Değişkenler Eklenmiyor?

<?
mysql_connect("localhost","xxx","xx");

mysql_select_db("xxxx");

mysql_query("SET NAMES 'utf8'");

mysql_query("SET CHARACTER SET utf8");

mysql_query("SET COLLATION_CONNECTION = 'utf8_general_ci'");

function turkce($kelime) {
$tr = array('s','S','i','I','g','G','ü','Ü','ö','Ö','Ç','ç');
$eng = array('s','S','i','I','g','G','u','U','o','O','C','c');
$kroyumben = str_replace($tr,$eng,$kelime);
$kroyumben = eregi_replace('[^0-9A-Za-z]',"-",$kelime);
$kroyumben = str_replace('--','-',$kelime);
return $son;
 }
$data=file_get_contents('http://xxxx.com/=15');
preg_match_all("'<div>(.*?)</div>'si",$data, $adcek);

for ($a=0; $a<count($adcek[1]); $a++) 
{
$kelime=$adcek[$i][1];
$ad=turkce($kelime);
 

        $sql = mysql_query("insert into tag (tr,baslik,tarih) VALUES ('$ad2','$ad',now())");

     echo $adcek[1][$a]." <font color=\"#0000CC\">Eklendi</font><br />";
      }
?>

<?
mysql_connect("localhost","xxx","xx");

mysql_select_db("xxxx");

mysql_query("SET NAMES 'utf8'");

mysql_query("SET CHARACTER SET utf8");

mysql_query("SET COLLATION_CONNECTION = 'utf8_general_ci'");

function turkce($kelime) {
    $tr = array('s','S','i','I','g','G','ü','Ü','ö','Ö','Ç','ç');
    $eng = array('s','S','i','I','g','G','u','U','o','O','C','c');
    $kroyumben = str_replace($tr,$eng,$kelime);
    $kroyumben = eregi_replace('[^0-9A-Za-z]',"-",$kelime);
    $kroyumben = str_replace('--','-',$kelime);
    return $son;
}
$data=file_get_contents('http://xxxx.com/=15');
preg_match_all("'<div>(.*?)</div>'si",$data, $adcek);

for ($a=0; $a<count($adcek[1]); $a++) 
{
    $kelime = $adcek[$i][1];
    $tr = turkce($kelime);
    $sql = mysql_query("insert into tag (tr,baslik,tarih) VALUES ('$tr','$kelime',now())");
    echo $adcek[1][$a]." <font color=\"#0000CC\">Eklendi</font><br />";
}
?>

<?
mysql_connect("localhost","xxx","xx");

mysql_select_db("xxxx");

mysql_query("SET NAMES 'utf8'");

mysql_query("SET CHARACTER SET utf8");

mysql_query("SET COLLATION_CONNECTION = 'utf8_general_ci'");

function turkce($kelime) {
    $tr = array('s','S','i','I','g','G','ü','Ü','ö','Ö','Ç','ç');
    $eng = array('s','S','i','I','g','G','u','U','o','O','C','c');
    $kroyumben1 = str_replace($tr, $eng, $kelime);
    $kroyumben = eregi_replace('[^0-9A-Za-z]',"-",$kroyumben1);
    $son= str_replace('--','-', $kroyumben);
    return $son;
}
$data=file_get_contents('http://xxxx.com/=15');
preg_match_all("'<div>(.*?)</div>'si",$data, $adcek);

for ($a=0; $a<count($adcek[1]); $a++) 
{
    $kelime = $adcek[$i][1];
    $tr = turkce($kelime);
    $sql = mysql_query("insert into tag (tr,baslik,tarih) VALUES ('$tr','$kelime',now())");
    echo $adcek[1][$a]." <font color=\"#0000CC\">Eklendi</font><br />";
}
?>

 <?
mysql_connect("localhost","xxx","xx");

mysql_select_db("xxxx");

mysql_query("SET NAMES 'utf8'");

mysql_query("SET CHARACTER SET utf8");

mysql_query("SET COLLATION_CONNECTION = 'utf8_general_ci'");

function turkce($kelime) {
    $tr = array('s','S','i','I','g','G','ü','Ü','ö','Ö','Ç','ç');
    $eng = array('s','S','i','I','g','G','u','U','o','O','C','c');
    $kroyumben1 = str_replace($tr, $eng, $kelime);
    $kroyumben = eregi_replace('[^0-9A-Za-z]',"-",$kroyumben1);
    $son= str_replace('--','-', $kroyumben);
    return $son;
}
$data=file_get_contents('http://xxxx.com/=15');
preg_match_all("#<div>(.*?)</div>#si",$data, $adcek);

for ($a=0; $a<count($adcek[1]); $a++) 
{
    $kelime = $adcek[1][$i];
    $tr = turkce($kelime);
    $sql = mysql_query("insert into tag (tr,baslik,tarih) VALUES ('$tr','$kelime',now())");
    echo $adcek[1][$a]." <font color=\"#0000CC\">Eklendi</font><br />";
}
?>

$kelime = $adcek[1][$i];

$kelime = $adcek[1][$a];