<?php
$rand = rand(1,5);
if($rand == 1){
echo'index1.html';
header("location:index1.html");
}elseif($rand == 2){
echo'index2.html';
header("location:index2.html");
}elseif($rand == 3){
echo'index3.html';
header("location:index3.html");
}elseif($rand == 4){
echo'index4.html';
header("location:index4.html");
}elseif($rand == 5){
echo'index5.html';
header("location:index5.html");
}
?>