How to do site search in a website? for example if we search a keyword in search box of the daniweb it will give the result from daniweb site only. like that i want to do in my website.

Do you want to build your own, or do you want to use Google Custom Search (looks like this is what DW is using) ?

commented: Helpful Post +6

The following is a PHP-script hich will search the folder it itself is placed in plus all subfolders:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Find</title>
<link rel="stylesheet" href="lind.css" type="text/css">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name='description' content='' />
<meta name='keywords' content=''>
</head>
<body>
<h2>Search the files</h2>
<?php 
$dennefil=$_SERVER["PHP_SELF"];

if (isset($_REQUEST['handling'])){
$handling=$_REQUEST["handling"];}
if (isset($_REQUEST['ordet'])){
$ordet=$_REQUEST["ordet"];}
if ($ordet==""){
$ordet="xxx";}
if (isset($_REQUEST['ordetb'])){
$ordetb=$_REQUEST["ordetb"];}


//--------------- funktioner
function find($mappe){
global $ordet, $ordet2, $ordetb, $ordetb2;
//echo "<b>$mappe</b><br />";
$sti=opendir($mappe);
while ($filnavnet=readdir($sti)){

$type=filetype($mappe."/".$filnavnet);

if ($type=="file"  && $filnavnet !="index.php" && $filnavnet !="tiny.php" && $filnavnet !=".htpasswd" && $filnavnet !=".htaccess" && $filnavnet !="find.php") {

find2($mappe."/".$filnavnet); }
elseif ($type=="dir" && $filnavnet !=".." && $filnavnet !="." && $filnavnet !="tiny_mce" && $filnavnet !="billeder") {

find("$mappe/$filnavnet"); }

} // while
closedir($sti);
}

// ------------- slut på find()

// find2()

function find2($filnavnet) {

global $ordet, $ordet2;

$f=fopen($filnavnet,"r");
$teksten=fread($f, filesize($filnavnet));
fclose($f);
$teksten=stristr($teksten,"<body");
$teksten=strip_tags($teksten,"<p>");
$teksten=explode("<",$teksten);

for ($i=0; $i<count($teksten); $i++) {

if (
(eregi($ordet,$teksten[$i]) OR eregi($ordet2,$teksten[$i]))
) 
{

echo "<br><a href=\"$filnavnet\">$filnavnet</a>:<br />";
$strengen=stristr($teksten[$i],">");
$strengen=substr($strengen,1,strlen($strengen));
$strengen=str_replace($ordet,"<span style='background:rgb(127,255,212)'>$ordet</span>",$strengen);
$strengen=str_replace($ordet2,"<span style='background:rgb(0,220,255)'>$ordet2</span>",$strengen);
echo $strengen."<br>";

}
}

} // -------------------------slut på function


// ------- søgeformularen

echo <<<SLUT
<form name='form' action="$dennefil" method="post">
Enter text: &nbsp;
<input type="text" name="ordet">
&nbsp;&nbsp;
<input type="submit" name=handling value="Find">
</form>
<script language='JavaScript' type='text/javascript'>
//<!--
document.form.ordet.focus()
//-->
</script>

SLUT;

// ----------------- søg i teksterne

if ($handling== "Find") {
if (isset($ordet)){
//$ordet=strip_tags($ordet);
echo "<br><b>Søgning på: \"$ordet\"";
$ordet2=htmlentities($ordet);
}

echo "</b><br><br>";

$mappe=".";

find($mappe);
}
 ?>
</body>
</html>

It was originally made in Danish, but I think that will hardly be a problem.