CODEWITHSUNDEEP
phpmysqlfull-text-searchfull-text-indexing
buggytuf
buggytuf

Reputation: 69

How to make a full text search engine with php and mysql?

I have created a php search engine by using an open source code. I have created a database and a table with 5 columns:

title, description, keywords, link, date

The code I'm using is the php code below:

<?php
    $keywords = $_GET ['input'];        
     $keywords = "Led Zeppelin";
$words = explode(" ",$keyword);

foreach ($words as $w) {
    $keyword_parts .= "+" . $w ." ";
}
$keyword_parts = substr($keyword_parts,0,-1);
$query = "SELECT
          *,
          MATCH (keywords,title) AGAINST ('" . $keywords . "') as score
          FROM search
          WHERE MATCH (keywords,title) AGAINST ('" . $keyword_parts . "' IN BOOLEAN MODE)
          ORDER BY score DESC";

    //connect
    mysql_connect ("localhost", "root", "password");
    mysql_select_db("intranet");

    $query = mysql_query($query);
    $numrows = mysql_num_rows ($query);
    if($numrows >0){
        while ($row = mysql_fetch_assoc($query)){
            $id = $row ['id'];
            $title = $row ['title'];
            $description = $row ['description'];
            $keywords = $row ['keywords'];
            $link = $row ['link'];
            $date = $row ['date'];

            echo "<h2><a href='$link'>$title</a><h2/>
            $description <br /><br />";
        }
    }
    else 
        echo "No results found for \"<b>$each</b>\" ";

    //disconnect
    mysql_close();
?>

The search script works fine, but the only problem is that it searches by keyword which increases the search result, but makes it hard to find what you want because a lot of keywords on different entries match.

Now, I was reading online about full text search ("Full-text searching is performed using MATCH() ... AGAINST syntax. MATCH()") but I don't know how to apply that to my code.

Upvotes: 0

Views: 3469

Answers (1)

Rob
Rob

Reputation: 1860

This is what I've used in the past. Also, the column you're doing a MATCH on must be altered to allow FULLTEXT:

    $keyword = "Led Zeppelin";
    $words = explode(" ",$keyword);

    $keyword_parts = '';
    foreach ($words as $w) {
        $keyword_parts .= "+" . $w ." ";
    }
    $keyword_parts = substr($keyword_parts,0,-1);
    $query = "SELECT
              *,
              MATCH (column1,column2) AGAINST ('" . $keyword . "') as score
              FROM table
              WHERE MATCH (column1,column2) AGAINST ('" . $keyword_parts . "' IN BOOLEAN MODE)
              ORDER BY score DESC";

Upvotes: 2

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