cross linking two arrays ?

[fla5h]

Can someone help ?

I'm trying to write good code, keeping queries to a minimum etc.

What I want to do is take a query which returns an array, then you do a while loop to cycle through the array.

Is there anyway to crossreferece this with another array without putting it into the loop ?

Lets post an example, it will probably help, lol

If you take the karma hack, usercp bit.

PHP Code:


// ############################### start karma ###############################

if($karmaenable==1) {

    $karmas=$DB_site->query("SELECT karma.postid as postid,karmapos,karmaneg,reason,post.threadid as threadid,post.dateline as dateline,thread.title as title FROM karma LEFT JOIN post ON karma.postid=post.postid LEFT JOIN thread ON post.threadid=thread.threadid WHERE karma.userid='$bbuserinfo[userid]' ORDER BY timestamp DESC LIMIT 0,5");

    $uk=$DB_site->query_first("SELECT karma FROM user WHERE userid='$bbuserinfo[userid]'");

    $haskarma=0;
    while($karma=$DB_site->fetch_array($karmas)) {

        if ($karma[karmapos] > $karma[karmaneg])
            $karmaposneg="karmapos.gif";
        else if ($karma[karmaneg] > $karma[karmapos])
            $karmaposneg="karmaneg.gif";
        else
            $karmaposneg="karmabalance.gif";

        $karma[timeline]=vbdate($timeformat,$karma[dateline]);
        $karma[dateline]=vbdate($dateformat,$karma[dateline]);

        $karma[reason]=bbcodeparse($karma[reason]);

        if (strlen($karma[title]) > 25)
            $karma[title] = substr($karma[title],0,23)."<smallfont>...</smallfont>";

        eval("\$karmacommentbits .= \"".gettemplate("karma_usercpcommentbits")."\";");
        $haskarma=1;

    }

    if ($haskarma==1)
        eval("\$karmacomments = \"".gettemplate("karma_usercpcomments")."\";");
    else
        eval("\$karmacomments = \"".gettemplate("karma_usercpnocomments")."\";");
} 


if I altered this line

PHP Code:

$karmas=$DB_site->query("SELECT karma.postid as postid,karmapos,karmaneg,reason,post.threadid as threadid,post.dateline as dateline,thread.title as title FROM karma LEFT JOIN post ON karma.postid=post.postid LEFT JOIN thread ON post.threadid=thread.threadid WHERE karma.userid='$bbuserinfo[userid]' ORDER BY timestamp DESC LIMIT 0,5"); 


to this

PHP Code:

$karmas=$DB_site->query("SELECT karma.postid as postid,karmapos,karmaneg,reason,post.threadid as threadid,post.dateline as dateline,thread.title as title,whoadded FROM karma LEFT JOIN post ON karma.postid=post.postid LEFT JOIN thread ON post.threadid=thread.threadid WHERE karma.userid='$bbuserinfo[userid]' ORDER BY timestamp DESC LIMIT 0,5"); 


this would return the

$karmas[whoadded] who return the array
$karma[whoadded] who return the id's one by one in the while loop

What if I wanted to return the username of the user.

I would have to do something like

PHP Code:

$DB_site->query("SELECT username FROM user WHERE userid=$karmas[whoadded]); 


hoo would I link these two queries together so in the while loop I can call

$karma[whoadded] = userid
$karma[username] = username

I hope I have explained this, can anyone help please ?

Am I right I can do this using 2 queries ?