Question

When someone visits X page for the first time, I insert a new row into the table with the current unix time()stamp.

I want to insert new rows, for that user, every 24 hours.. so for example:

Example A) Bob, goes to my site, it inserts a row.. 12 hours later, Bob comes back, it doesn’t insert a new row as 24 hours haven’t passed yet.

Example B) Bob, goes to my site, it inserts a row.. 24 hours later, Bob comes back, it DOES insert a new row as 24 hours HAVE passed.

I am toying around with this, but cannot think if this is right or not due to my brain being fried.

$time = time();
$difference = 86400;
$timedifference = $time + $difference;

When inserting the row:

mysql_query("INSERT INTO `logs` (`time`, `who`, `site`, `type`) 
VALUES('" . $timedifference . "', '" . $ip . "', '" . $rid . "', 'out') ") 
or die(mysql_error()); 

When checking to see if it has been 24 hours or more:

mysql_query("SELECT * FROM `logs` 
WHERE `time` < '" . time() . "' AND `type` = 'out' 
AND `site` = '" . $rid . "' AND `who` = '" . $ip . "'");

Can somebody please tell me if it’s right?

Answer 1

Here is what I’ve come up with.. it seems to work:

//log check
$ip = ip2long($_SERVER['REMOTE_ADDR']);
$time = time(); //current time
$difference = 86400; //one day in seconds
$timedifference = $time + $difference; //time difference
$logQ = mysql_query("SELECT * FROM `logs` WHERE `time` > '" . time() . 
        "' AND `type` = 'out' AND `site` = '" . $id . 
        "' AND `who` = '" . $ip . "'");
$logR = mysql_num_rows($logQ);
if ($logR <= 0){
  mysql_query("INSERT INTO `logs` (`time`, `who`, `site`, `type`) VALUES('" . 
  $timedifference . "', '" . $ip . "', '" . $id . "', 'out') ") or 
  die(mysql_error());  
}