Auto open site lists

// Using: Iframe and Refresh Meta Tag

<?php
    $arrURL = array(
        "http://codjng.blogspot.com/"
    );
    $totalURL = count($arrURL);

    $index = $_GET["index"];
    if ($index == "") $index = 0;
    $strURL = $arrURL[$index];
    
    $nextIndex = $index + 1;
    
    $nextURL = $arrURL[$nextIndex];
    
    echo "$index: $strURL => $nextIndex: $nextURL";
    if ($nextIndex <= $totalURL - 1) {
        echo '<meta http-equiv="refresh" content="45;url=' . "?index=" . $nextIndex . '">';
    } else {
        echo "Stop!";
    }
    echo '<iframe src ="' . $strURL . '" width="100%" height="100%">IFrame?</iframe>';
?>