application/x-msdownload");
header("Content-Disposition: attachment; filename=$filename.xls");
$compName = 'C O M P A N Y - N A M E ';
echo $compName."\n\n";
echo $headers."\n".$data;
}
}
$compName = 'C O M P A N Y - N A M E ';
echo $compName."\n\n";
how to merge the cells to display the name which is in $compName variable.
You're not creating an Excel file, you're creating a CSV file (tab separated in this case), and that format does NOT support any kind of formatting (font, color, even merging cells isn't an option).... and you're not even using PHP's built-in fputcsv() function to do so :(
Simply giving a file an extension of .xls doesn't make it an Excel file. MS Excel is capable of reading CSV files, but some versions of Excel will actually warn you that the format isn't correct when you load it.
Create a proper Excel BIFF or OfficeOpenXML file using one of the many libraries available to do so (such as PHPExcel), and then you'll be able to set formatting such as cell background colours.