RESTful uploading of a video file in PHP - rest

Question

I want to upload a video file to a server using POST request. There is not much information available about it in the internet.
I usually do check the data what i have send using this code
$params = $_REQUEST;
return $params;
I check it in POSTMAN. I have table called video_review
id
video_url
movie_id
user_id
date_time
when i choose a video file and click send i want the location of video file to be saved into the video_url field. But in the controller when i run this code return $params; i get nothing.
EDIT
Made some progress
public function actionCreate_video_review()
{
$allowedExts = array("jpg", "jpeg", "gif", "png", "mp3", "mp4", "wma","mkv");
$extension = pathinfo($_FILES['video_url']['name'], PATHINFO_EXTENSION);
if ( ($_FILES["video_url"]["type"] == "video/mp4")|| ($_FILES["video_url"]["type"] == "video/x-matroska")
&& ($_FILES["video_url"]["size"] < 20000)
&& in_array($extension, $allowedExts) )
{
if ($_FILES["video_url"]["error"] > 0)
{
return $_FILES["video_url"]["error"];
}
else
{
if (file_exists("upload/" . $_FILES["video_url"]["name"]))
{
echo $_FILES["video_url"]["name"] . " already exists. ";
}
else
{
move_uploaded_file($_FILES["video_url"]["tmp_name"],
"upload/" . $_FILES["video_url"]["name"]);
echo "Stored in: " . "upload/" . $_FILES["video_url"]["name"];
return $_FILES["video_url"]["name"];
}
}}

Answer 1

i got it working.
//POST Video Reviews
public function actionCreate_video_review()
{
$allowedExts = array("jpg", "jpeg", "gif", "png", "mp3", "mp4", "wma","mkv");
$extension = pathinfo($_FILES['video_url']['name'], PATHINFO_EXTENSION);
if ( ($_FILES["video_url"]["type"] == "video/mp4")|| ($_FILES["video_url"]["type"] == "video/x-matroska")&& ($_FILES["video_url"]["size"] < 90000) && in_array($extension, $allowedExts) )
{
if ($_FILES["video_url"]["error"] > 0)
{
return $_FILES["video_url"]["error"];
}
else
{
if (file_exists("upload/" . $_FILES["video_url"]["name"]))
{
echo $_FILES["video_url"]["name"] . " already exists. ";
}
else
{
$model = new \app\models\VideoReview();
$model->video_url = $_FILES["video_url"]["name"];
$model->save();
move_uploaded_file($_FILES["video_url"]["tmp_name"],
\Yii::$app->basePath. '/web/uploads/' . $_FILES["video_url"]["name"]);
return $_FILES["video_url"]["name"];
}
}
}
else
{
return $_FILES["video_url"]["error"] ."Error";
}
}