How to get attribute values of an object stored in $_SESSION? - php

Question

I have this code that store a "student" object in $_SESSION:
if(isset($_POST["name"]) && isset($_POST["note"]) && isset($_POST["year"]))
{
$nom = $_POST["name"];
$note = $_POST["note"];
$session = $_POST["year"];
$vec = array("name" => $name, "note" => $note, "year" => $year);
$_SESSION["students"][] = $vec;
echo "The student has been added.<br><br>";
}
Then I have this code in another page:
function calculateAverage()
{
$av = 0;
$count = 0;
foreach($_SESSION['students'] as $student)
{
$av = $av + $student["note"];
$count = $count + 1;
}
return $av / $count;
}
function bestNote()
{
//$best = array_search(max())
return $best;
}
function worstNote()
{
$worst = min(array_search(["note"], $_SESSION['students']));
return $worst;
}
if(isset($_SESSION['students']))
{
echo "The average note of the group is = " . calculateAverage() . "\n";
echo "The one with the best note is " . bestNote()["name"] . " is " . hauteNote()["note"] . " points.\n";
echo "The one with the worst note is " . worstNote()["name"] . " with " . basseNote()["note"] . " points.\n";
}
As you can see, it is not finished. What I want to do is to be able to get the note of a student that is stored in $_SESSION["students"]. How can I do this?
Thanks for answers.

Answer 1

you can access the stored values within a nested array like so:
$studentNote = $_SESSION["students"][YourActiveStudent]["note"];
However, you are currently not adding but overwriting data. Use array_push() to add data to an array (your students).
And when adding a student to the array, make sure to give it a name to make it associative so you can simply "call a student":
$_SESSION["students"][$nom] = $vec;
this way, if the $nom was "Max", you could say
$_SESSION["students"]["Max"]["note"]
to get Max's note (BTW, I assume you are talking about grades or marks, rather than notes?)