Update one database table column with different values - php

Question

I want to update table with max three value and minimum with two values.How it would be possible to update table. I Get values from form, there are three fields for three students. Now all of them having same value when i update them in the database. Now i am trying this why. Dont know it works or not
See my page
$s1_name=$_POST['s1_name'];
$s2_name=$_POST['s2_name'];
$s3_name=$_POST['s3_name'];
$query="update students SET Name=:Name
WHERE ProjectID='$id'
";
try
{
$stmt = $conn->prepare( $query );
$stmt->bindParam(':Name', $s1_name);
$stmt->bindParam(':Name', $s2_name);
$stmt->bindParam(':Name', $s3_name);
$result = $stmt->execute();
$msg = "Record updated";
}
catch(PDOException $ex)
{
$msg = $ex -> getMessage();
}
}

Answer 1

It does not work this way. The way you are doing it will result in the query only updating it for $s3_name.
You will have to do your try/catch statement for each query:
<?php
$names = [$_POST['s1_name'], $_POST['s2_name'], $_POST['s3_name']];
$query = "update students SET Name=:Name WHERE ProjectID='$id'";
foreach ($names as $name) {
try
{
$stmt = $conn->prepare($query);
$stmt->bindParam(':Name', $name);
$result = $stmt->execute();
$msg = "Record updated";
}
catch(PDOException $ex)
{
$msg = $ex -> getMessage();
}
}