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[SOLVED] adding 1 to a value each time something happens?


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I have a usertable which has a field timeslogged so how do i write it so that each time this is activated it updated has 1 added to it.?


$DB_site->query("UPDATE tbluserdetails set logged= 'Y', dtlogged='now()', timeslogged='????'   where username='$username'");


Also is there anyway to reset the value of a field every 24 hours automatically?

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mm this script isn't actually working if their is  apictur it still displays it but if there isn't it wont display anything in the else { section when i view the page directly showpic it gives me the error


Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/hmtcompa/public_html/user/showpic3.php on line 6


if their is no image won't show anything even something simple.



$query = "SELECT thumbnail4,thumbnailtype4 FROM zloads where intProductID=".$_GET['adid'];
$result = mysql_query($query);
  if (mysql_num_rows($result) > 0) {
  $data = mysql_result($result,0,"thumbnail4"); 
  $type = mysql_result($result,0,"thumbnailtype4"); 
  Header( "Content-type: $type");
  print $data; 


print hello;


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