Cannot upload .doc file with google drive sdk - php

Question

I can upload .docx file to google drive from my apps, but when i tried to upload .doc file, this error appeared :
An error occurred: Error calling POST https://www.googleapis.com/upload/drive/v2/files?uploadType=multipart&key=AIzaSyCm1WqPp05lBRjKSpxdtHjS8lz6WLeoWlU: (400) Invalid mime type provided
That error appeared too when I uploaded .ppt .xls file. The documentation says we can store any MIME type in Google Drive. What's wrong here? Anybody knows?
This is my upload function :
function insertFile($title, $description, $parentId, $mimeType, $filename) {
$file = new DriveFile();
$file->setTitle($title);
$file->setDescription($description);
$file->setMimeType($mimeType);
if ($parentId != null) {
$parent = new ParentReference();
$parent->setId($parentId);
$file->setParents(array($parent));
}
try {
$data = file_get_contents($filename);
$createdFile = $this->service->files->insert($file, array(
'data' => $data,
'mimeType' => $mimeType,
));
return $createdFile;
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
}
}
[UPDATE] I'm using CI and this is my function in controller that calls insertFile function :
function upload() {
$title = $this->input->post('title');
$description = $this->input->post('description');
$parentId = $this->input->post('parentId');
if ($_FILES["file"]["error"] > 0) {
echo "Error: " . $_FILES["file"]["error"] . "<br>";
} else {
$driveHandler = new DriveHandler($_SESSION['credentials']);
$driveHandler->BuildService($_SESSION['credentials']);
$ext = substr(strrchr($_FILES["file"]["name"],'.'),1);
if($title === ""){
$fileTitle = $_FILES["file"]["name"];
} else {
$fileTitle = "$title.$ext";
}
$driveHandler->insertFile($fileTitle, $description, $parentId, $_FILES["file"]["type"], $_FILES["file"]["tmp_name"]);
}

Answer 1

When I try to use var_dump($mimeType) for .docx file, the result is :
string(71) "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
and for .doc file :
string(20) ""application/msword""
Based on the results, I found the problem. There is an additional double quote in $mimeType for .doc file. So I try to change my code like this :
$data = file_get_contents($filename);
$mime = str_replace('"', "", $mimeType);
$createdFile = $this->service->files->insert($file, array(
'data' => $data,
'mimeType' => $mime,
));
It now works.

Answer 2

Rather than just replacing double quotes, you can use a negative character class in regular expression with preg_replace() to replace any non alphanumeric, /, or . characters.
$mimeType = preg_replace("~[^a-zA-Z0-9/\.]*~", "", $mimeType);