How to pass POST parameters in a url - php

Question

Is it possible to upload images/files by sending the POST or REQUEST, parameters in the URL without HTML content?
I created a PHP file that gets a image from my someone, stores that file into the database, and a in a folder on my computer. It works fine but what I want to do now is remove the html content and only allow someone to send the images/files via the URL. I tried using $_GET but I received a lot of errors. I also researched this and read that only $_POST will work.
Here is my PHP source code with HTML but keep in mind, "I want the page blank and the only way for someone to send the images/files is through URL".
PHP:
if(isset($_POST['submit'])){
if(#getimagesize($_FILES['image']['tmp_name']) ==FALSE){
// Select an image
echo "Please select an image.";
}
else{
// THE PATH TO STORE THE UPLOAD IMAGE
$target = "images/".basename($_FILES['image']['name']);
//CONNECT TO DATABASE
$db = mysqli_connect("localhost", "root", "");
mysqli_select_db($db, "magicsever");
if(mysqli_connect_error()){
die ("Database connection error");
}
//GET ALL THE SUBMITTED DATA
$image = $_FILES['image']['tmp_name'];
$name = $_FILES['image']['name'];
//Store te submitted data to database
$sql = "INSERT INTO image_test (name, image)VALUES ('$name','$image')";
$query = mysqli_query($db, $sql);
//Now lets move the uploaded image into the folder
$nullResult = array();
$nullResult['Image'] = (move_uploaded_file($_FILES['image']['tmp_name'], $target))? "Successful": "Unsuccessful";
echo json_encode($nullResult);
}
}
HTML:
<form action="index.php" method="post" enctype="multipart/form-data">
<input type="file" name="image">
<br></br>
<input type="submit" name="submit" value="Upload">
</form>

Answer 1

$_POST['']; Parameters come from the usually the form that has the method set to POST, like yours has, that input type you have (file, named image) will be returned has $_POST['image'], $_REQUEST on the other hand is the "GET" method, it works in the same way, the only difference is it's not secure and it comes in the url. I would recommend using POST to be honest. Also use PDO because your code is vulnerable to SQL injection. (mentioned by Alex Howansky)