Download csv from codeigniter mysql - php

Question

I think I'm missing something obvious. I'm trying to export a dataset from a MySQL query to CSV without printing it to the browser.
Here's my code:
<?php
$this->load->helper('download');
$list = $stories;
$fp = fopen('php://output', 'w');
foreach ($list as $fields) {
fputcsv($fp, $fields);
}
$data = file_get_contents('php://output'); // Read the file's contents
$name = 'data.csv';
force_download($name, $data);
fclose($fp);
?>
$stories is my array created from the MySQL query.
Currently everything prints to the browser with no errors and no download but I would like to force a CSV download. How can I do this?
final working code:
$this->load->helper('download');
$list = $stories;
$fp = fopen('php://output', 'w');
foreach ($list as $fields) {
fputcsv($fp, $fields);
}
$data = file_get_contents('php://output');
$name = 'data.csv';
// Build the headers to push out the file properly.
header('Pragma: public'); // required
header('Expires: 0'); // no cache
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private',false);
header('Content-Disposition: attachment; filename="'.basename($name).'"'); // Add the file name
header('Content-Transfer-Encoding: binary');
header('Connection: close');
exit();
force_download($name, $data);
fclose($fp);

Answer 1

You can call model CSV() from your controller as
$this->load->model('Users_model');
$this->Users_model->csv();
and in the model
function csv()
{
$this->load->dbutil();
$this->load->helper('file');
$this->load->helper('download');
$query = $this->db->query("SELECT * FROM Users");
$delimiter = ",";
$newline = "\r\n";
$data = $this->dbutil->csv_from_result($query, $delimiter, $newline);
force_download('CSV_Report.csv', $data);
}
Your File will start downloading

Answer 2

I can't tell what headers are set from the Codeigniter force_download() function sets. If it is indeed going to the screen I would suspect the necessary headers are missing. You can add the below headers to your code to set correct csv dowload headers (The cache control will ensure fresh data download each time:
header('Content-Description: File Transfer');
header('Content-Type: application/csv');
header('Content-Disposition: attachment; filename='.$name);
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');
header('Content-Length: ' . filesize($file));

Answer 3

i am use this and its work
header('Content-Type: text/csv; charset=utf-8');
header('Expires: 0');
header('Cache-Control: must-revalidate');
header("Content-Disposition: attachment; filename=backup" . date('y-m-d') . ".csv");
header('Last-Modified: ' . date('D M j G:i:s T Y'));
$outss = fopen("php://output", "w");
$this->db->order_by('ID', 'DESC');
$query = $this->db->get('urls');
foreach ($query->result_array() as $rows) {
fputcsv($outss, $rows);
}
fclose($outss);
return;

Answer 4

If you are trying to generate reports in csv format then it will quite easy with codeigniter.
Place this code in your Controller
function get_report()
{
$this->load->model('Main_Model');
$this->load->dbutil();
$this->load->helper('file');
/* get the object */
$report = $this->Main_Model->print_report();
$delimiter = ",";
$newline = "\r\n";
$new_report = $this->dbutil->csv_from_result($report, $delimiter, $newline);
write_file( 'application/third_party/file.csv', $new_report);
$this->load->view('report_success.php');
}
Put this code into Model
public function print_report()
{
return $query = $this->db->query("SELECT * FROM Table_name");
}
report_success.php is just Successful Notification.
Your Report is being Exported. Thank you
Finally Your "file.csv" is generated.
its basically stored at physical storage.
In CodeIgniter/application/third-party/file.csv
it works.
it will help you.

Answer 5

Here we have sample result set from MySQL and want to export in CSV file.
Step 1: Get MySql data in key value pair.
$data = array(
'0' => array('Name'=> 'Parvez', 'Status' =>'complete', 'Priority'=>'Low', 'Salary'=>'001'),
'1' => array('Name'=> 'Alam', 'Status' =>'inprogress', 'Priority'=>'Low', 'Salary'=>'111'),
'2' => array('Name'=> 'Sunnay', 'Status' =>'hold', 'Priority'=>'Low', 'Salary'=>'333'),
'3' => array('Name'=> 'Amir', 'Status' =>'pending', 'Priority'=>'Low', 'Salary'=>'444'),
'4' => array('Name'=> 'Amir1', 'Status' =>'pending', 'Priority'=>'Low', 'Salary'=>'777'),
'5' => array('Name'=> 'Amir2', 'Status' =>'pending', 'Priority'=>'Low', 'Salary'=>'777')
);
Step 2: PHP code to get options type and force to browser download file instead of display.
if(isset($_POST["ExportType"]))
{
switch($_POST["ExportType"])
{
case "export-to-csv" :
// Submission from
$filename = $_POST["ExportType"] . ".csv";
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Content-type: text/csv");
header("Content-Disposition: attachment; filename=\"$filename\"");
ExportCSVFile($data);
//$_POST["ExportType"] = '';
exit();
default :
die("Unknown action : ".$_POST["action"]);
break;
}
}
function ExportCSVFile($records) {
// create a file pointer connected to the output stream
$fh = fopen( 'php://output', 'w' );
$heading = false;
if(!empty($records))
foreach($records as $row) {
if(!$heading) {
// output the column headings
fputcsv($fh, array_keys($row));
$heading = true;
}
// loop over the rows, outputting them
fputcsv($fh, array_values($row));
}
fclose($fh);
}
Step 3: Define html layout for display data in table and button to fire export-to-csv action.
<div>Export to csv</div>
<form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post" id="export-form">
<input type="hidden" value='' id='hidden-type' name='ExportType'/>
</form>
<table id="" class="table table-striped table-bordered">
<tr>
<th>Name</th>
<th>Status</th>
<th>Priority</th>
<th>Salary</th>
</tr>
<tbody>
<?php foreach($data as $row):?>
<tr>
<td><?php echo $row ['Name']?></td>
<td><?php echo $row ['Status']?></td>
<td><?php echo $row ['Priority']?></td>
<td><?php echo $row ['Salary']?></td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
Step 3: Now we will use jQuery code to get click event.
<script type="text/javascript">
$(document).ready(function() {
jQuery('#export-to-csv').bind("click", function() {
var target = $(this).attr('id');
switch(target) {
case 'export-to-csv' :
$('#hidden-type').val(target);
//alert($('#hidden-type').val());
$('#export-form').submit();
$('#hidden-type').val('');
break
}
});
});
</script>