Need Help Using Relevance Algorithm

[ojsimon]

Hi
This is a script which combines many different video feeds together, at the moment you can see that it

shuffle($all); 

instead of an algorithm to sort the records, i would like to change it so that it is sorted by relevancy to a string which i could specify. Here is the whole code for the page, and bellow that is an algoryhtym which i tried to implement into the code but would not work. Can anyone either help me implement this algorithm or write one that will work with this code?

<?
function getall($searchterms) {
    require("yt.php");
    require("gv.php");
    require("dm.php");
    require("mc.php");
    
    $yt = yt($searchterms);
    $gv = gv($searchterms);
    $dm = dm($searchterms);
    $mc = mc($searchterms);
    
    $all = array_merge($yt,$gv,$dm,$mc);
    if(count($all)) {
        include_once "latest.php";
        updatelatest(str_replace("+","-",$searchterms));    
    }
    $bannedwords = "bannedwords.txt";
    $fp = fopen($bannedwords, "r");
    $wordstmp = fread($fp, filesize($bannedwords));
    fclose($fp);
    $words = explode("\n",$wordstmp);
    $words = array_map("strtolower",$words);
    
    foreach($all as $index=>$arr) {
        $arrtitle = $arr['title'];
        foreach($words as $index2=>$word) {
            if(strstr(strtolower($arrtitle),strtolower(str_replace("\n","",str_replace("\r","",$word))))) {
                unset($all[$index]);
                break;    
            }
        }
    }
    
    srand((float)microtime() * 1000000);
    shuffle($all);
    foreach($all as $j=>$k) {
        if(!trim($k['title'])||!trim($k['link']))
            unset($all[$j]);    
    }

    return $all;    
}

?>

This is the sort of algorythym

usort($multifeed,'funnySort');

function funnySort($a,$b)
{
    // assign numerical value so we can sort on 
        // whether "term" is in title or content or neither

    $term = 'funny';

    $x = 0;    
    if (stripos($a->get_title(),$term))
        $x = 2;
    elseif (stripos($a->get_content(),$term))
        $x = 1;

    $y = 0;    
    if (stripos($b->get_title(),$term))
        $y = 2;
    elseif (stripos($b->get_content(),$term))
        $y = 1;

    return $x <= $y
} 

i also tried to use this code on this site http://www.webmastersherpa.com/tools/search.txt


Please can someone either help me adapt either of these algorithms or help me write one that will work with my code.

[ojsimon]

Please help