Write to a file in PHP and then download it - php

Question

I am working on a project where I get a file stream and write this file to the servers local disk.
I then want PHP to download it but instead it just dumps out the data of the file to the page.
Below is how I am writing the file and trying to tell PHP to download it
$settingsManager = new SettingsManager();
$this->tempWriteLocation = $settingsManager->getSpecificSetting("hddFileWriterLocation");
$downloadUrl = $settingsManager->getSpecificSetting("tempFileUrlDownload") . "/$this->tempFileName";
if (!$this->checkIfDirectoryExists())
{
throw new Exception("Failed to create temp write directory: $this->tempWriteLocation");
}
$filePathAndName = "$this->tempWriteLocation\\$this->tempFileName";
$fh = fopen($filePathAndName, "w");
if (!$fh)
{
throw new Exception("Failed to open file handle for: $filePathAndName. " . error_get_last());
}
fwrite($fh, $this->fileData);
fclose($fh);
//return $downloadUrl;
header('Content-Description: File Transfer');
header('Content-Type: audio/wav');
header('Content-Disposition: attachment; filename='.basename($filePathAndName));
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
header('Content-Length: ' . filesize($filePathAndName));
ob_clean();
flush();
readfile($filePathAndName);
When the above code being run, I get the following output (only a snippet)
RIFF\tWAVELIST2INFOISFT%Aculab Media System Server V2.3.4b11fmt
##fact�sdata�sUU������UUUUUU�UUU��U���UU��UUU�UUUU���UU���UU�����UU
Just so you know the diamonds are actual output I get back, not anything wrong with Stack Overflow displaying something properly.
I've tried setting the content-type to be force-download but doesn't make any difference.

Answer 1

Try this header:
header('Content-type: audio/x-wav', true);
header('Content-Disposition: attachment;filename=wav-filename.wav');
and see if this works. From what I see you have you code formation setup correctly. Fixing the headers should download the file automatically.