key word search using php

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tahir_mcs
Forum Newbie
Posts: 3
Joined: Fri Jan 08, 2010 5:09 am

key word search using php

Post by tahir_mcs »

hi
every body should be fine ...................

i want to make the keyword search like google show the result indexing for example when i enter a string for search it match with database and show the most close result at the top and upto next matching and so on.......................i have some code here and want some help to improve it

--------------------html page----------------
<html>
<head>
<title>designplace.org search script</title>
<meta name="author" content="Steve R, http://www.designplace.org/">
</head>
<!-- © http://www.designplace.org/ -->
<body>

<form name="form" action="search.php" method="get">
<input type="text" name="q" />
<input type="submit" name="Submit" value="Search" />
</form>



<!-- © http://www.designplace.org/ -->

</body>
</html>
----------------------php----------------------
<html>
<head>
<title>designplace.org search script</title>
<meta name="author" content="Steve R, http://www.designplace.org/">
</head>
<!-- © http://www.designplace.org/ -->
<body>


<?php

// Get the search variable from URL

$var = $_GET['q'] ;
$trimmed = trim($var); //trim whitespace from the stored variable

// rows to return
$limit=10;

// check for an empty string and display a message.
if ($trimmed == "")
{
echo "<p>Please enter a search...</p>";
exit;
}

// check for a search parameter
if (!isset($var))
{
echo "<p>We dont seem to have a search parameter!</p>";
exit;
}

//connect to your database ** EDIT REQUIRED HERE **
$con = mysql_connect("hostname","user","password"); //(host, username, password)

//specify database ** EDIT REQUIRED HERE **
echo mysql_select_db("searchdb",$con) or die("Unable to select database"); //select which database we're using

// Build SQL Query
echo $query = "select * from tblvalue where text like \"%$trimmed%\"
order by text"; // EDIT HERE and specify your table and field names for the SQL query

$numresults=mysql_query($query);
$numrows=mysql_num_rows($numresults);

// If we have no results, offer a google search as an alternative

if ($numrows == 0)
{
echo "<h4>Results</h4>";
echo "<p>Sorry, your search: "" . $trimmed . "" returned zero results</p>";

// google
echo "<p><a href=\"http://www.google.com/search?q="
. $trimmed . "\" target=\"_blank\" title=\"Look up
" . $trimmed . " on Google\">Click here</a> to try the
search on google</p>";
}

// next determine if s has been passed to script, if not use 0
if (empty($s)) {
$s=0;
}

// get results
$query .= " limit $s,$limit";
$result = mysql_query($query) or die("Couldn't execute query");

// display what the person searched for
echo "<p>You searched for: "" . $var . ""</p>";

// begin to show results set
echo "Results";
$count = 1 + $s ;

// now you can display the results returned
while ($row= mysql_fetch_array($result)) {
$title = $row["text"];
$arr_pos=strallpos($title,$var);

$myarray[]= $arr_pos."-".$row["ID"];
echo "$count.)&nbsp;$title<br>" ;
$count++ ;
}

print_r($myarray);
$currPage = (($s/$limit) + 1);

//break before paging
echo "<br />";

// next we need to do the links to other results
if ($s>=1) { // bypass PREV link if s is 0
$prevs=($s-$limit);
print "&nbsp;<a href=\"$PHP_SELF?s=$prevs&q=$var\"><<
Prev 10</a>&nbsp&nbsp;";
}

// calculate number of pages needing links
$pages=intval($numrows/$limit);

// $pages now contains int of pages needed unless there is a remainder from division

if ($numrows%$limit) {
// has remainder so add one page
$pages++;
}

// check to see if last page
if (!((($s+$limit)/$limit)==$pages) && $pages!=1) {

// not last page so give NEXT link
$news=$s+$limit;

echo "&nbsp;<a href=\"$PHP_SELF?s=$news&q=$var\">Next 10 >></a>";
}

$a = $s + ($limit) ;
if ($a > $numrows) { $a = $numrows ; }
$b = $s + 1 ;
echo "<p>Showing results $b to $a of $numrows</p>";



function strallpos($haystack,$needle,$offset = 0)
{

$result = array();
for($i = $offset; $i<strlen($haystack); $i++){
$pos = strpos($haystack,$needle,$i);
if($pos !== FALSE){
$offset = $pos;
if($offset >= $i){
$i = $offset;
//$result[] = $offset;
$result = $offset;
}
}
}
return $result;
}


?>

<!-- © http://www.designplace.org/ -->

</body>
</html>
User avatar
manohoo
Forum Contributor
Posts: 201
Joined: Wed Dec 23, 2009 12:28 pm

Re: key word search using php

Post by manohoo »

Read MySQL's SOUNDS LIKE http://dev.mysql.com/doc/refman/5.0/en/ ... ounds-like and SOUNDEX http://dev.mysql.com/doc/refman/5.0/en/ ... on_soundex

Very easy to implement, but there are limitations (English words only)

It might not be exactly what you are looking for, but it's better than nothing.
Charles256
DevNet Resident
Posts: 1375
Joined: Fri Sep 16, 2005 9:06 pm

Re: key word search using php

Post by Charles256 »

Also please read viewtopic.php?f=1&t=21171 .
tahir_mcs
Forum Newbie
Posts: 3
Joined: Fri Jan 08, 2010 5:09 am

Re: key word search using php

Post by tahir_mcs »

thanks for reply i have read the article but it may not be helpful according to my requirement
is there any body that can be help me about this.................?
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