Помогите мне пожалуйста.

 

$category = mysql_real_escape_string(intval($_GET['cat']));

$stranica = mysql_real_escape_string(intval($_GET['str']));

if($category){

 

$chislo = 3;

 $result = mysql_query("SELECT * FROM `V_New` WHERE category='".$category."' ORDER BY `id` DESC");

 $num_rows = mysql_num_rows($result);

 $num_rows = ceil($num_rows/$chislo);

 if (isset($stranica)) {

 $nav = $stranica;

 }

 else {

 $nav = 0;

 }

 $nav = intval($nav);

 if($num_rows = '0'){echo '<a href="'.$PHP_SELF.'?str='.($nav-1).'&cat='.$category.'">-<<<-</a> ';} /*Вот

 if($num_rows = '1'){echo '<a href="'.$PHP_SELF.'?str='.($nav+1).'&cat='.$category.'">->>>-</a> ';}/* Вот

 for ($i=1; $i<=$num_rows; $i++) {

echo '<a href="'.$PHP_SELF.'?str='.$i.'&cat='.$category.'">'.$i.'</a> ';

 }

 else {

 echo '<span>'.$i.'</span> ';

 }

 }

 if (!isset($_GET['str'])) {

 $str = 0;

 }

 else {

 $str = $_GET['str']*$chislo - $chislo;

 }

 $results = mysql_query("SELECT `id`, `title`, `date`, `litcont` FROM `V_New` WHERE category='".$category."' ORDER BY `id` DESC LIMIT $str, $chislo");

 

 while($wiw_category = mysql_fetch_array($results)) {

echo "<br /><br /><a href='?life=".$wiw_category['id']."'><b>".$wiw_category['title']."</b></a>| ". $wiw_category['date']."<br /><br /><div style='color:#595959;'>".substr($wiw_category['litcont'],0,180)."</div>";

}

 }