Comparing timestamp to current time from database
<p>I need to test current time against a datetime from database, if it has been 30 mins then execute code, if not then dont. This is where I am at and I am stuck:</p>

<pre><code>$link = mysqli_connect("hostname", "username", "password", "database");
$q = "SELECT id FROM dwCache ORDER BY id DESC LIMIT 1";
$qu = mysqli_query($link, $q);

while($row=mysqli_fetch_array($qu, MYSQL_ASSOC)){
        $id = $row['id'];
        $cache = $row['cache'];
        $timest = $row['time'];
    }

$newTime = 
$difference = $timest
if($timest &gt;= )
</code></pre>

<p>As you can see towards the bottom I lose it as I am not sure what to do.</p>

<p>$timest returns : 2013-02-01 12:36:01 as the format Y-m-d h-i-s</p>

<p>Apologies on double post, other deleted.</p>
