Enter data to a MySql database with PHP - php

Question

I have a MySql database which has users and each user gets a grade see below:
ID NAME GRADE
1 Sean 10
2 Sarah 15
3 Seo 12
4 Ste 32
Basically, I want to be able to dynamically print out whats stored in the database and add a text input box which enables me to enter in grades which are stored for each individual person. I then want this grade to be stored in the database for the user. Is this possible?
I have code which prints out the users but doesn't include a text box
<table style="width:50%" style = "background-color: transparent;">
<tr>
<th>ID</th>
<th>NAME</th>
<th>GRADE</th>
</tr>
<?php
$sql = "SELECT id, name, grade FROM students";
$result = $conn -> query ($sql);
if($result -> num_rows >0){
//output data of each row
while($row = $result -> fetch_assoc()){
?>
<tr>
<td> <?php echo $row["id"] ?> </td>
<td> <?php echo $row["name"] ?> </td>
<td> <?php echo $row["grade"] ?> </td>
</tr>
?>
</table>

Answer 1

Research a bit on HTML forms here
HTML Forms
You can either use post or get methods for the form to send the values to PHP.
After you have set up your form you can simply use the variables $_GET[formvariable] if you are using get or
$_POST[formvariable] if you are using post.
You can then use mysql to update values in the database when the form is submitted.