alapimba Posted November 5, 2009 Share Posted November 5, 2009 Hello i have a div on my site that i want to reload 10 in 10 seconds. How can i do that? the div content is this: <div id="load_tweets"><p class="style1"><?php echo $row_Recordset3['conselhos_txt']; ?></p></div> That recordset has: $query_Recordset3 = "SELECT * FROM conselhos ORDER BY RAND()"; So i just need to print a random quote from my database 10 in 10 seconds. anyone to help me? Thanks Quote Link to comment Share on other sites More sharing options...
abazoskib Posted November 5, 2009 Share Posted November 5, 2009 That is not a very efficient way to do this, and RAND() is known to cause performance problems. It actually depends on your dataset, the larger the data the slower RAND() becomes. If I had a huge dataset of quotes, I would set up a cron job to generate a file of 30 or so quotes every half hour, then cycle through those randomly. To the user it will look completely random each time, but to you it means a savings of (n-1) database hits per half hour where n = page loads during that time. Quote Link to comment Share on other sites More sharing options...
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