PHP/SQL Converting timestamp - php

Question

So I am working on a simple website and I ran into a problem. I have a subscription based website and I have a date expired for when their subscription ends. This all works well, but when I tried to display the expiration date I ran into problems. The first 3 lines are what i have been trying. It seems as if the timestamp isnt correctly being transferred from the database because when I did my test at the button, this displayed the correct date. The top 3 lines always give me this: 1970/01/01
// Get Expiration Date
// Always gives me 1970/01/01
$datexpire = "SELECT date-expire FROM users WHERE username='{$_SESSION['username']}'";
$timestamp = mysqli_query($link, $datexpire);
$date = date("Y/m/d",$timestamp);
//This works
$timestamp2 = 1537847863;
$date2 = date("Y/m/d",$timestamp2);
If anyone could help that would be much appreciated

Answer 1

i think your code should be something like
$datexpire = "SELECT date-expire FROM users WHERE username='{$_SESSION['username']}'";
$result = mysqli_query($link, $datexpire);
$row=mysqli_fetch_assoc($result));
$timestamp = $row['date_expire'];
$date = date("Y/m/d", $timestamp);
echo $date;
please check for column name.. if it is date-expire or date_expire ??? (dash or underscore ??)

Answer 2

mysqli_query returns a mysqli_result object or a boolean value.
You want to fetch a row from your given object, like so:
$datexpire = "SELECT `date-expire` FROM users WHERE username='{$_SESSION['username']}'";
$result = mysqli_query($link, $datexpire);
$row = mysqli_fetch_assoc($result);
$date = date("Y/m/d", $row["date-expire"]);