Dynamically Loading Form Fields in PHP

You can create a table in your database, a column for the input type, a column for the name tag, and a column for the privilege of who will use this field.

Table (input_tb) will look like this:

input_id | input_type | name_tag |   label  |  user_type
---------+------------+----------+----------+-------------
    1    |    text    |   name   |   Name   |     1 /* ASSUMING 1 IS FOR LEVEL 1 PROFILE */
    2    |   number   |   age    |    Age   |     1
    3    |    file    |  picture |  Picture |     1

Assuming your user_tb looks like this:

user_id | user_type
--------+-----------
   1    |     1 /* MEANS THAT USER 1 HAS A LEVEL 1 PROFILE */

So, when a user accessed the form, you fetch the corresponding rows in the input_tb (assuming you store the user_type on a session below):

$stmt = $con->prepare("SELECT input_id, input_type, name_tag, label FROM input_tb WHERE user_type = ?");
$stmt->bind_param("i", $_SESSION["user_type"]);
$stmt->execute();
$stmt->bind_result($inputid, $inputtype, $nametag, $label);
while($stmt->fetch()){
    echo $label.': <input type="'$inputtype..'" name="'.$nametag.'"><br>';
}
$stmt->close();

Then, the information will be stored in another table:

Example of info_tb, using a single sample user here:

info_id | user_id | input_id |   input_data 
--------+---------+----------+-----------------
   1    |    1    |    1     |    Richard      /* User 1's Name */
   2    |    1    |    2     |       18        /* User 1's Age */
   3    |    1    |    3     | profile_pic.png /* User 1's Picture */

Reminder:

• You can also consider having a condition to your code, when an input field is a textarea
• Put a condition, when an input field is a file type. It has to go the process of uploading before inserting the corresponding file name to the database