How to pass an random variable between php pages using $_SESSION variable? - php

Question

I am trying to use variables(dates) queried in a php page then placed in $_SESSION, in another page to perform another query.
I will only use one date from that session array. which is that one i clicked on its link tag.
Is there an action that should be performed onclick of that link?
Here is my php, first page it creates the $_session variables and create the links.
The second page it is supposed to print the value i clicked. but it does not.
oldentries.php:
<?php
$query = "SELECT DISTINCT Tdate FROM titletable";
$result = mysqli_query($conn, $query);
if(mysqli_num_rows($result) > 0 )
{
while($row = mysqli_fetch_assoc($result))
{
$_SESSION[$row["Tdate"]]= $row["Tdate"];
echo ''.$_SESSION[$row["Tdate"]].'<br>';
}
}
else
{
echo "No Results in the database!";
}
?>
content.php
<?php
$datetable = $_SESSION[$row["Tdate"]];
echo "$datetable";
$query = "SELECT table_name FROM information_schema.tables where table_schema='council_db'";
?>

Answer 1

Your $_SESSION array is keyed by the result of the SQL query. In your content.php the $row variable is not available. In cases like this it's probably better to pass variables between pages with a query parameter rather than the session.
...
while($row = mysqli_fetch_assoc($result))
{
echo ''.$row["Tdate"].'<br>';
}
...
Then in content.php you can access it with $_GET
$datetable = $_GET["Tdate"];