php do something with interval

[h2k41]

i have a form, say like this :\[code\]<form name="form1" action="" method="post"><input type="text" name="tfcari" /><input type="submit" name="btcari" /></form><?phpif (isset($_POST['btcari'])) {echo $_POST['tfcari']; ?>\[/code\]how to doing like this : \[quote\] click submit - echo text - wait for 5 seconds - echo text (automatically) - wait for 5 seconds - echo text (automatically) - ...\[/quote\]thanks all.