Untitle file issue at google drive when using curl API - php

Question

When I try to upload file at google drive using php curl API it is giving untitled. ANd I can't show file name. How can I properly upload file using curl php? I don't want to use client libraries.There is not file title of uploaded file at google drive
function save_application_form($wpcf7) {
//global $wpdb;
$submission = WPCF7_Submission::get_instance();
if ($submission) {
$submited = array();
$submited['title'] = $wpcf7->title();
$submited['posted_data'] = $submission->get_posted_data();
$uploaded_files = $submission->uploaded_files();
}
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$cf7_file_field_name = 'file-846';
$image_location = $uploaded_files[$cf7_file_field_name];
$mime_type = finfo_file($finfo, $image_location);
$token = GetRefreshedAccessToken('client_id', 'refresh_token', 'client_secret');
$ch = curl_init();
curl_setopt_array($ch, array(
CURLOPT_URL => 'https://www.googleapis.com/upload/drive/v3/files?uploadType=media',
CURLOPT_HTTPHEADER => array(
'Content-Type:' . $mime_type,
'Authorization: Bearer ' . $token
),
CURLOPT_POST => 1,
CURLOPT_POSTFIELDS => file_get_contents($image_location),
CURLOPT_RETURNTRANSFER => 1
));
$response = curl_exec($ch);
$err = curl_error($ch);
curl_close($ch);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}
}

Answer 1

You are not uploading the metadata of the file you are only uploading the file itself. THe post body needs to include the file metadata the filename being one of those items.
Offical php client library example
The documentation shows how to do this with googles client library.
$fileMetadata = new Google_Service_Drive_DriveFile(array(
'name' => 'photo.jpg'));
$content = file_get_contents('files/photo.jpg');
$file = $driveService->files->create($fileMetadata, array(
'data' => $content,
'mimeType' => 'image/jpeg',
'uploadType' => 'multipart',
'fields' => 'id'));
printf("File ID: %s\n", $file->id);
PHP CURL wild guess
Sorry i cant help you do this in curl. But it should just be a matter of sending the post body as a JSon string containing the data you wish. The following is my best guess after some Googling.
$data = array("name" => "picture.jpg", "mimeType"=> "image/jpeg");
$data_string = json_encode($data);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);