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File: sqlite_fulltextsearchex.class.php

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  Classes of Setec Astronomy  >  SQLite Full Text Search  >  sqlite_fulltextsearchex.class.php  >  Download  
File: sqlite_fulltextsearchex.class.php
Role: Class source
Content type: text/plain
Description: Extended class with exponential word prominence calculation
Class: SQLite Full Text Search
Add Full Text Search SQL commands to SQLite
Author: By
Last change: Added the code of wordpreparation method
Date: 9 years ago
Size: 1,114 bytes
 

Contents

Class file image Download
<?php 

require_once (dirname (__FILE__) . '/sqlite_fulltextsearch.class.php');

class 
sqlite_fulltextsearchex extends sqlite_fulltextsearch {

    var 
$striptags false;

    function 
sqlite_fulltextsearchex () {
        
parent::sqlite_fulltextsearch ();
        
$this->striptags false;
    }

    
/* override */
    
function prominence ($position$string_words_count$against_words_count) {
        
// exponential prominence
        
return (($position $position) / $string_words_count);
    }

    
/* override */
    
function wordspreparation (&$string, &$against) {
        if (
$this->striptags) {
            
$string preg_replace ('/<script.*?\>.*?<\/script>/si'' '$string); 
            
$string preg_replace ('/<style.*?\>.*?<\/style>/si'' '$string); 
            
$string preg_replace ('/<.*?\>/si'' '$string); 
            
$string html_entity_decode ($string);
        
            
$against preg_replace ('/<script.*?\>.*?<\/script>/si'' '$against); 
            
$against preg_replace ('/<style.*?\>.*?<\/style>/si'' '$against); 
            
$against preg_replace ('/<.*?\>/si'' '$against); 
            
$against html_entity_decode ($against);
        }
    }

}

?>