Strange issue with timestamp update in MYSQL - php

Question

I have a strange issue i have come accross on a few sites i have built, but i am unable to find the problem, it seems so simple, when a user logs in to the site i update the timestamp for the column "member_login" to NOW() which works great, the only issue is, it also updates the "member_joined" column to the exact same time as the "member_login" timestamp but NOWHERE in the code do i tell it to update the "member_joined" column! the entire login script is fairly simple:
login.php
<?php
session_start();
include('includes/db_connection.php');
include('includes/functions.php');
?>
<?php
if (isset($_POST['submitLogin'])) {
$username = trim(strtolower($_POST['username']));
$password = trim(strtolower($_POST['password']));
if (empty($username) || empty($password)) {
include('includes/header.php');
include('includes/navbar.php');
stderr('Please fill in <b>both</b> login fields.');
include('includes/footer.php');
}
$memberInfo = DB::getInstance()->selectOne(
'
SELECT DISTINCT member_username, member_fees_paid, member_fees_paid_on
FROM `membership`
WHERE `member_username` = :member_username
AND `member_password` = :member_password',
[
'member_username' => $username,
'member_password' => $password
]
);
if (!count($memberInfo)) {
include('includes/header.php');
include('includes/navbar.php');
stderr('Sorry, username <b>and/or</b> password combination not found.');
include('includes/footer.php');
} else {
$_SESSION['member'] = $username;
if ($memberInfo['member_fees_paid'] === 'N') {
$payedOn = new \DateTime($memberInfo['member_fees_paid_on']);
$payedOn->setTime(0, 0, 0);
$monthAgo = new \DateTime('28 days ago');
$monthAgo->setTime(0, 0, 0);
if ($monthAgo > $payedOn) {
try {
DB::getInstance()->execute(
'
UPDATE `membership`
SET `member_fees_paid`= \'N\'
WHERE `member_username` = :member_username
AND `member_password` = :member_password',
[
'member_username' => $username,
'member_password' => $password
]
);
header('Location: my-account.php');
} catch (Exception $e) {
include('includes/header.php');
include('includes/navbar.php');
stderr($e->getMessage());
include('includes/footer.php');
}
}
}
try {
DB::getInstance()->execute(
'
UPDATE `membership`
SET `member_login` = NOW()
WHERE `member_username` = :member_username
AND `member_password` = :member_password',
[
'member_username' => $username,
'member_password' => $password
]
);
header('Location: my-account.php');
} catch (Exception $e) {
include('includes/header.php');
include('includes/navbar.php');
stderr($e->getMessage());
include('includes/footer.php');
}
}
}
?>
<?php
include('includes/header.php');
include('includes/navbar.php');
?>
<div class="panel panel-primary">
<div class="panel-heading">Login to your account.</div>
<div class="panel-body">
<form action="login.php" method="post" class="form-horizontal container-fluid" role="form">
<div class="row form-group">
<div class="col-sm-6 text-right">
<label class="control-label">Username:</label>
</div>
<div class="col-sm-6">
<input type="text" name="username" class="form-control" size="40" required="required"/>
</div>
</div>
<div class="row form-group">
<div class="col-sm-6 text-right">
<label class="control-label">Password:</label>
</div>
<div class="col-sm-6">
<input type="password" name="password" class="form-control" size="40" required="required"/>
</div>
</div>
<div class="row form-group">
<div class="col-sm-6 text-right">
<label class="control-label" style="display: inline-block;"> </label>
</div>
<div class="col-sm-6 text-right">
<button type="submit" name="submitLogin" class="btn btn-primary">Login</button>
</div>
</div>
</form>
</div>
<div class="panel-footer">Forgot <b>your password</b>? recover it here.</div>
</div>
<?php
include('includes/footer.php');
On a successful login we just update the timestamp for the "member_login" and redirect to the "my-account.php" page, which works as it should, but it keeps updating the "member_joined" colums the same as the "member_login" i cannot figure out why it is doing this, any help would be appreciated!

Answer 1

If your column member_joined is type timestamp, you might want to check that on update CURRENT_TIMESTAMP isn't being used - you can check this in a database reader such as phpMyAdmin, SequalPro, Heidi etc.
This will automatically update the datestamp to the current date/time.