compare if date from database is bigger than current date - php

Question

I'm stuck on this one.
It sounds quite easy what I'm trying to accomplish, still I can't get it to work...
I have several user stored in a database. They can visit a page after login. But each user has an end date. So if this day has passed, he won't be able to see the page anymore and will be redirected to another page. But there is a different date for each user.
When an user enter his credentials, a $_SESSION is created that stores his login name. I need the sql to get the date from the specific user using this $_SESSION value.
What I have so far:
$sql="SELECT * FROM $tbl_name WHERE licentiehouder=$naamLicentiehouder";
$naamLicentiehouder = $_SESSION['doorsturen'];
$result=mysql_query($sql);
$row = mysql_fetch_row($result);
$mydate = $row['vervaldatum'];
$curdate=strtotime("now");
if($curdate <= $mydate && $_SESSION['doorsturen'] == 'userONE') {
header("Location: userONE.php");
} else if ($curdate <= $mydate && $_SESSION['doorsturen'] == 'userTWO') {
header("Location: userTWO.php");
} else if($curdate > $mydate) {
header("Location: extend_license.php");
}
So again, every user has it's own license, which will expire on an exact date. This date is stored in the database. So if userONE's logging in, $_SESSION value is set to userONE. sql reads this values and gets only the row that's matching this value. If today (current date) is bigger than the date stored (so his license is expired), he will be redirected to a page to extend his license. If not, he will be able to see his personal page.
Hope anyone can help?!

Answer 1

Your variable $naamLicentiehouder is undefined at the time you run your query. Try:
$naamLicentiehouder = $_SESSION['doorsturen'];
$sql="SELECT * FROM $tbl_name WHERE licentiehouder='$naamLicentiehouder'";
Also mysql_query(), and the like, are depreciated. Use mysqli. I prefer the Object Oriented approach, since it saves a lot of repetitive typing.
To clarify, the Object Oriented approach, on a separate restricted page we'll call connect.php:
<?php
// reusable db() function can be called inside other functions
function db(){
return new mysqli('host', 'username', 'password', 'database');
}
?>
Now on your other page:
<?php
include_once 'restricted/connect.php'; $db = db();
if($db->connect_error)die("Connection Failure: {$db->connect_error}");
$naamLicentiehouder = $_SESSION['doorsturen']; // I would shorted this variable
if($result = $db->query("SELECT vervaldatum FROM your_table_name WHERE licentiehouder='$naamLicentiehouder'")){
if($result->num_rows > 0){
$row = $result->fetch_object(); $mydate = $row->vervaldatum;
$curdate = strtotime('now');
if($curdate <= $mydate && $naamLicentiehouder === 'userONE'){
header('LOCATION: userONE.php'); die;
}
elseif($curdate <= $mydate && $naamLicentiehouder === 'userTWO'){
header('LOCATION: userTWO.php'); die;
}
elseif($curdate > $mydate){
header('LOCATION: extend_license.php'); die;
}
else{
die('Date Issue.');
}
}
else{
die('No results were found.');
}
}
else{
die('Error :'.$db->error);
}
$result->free(); $db->close();

Answer 2

You seem to be getting a timestamp with $curdate=strtotime("now"); What you are getting from the database is likely (although I can't be sure) a date, not a timestamp. Use strtotime on it too:
$mydate = strtotime($row['vervaldatum']);
That should do it.