Warning: session start() [function.session-start]: Cannot send session

[xbl01234]

Hi:
why my following code always give me some error as following:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/biznisfi/public_html/Search.php:1) in /home/biznisfi/public_html/Search.php on line 2

search.php

<?php
session_start();
?>
<?php
$url= $_SERVER['REQUEST_URI'];
$url=explode("/", $url);
$searchString=$url[2];
$currentpage=$url[4];
?>
<?php
include("conDatabase.php");
$limit=5;
$limitValue = $currentpage * $limit - ($limit);
$sql="select Subject as subject, link, MATCH (Subject,Content) AGAINST ('$searchString') from Thread";
$totalrowsresult = mysql_query($sql);
// process results
$totalrows = mysql_num_rows($totalrowsresult);
echo "<br> total rows are : " . $totalrows . "<br>";
$sql="select Subject as subject, link from Thread where MATCH (Subject,Content) AGAINST ('$searchString')LIMIT $limitValue, $limit";
$result=mysql_query($sql);
if (!$result){
  die ("Error processing request- check your query from search.php");
}
if(mysql_num_rows($result) == 0){
  echo("Nothing to Display!");
}
echo("<table>");
while($row = mysql_fetch_array($result)){
  echo("<tr><td>");
  echo ("<a href=");
  echo $row['link'];
  echo (">");
  echo $row['subject'];
  echo ("</a>");
  echo("</td></tr>");
}
echo("</table>");
$numofpages = $totalrows / $limit;
if(($totalrows % $limit) != 0)
  $numofpages = intval($numofpages) + 1;
  $pageL=$_SESSION['search_pageL'];
  $pageR=$_SESSION['search_pageR'];
if ($currentpage != 1){
  $pageprev=$currentpage-1;
  echo("<a href=\"/Search/$searchString/page/$pageprev/\">PRE </a>");
}
else{
  echo( "PREV ");
}
if($_SESSION['search_entry'] == 1){
  $_SESSION['search_entry']++;
 if($numofpages >= 7){
   $pageL=1;
   $pageR=7;
   $_SESSION['search_pageR']=$pageR;
   $_SESSION['search_pageL']=$pageL;
 }
 else{
   $pageL=1;
   $pageR=$numofpages;
   $_SESSION['search_pageR']=$pageR;
   $_SESSION['search_pageL']=$pageL;
 }
}
if(($_SESSION['search_entry'] != 1) && (($pageR-$currentpage) <= 1)) {
  if(($numofpages-$pageR) >= 3){
   $pageR = $pageR + 2;
   $_SESSION['search_pageR']=$pageR;
   if(($currentpage-$pageL)>=3){
     $pageL=$currentpage-3;
     $_SESSION['search_pageL']=$pageL;
   }
  }
 else{
   $pageR=$numofpages;
   $_SESSION['search_pageR']=$pageR;
  if(($currentpage-$pageL)>=3){
   $pageL=$currentpage-3;
   $_SESSION['search_pageL']=$pageL;
  }
 }
}
if(($_SESSION['search_entry'] != 1) && (($currentpage-$pageL) <= 1)) {
  if(($pageL-1)>=3){
    $pageL=$pageL-3;
    $_SESSION['search_pageL']=$pageL;
    if(($pageR-$currentpage)>=3){
     $pageR=$currentpage+3;
     $_SESSION['search_pageR']=$pageR;
    }
  }
  else{
   $pageL=1;
    $_SESSION['search_pageL']=$pageL;
    if(($pageR-$currentpage)>=3){
      $pageR=$currentpage+3;
      $_SESSION['search_pageR']=$pageR;
    }
  }
}
for($i =$pageL; $i <= $pageR; $i++){
  if( $i==$currentpage){
    echo($i. " ");
  }else{
    echo("<a href=\"/Search/$searchString/page/$i/\">)". $i . "</a>");
  }
}
if(($totalrows - ($limit*$currentpage )) > 0){
  $pagenext = $currentpage +1;
  echo("<a href=\"/Search/$searchString/page/$pagenext/\">NEXT</a>");
}
else{
  echo("NEXT");
}
mysql_free_result($result);
mysql_free_result($totalrowsresult);

[jatar_k]

is there a blank line before your first <?php

a blank line before the opening tag would be considered output and cause headers to be sent

[xbl01234]

you are right, there is white line before that.

Thanks a lot.