PHP REST download file - php

Question

I have a webservice with a function like this
$app->get('/downloadPdf', function () use($app)
{
$log = 'example.pdf';
$res = $app->response();
$res['Content-Description'] = 'File Transfer';
$res['Content-Type'] = 'application/octet-stream';
$res['Content-Disposition'] ='attachment; filename=' . basename($log);
$res['Content-Transfer-Encoding'] = 'binary';
$res['Expires'] = '0';
$res['Cache-Control'] = 'must-revalidate';
$res['Pragma'] = 'public';
$res['Content-Length'] = filesize($log);
readfile($log);
});
Testing it with Advanced Rest Client works fine..
Question is .. how do i call it from my client with all the headers etc.
To specify more. I know there are a lot of examples on how to download a specific file by inserting its url into the curlopt_url with the complete address to the file. What i want is to let the webservice decide which file to return...
Thanks

Answer 1

Never got an answer .. so !!!
This is how i made it work....
Service Function can be seen below
$app->post('/downloadReport', 'authenticate', function() use ($app)
{
verifyRequiredParams(array('reportId'));
$body = $app->request()->getBody();
$params_str = urldecode($body);
$input = json_decode($params_str,true);
$report_id = $input['reportId'];
$db = new DbHandler();
$db->getReport($report_id);
$path = $db->getReportPdfPath($report_id);
$res = $app->response();
$res['Content-Description'] = 'File Transfer';
$res['Content-Type'] = 'application/octet-stream';
$res['Content-Disposition'] ='attachment; filename=' . basename($path);
$res['Content-Transfer-Encoding'] = 'binary';
$res['Expires'] = '0';
$res['Cache-Control'] = 'must-revalidate';
$res['Pragma'] = 'public';
$res['Content-Length'] = filesize($path);
readfile($path);
});
Called the function like this:
public function downloadReport($api_key,$id)
{
$curl_post_data = array('reportId' => $id);
$headers = array('Content-type: application/json','Authorization: '.$api_key,);
$fp = fopen (dirname(__FILE__) . '/localfile.tmp', 'w+');//This is the file where we save the information
$curl = curl_init(DONWLOAD_REPORT);
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($curl_post_data));
curl_setopt($curl, CURLOPT_USERPWD, $api_key);
$file = curl_exec($curl);
if ($file === false)
{
$info = curl_getinfo($curl);
curl_close($curl);
die('error occured during curl exec. Additioanl info: ' . var_export($info));
}
curl_close($curl);
header('Content-type: ' . 'application/octet-stream');
header('Content-Disposition: ' . 'attachment; filename=report.pdf');
echo $file;
}

Answer 2

I have same problem with you,
I am using this code, and it works, return a pdf file from webservice.
$api = new RestClient(array(
'base_url' => 'http://another-webservice.com/',
'headers' => array(
'X-Token' => $res->headers->x_token,
'Accept' => 'application/pdf',
),
));
$result = $api->execute("reports/report",'GET', $params);
$filename = 'Report.pdf';
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="' . $filename . '"');
header('Content-Transfer-Encoding: binary');
header('Accept-Ranges: bytes');
echo $result->response;
References: How to display PDF in Browser