Session variables between pages
On the page, two variables are passed in the URL.
On the second page, these variables are initialized. On submit, a new page opens. The problem is here, I cannot restore the session variables.
The script indicates an error (undefined index).
Thanks for the help in advance.
Here's the code:
First page :
<?php
$requete_cours="SELECT COURS.SIGLE AS SIGLE, ANNEE FROM COURS, MODULE WHERE COURS.ID_MODULE = MODULE.ID_MODULE and ID_PERSONNE = $userid";
//$requete_cours;
$res = mysqli_query($cxn, $requete_cours);
echo (mysqli_error ($cxn));
while($ligne = mysqli_fetch_array($res)){
echo '<a href="professeur_absences.php?classe='.$ligne['ANNEE'].'&cours='.$ligne['SIGLE'].'">';
echo $ligne['ANNEE'].' - '.$ligne['SIGLE'].'</a>';
echo '<br/>';
}
?>
Second page :
$_SESSION['classe'] = $_GET['classe'];
$_SESSION['cours'] = $_GET['cours'];
Third page :
if(isset($_REQUEST['afficher'])){
$semaine = $_REQUEST['semaine'];
$classe = $_SESSION['classe'];
$cours = $_SESSION['cours'];
$_SESSION['semaine'] = $semaine;
$requete_cours_id = "SELECT ID_COURS FROM COURS WHERE SIGLE = $cours";
//echo $requete_cours;
$res = mysqli_query($cxn, $requete_cours_id);
echo (mysqli_error ($cxn));
$coursId = mysqli_fetch_array($res);
+3
source to share
1 answer
You must initialize your session by calling session_start()
at the beginning of each script. Make sure this is always the first line as it session_start()
sends headers.
Find some examples of basic usage in the PHP docs .
+4
source to share