Notice: Undefined variable

<?php
$datesunday = date("d", strtotime("Sunday"));
$datemondey = $datesunday-6;
$file = file_get_contents("xmltv.xml");
preg_match_all('#<programme(.*?)channel=\"1\">\s*(.*?)<\/title>#si', $file, $programme);
$count=count($programme[0]);
$time = '#start=\"(.*?)\" stop=\"#si';
$title = '#<title lang=\"ru\">(.*?)#si';
$w=0;
$weeks = array(
0 => "Понедельник   ",
1 => "Вторник   ",
2 => "Среда   ",
3 => "Четверг   ",
4 => "Пятница   ",
5 => "Суббота   ",
6 => "Воскресенье   ",
7 => "Понедельник   "
);
for ($i=0; $i<$count;$i++){
$t=$programme[1][$i];
$tt=$programme[2][$i];
preg_match_all($title, $tt, $titout);
preg_match_all($time, $t, $tout);
   $month = substr($tout[0][0],11,2);
   $day = substr($tout[0][0],13,2);
   $hour = substr($tout[0][0],15,2);
   $minute = substr($tout[0][0],17,2); 
 
if (($oldday<$day)and($day>=$datemondey)){
    if($w!=0){ echo "<BR>";}
    echo  '<font color="blue">'.$weeks[$w].' ('.$day.'.'.$month.' )</font><BR>';
    echo "<BR>";
    echo iconv("CP1251","UTF-8", htmlspecialchars($hour)).":".$minute." ";   
    echo "   ".iconv("CP1251","UTF-8", $titout[1][0]);
    echo "<BR>";
       
      
    $w++;
    }
    else {    
    if ($day>=$datemondey){
    echo iconv("CP1251","UTF-8", htmlspecialchars($hour)).":".$minute." ";
    echo "   ".iconv("CP1251","UTF-8", $titout[1][0]);
    echo "<BR>";
    }   }
   $oldday=$day;   
   $i++; 
}
 
?>