downloadPlot.php
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<?php
require_once 'config.php';
if (!isset($_POST['sessionId']))
{
header("HTTP/1.0 400 Bad Request");
echo json_encode(array("success" => false, "error" => "Unknown session Id"));
exit;
}
$sessionId = $_POST['sessionId'];
if (!isset($_POST['tabId']))
{
header("HTTP/1.0 400 Bad Request");
echo json_encode(array("success" => false, "error" => "Unknown tab Id"));
exit;
}
$tabId = $_POST['tabId'];
download_plot($sessionId, $tabId);
function download_plot($sessionId, $tabId)
{
// Must be fresh start
if( headers_sent() )
{
header("HTTP/1.0 400 Bad Request");
echo json_encode(array("success" => false, "error" => "Headers Sent"));
return;
}
// Required for some browsers
if(ini_get('zlib.output_compression'))
ini_set('zlib.output_compression', 'Off');
//Build file path
$fullPath = USERPATH."/".$sessionId."/RES/Plot_/".$tabId.".png";
// File Exists?
if( file_exists($fullPath) ){
// Parse Info / Get Extension
$fsize = filesize($fullPath);
$path_parts = pathinfo($fullPath);
$ctype="image/png";
header("Pragma: public"); // required
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: private",false); // required for certain browsers
header("Content-Type: $ctype");
header("Content-Disposition: attachment; filename=\"".basename($fullPath)."\";" );
header("Content-Transfer-Encoding: binary");
header("Content-Length: ".$fsize);
ob_clean();
flush();
readfile( $fullPath );
} else
{
header("HTTP/1.0 400 Bad Request");
echo json_encode(array("success" => false, "error" => "No existing plot"));
return;
}
}
?>