Php and random

Below is something simple i created where everytime a page reloads a box will either be black or white. what i want to create is for this to automaticly happen without a refresh. for it to go black-white-black-white etc. reading up on php its telling me that the code is executed before the page loads. so i dont think its possible. Is it possible to do what im trying to accomplish?

thanks

<?
$black="bgcolor='black'";
$white="bgcolor='white'";
$name=1;
$name2=2;
$random=rand($name,$name2);

if($random==1)
{

Print"

<TABLE BORDER=1>
<TR>
  <TD $black width='25' height='25' value='value' name='name'></TD>
  
</TR>

</TABLE>";

}else{

Print"

<TABLE BORDER=1>
<TR>
  <TD $white width='25' height='25' value='value' name='name'></TD>
  

</TABLE>";

}
?>

PHP:

 

Y your are doing it with PHP then? Create a random number in JS, and use function setTimeOut, Following is hint

<script>
function changeColor()
{
var num = sometechniqueheretogeneraterandomnumber;
if(num == 1)
    var color = "ffffff";
else
    var color = "000000";

document.getElementById("mytd").style.background = color;
}

setTimeout("changeColor()", 5000);
</script>

<TABLE BORDER=1>
<TR>
  <TD id="mytd" width='25' height='25' value='value' name='name'></TD>
  
</TR>

</TABLE>

Code (markup):

I have not tested it, but it shud work.

 

i dont know javascript but it doesnt look too difficult. thanks

 

Please add to my rep, if that post helped you

 

Here is a more advanced, yet easy to use random string generator:

function randChar($x, $r) {
	$rand ='';
	for ($a = 0; $a < $x; $a++) {
		$b = rand(0, strlen($r) - 1);
		$rand .= $r[$b];
	}
	return $rand;
}

PHP:

The following allows specifying which characters should be used to generate the string

echo randChar(5, '1234567890');

PHP:

"5" represents the number of chars that the string should contain.
"1234567890" is the character selection for the string to be generated from.

 

pm me how and its done

 

I think you have done it