Making a Top 10 out of PHP/XML page

[medar]

I have the following code that displays the full contents of an XML page. I would like to limit this information to just the "Top 10" of a certain variable (namely 'lastrp' in this case). I don't even know where to start, nothing I have tried works...

Any suggestions or snippets? Here is the code:

<?php

$CACHE_PATH = "xml/cache";

$INTERVAL = 3600;

$tmp = "";
$xmldata = "";

$needupdate = FALSE;
$rev = 1;

$is_head = 0;

$GUILD = 0;

class Guild
{
var $name;
var $realm;
var $timestamp;
var $shield;
var $emblem;
var $keepowned;
var $activechar;
var $activemem;
var $rp;
var $chars;
var $lastrp;
var $recent;
var $three;
var $seven;
var $week;
var $inactive;
var $activelvl;
var $totallvl;
var $activerp;
var $classes;
var $classes_act;
var $top;

function Guild($n)
{
	$this->name = $n;
	$this->realm = "";
	$this->timestamp = "";
	$this->shield = "";
	$this->emblem = "";
	$this->keepowned = "";
	$this->activechar = 0;
	$this->activemem = 0;
	$this->rp = 0;
	$this->chars = 0;
	$this->lastrp = 0;
	$this->recent = 0;
	$this->three = 0;
	$this->seven = 0;
	$this->week = 0;
	$this->inactive = 0;
	$this->activelvl = 0;
	$this->totalrp = 0;
	$this->totallvl = 0;
	$this->activerp = 0;
	$this->classes = array();
	$this->classes_act = array();
	$this->top["level"] = array("", 0);
	$this->top["rank"] = array("", 9);
	$this->top["lastrp"] = array("", 0);
	$this->top["totalrp"] = array("", 0);
	$this->top["weaponcraft"] = array("", 0);
	$this->top["armorcraft"] = array("", 0);
	$this->top["tailoring"] = array("", 0);
	$this->top["fletching"] = array("", 0);
}

function getactivechar()
{
	return ($this->chars - $this->inactive);
}

}

$CHARS = array ();
$CHARS_MAP = array();
$CHAR = 0;

class Char
{
var $name;
var $laston;
var $nlaston;
var $race;
var $class;
var $level;
var $rank;
var $totalrp;
var $lastrp;
var $anon;
var $weaponcraft;
var $armorcraft;
var $fletching;
var $tailoring;

function Char($n)
{
	$this->name = $n;
	$this->laston = "Inactive";
	$this->nlaston = "0";
	$this->race = "";
	$this->class = "";
	$this->level = 0;
	$this->rank = 9;
	$this->totalrp = 0;
	$this->lastrp = 0;
	$this->anon = "TRUE";
	$this->weaponcraft = 1;
	$this->armorcraft = 1;
	$this->fletching = 1;
	$this->tailoring = 1;
}

}

function characterData($parser, $data)
{
global $tmp;
$tmp = $data;
}

function startElement($parser, $tagName, $attrs)
{
global $GUILD, $CHAR;

if ($tagName == "GUILD")
{
	while (list ($key, $val) = each ($attrs))
	{
		switch ($key)
		{
			case "NAME":
				$GUILD = new Guild($val);
				break;

			case "REALM":
				$GUILD->realm = $val;
				break;

			case "KEEPOWNED":
				$GUILD->keepowned = $val;
				break;

			case "ACTIVECHARS":
				$GUILD->activechar = $val;
				break;

			case "ACTIVEMEMBERS":
				$GUILD->activemem = $val;
				break;

			case "GUILDRP":
				$GUILD->rp = $val;
				break;

			case "TIMESTAMP":
				$GUILD->timestamp = $val;
				break;

		}
	}
}
elseif ($tagName == "CHARACTER")
{
	while (list ($key, $val) = each ($attrs))
	{
		switch ($key)
		{
			case "NAME":
				$CHAR = new Char($val);
				break;

			case "LASTON":
				$CHAR->laston = ereg_replace("_", " ", $val);
				switch ($CHAR->laston)
				{
					case "Recently":
						$GUILD->recent++;
						$CHAR->nlaston = 4;
						break;

					case "3 Days":
						$GUILD->three++;
						$CHAR->nlaston = 3;
						break;

					case "7 Days":
						$GUILD->seven++;
						$CHAR->nlaston = 2;
						break;

					case "2 Weeks":
						$GUILD->week++;
						$CHAR->nlaston = 1;
						break;

					default:
						$GUILD->inactive++;
						$CHAR->nlaston = 0;
						break;
				}
				break;
		}
	}
}

}

function endElement($parser, $tagName)
{
global $GUILD, $CHARS, $CHAR, $tmp;
global $CHARS_MAP;

if ($tagName == "CHARACTER")
{
	if ($CHAR)
	{
		array_push($CHARS, $CHAR);
		if (preg_match("/([A-z]+) ([A-z]+)/", $CHAR->name, $match))
		{
			$CHAR->name = $match[1];
		}

		$CHARS_MAP[$CHAR->name] =& $CHARS[count($CHARS) - 1];
		$GUILD->chars++;
		$CHAR = 0;
	}
}
else
{
	switch($tagName)
	{
		case "RACE":
			$CHAR->race = $tmp;
			break;

		case "CLASS":
			$CHAR->class = $tmp;

			if (isset($GUILD->classes[$tmp]))
			{
				$GUILD->classes[$tmp]++;

			}
			else
			{
				$GUILD->classes[$tmp] = 1;
			}

			if (isset($GUILD->classes_act[$tmp]))
			{
				if ($CHAR->laston != "Inactive")
				{
					$GUILD->classes_act[$tmp]++;
				}
			}
			else
			{
				if ($CHAR->laston != "Inactive")
				{
					$GUILD->classes_act[$tmp] = 1;
				}
				else
				{
					$GUILD->classes_act[$tmp] = 0;
				}
			}

			break;

		case "LEVEL":
			$CHAR->level = $tmp;
			$GUILD->totallvl += $tmp;
			if ($CHAR->laston != "Inactive")
			{
				$GUILD->activelvl += $CHAR->level;
			}

			break;

		case "GUILDRANK":
			$CHAR->rank = $tmp;
			break;

		case "TOTALRP":
			$CHAR->totalrp = $tmp;
			$GUILD->totalrp += $CHAR->totalrp;
			if ($CHAR->laston != "Inactive")
			{
				$GUILD->activerp += $CHAR->totalrp;
			}
			break;

		case "LASTWEEKRP":
			$CHAR->lastrp = $tmp;
			$GUILD->lastrp += $CHAR->lastrp;
			break;

		case "ANON":
			$CHAR->anon = $tmp;
			break;

		case "WEAPONCRAFT":
			$CHAR->weaponcraft = $tmp;
			break;

		case "ARMORCRAFT":
			$CHAR->armorcraft = $tmp;
			break;

		case "FLETCHING":
			$CHAR->fletching = $tmp;
			break;

		case "TAILORING":
			$CHAR->tailoring = $tmp;
			break;
		}
}

}

function getguilddata()
{
global $cache_path, $server, $guildid;
global $xmldata, $INTERVAL, $needupdate;

$xml_parser = xml_parser_create();

xml_set_element_handler($xml_parser, "startElement", "endElement");

xml_set_character_data_handler($xml_parser, "characterData");

$filetime = filemtime("xml/cache/test_16.xml");

if ((!$filetime) || ((time() - $filetime) > $INTERVAL))
{
	$fp = fopen("test.xml","r");

	if (!$fp)
	{
		$fp = fopen("xml/cache/Bedevere_16.xml", "r")  or Error("cannot read data file.");
	}

	$needupdate = TRUE;
}
else
{
	$fp = fopen("xml/cache/Bedevere_16.xml", "r")  or Error("cannot read data file.");
}

while ($data = fgets($fp, 1024))
{
	$xmldata .= $data;
	if (!xml_parse($xml_parser, $data, feof($fp)) )
	{
		Error(sprintf("XML error: %s at line %d",
			xml_error_string(xml_get_error_code($xml_parser)),
			xml_get_current_line_number($xml_parser)));
	}
}

xml_parser_free($xml_parser);

fclose($fp);

}

function print_header()
{
global $is_head;

if ($is_head)
	return;

echo <<<EOT

EOT;

$is_head = 1;

}

function print_chardef_tr($char)
{
global $GUILD;

$lastrp = number_format($char->lastrp);
$totalrp = number_format($char->totalrp);

if ($char->laston != "Inactive")
{
	print "\t\t<tr class=\"first\">\n";
}
else
{
	print "\t\t<tr class=\"inactive\">\n";
}

echo <<<EOT
		<td>$char->name</td>
		<td>$char->race</td>
		<td>$char->class</td>
		<td>$char->level</td>
		<td>$char->lastrp</td></tr>

EOT;
}

function print_guild()
{
global $SCRIPT_NAME;
global $GUILD, $server, $guildid;
global $EMBLEM, $img_path, $pri_color;

$t = basename($GUILD->shield);
list($pri, $sec, $pat) = sscanf($t, "%d-%d-%d-full.png");

$t = basename($GUILD->emblem);

$guildrp = number_format($GUILD->rp);
$activelvl = (integer)($GUILD->activelvl / $GUILD->getactivechar());
$totallvl = (integer)($GUILD->totallvl / $GUILD->chars);
$activerp = number_format((integer)($GUILD->activerp / $GUILD->getactivechar()));
$totalrp = number_format((integer)($GUILD->totalrp / $GUILD->chars));

}

function print_chars_default()
{
global $CHARS;
global $SCRIPT_NAME, $sortby;
global $server, $guildid;

echo <<<EOT
<table cellspacing="1" align="center">
	<tr class="content-title">
		<td>Name</td>
		<td>Race</td>
		<td>Class</td>
		<td>LV</td>
		<td>RPWeek</td>
	</tr>

EOT;

foreach($CHARS as $char)
{
	print_chardef_tr($char);
}


echo <<<EOT
</table>

EOT;
}

getguilddata();
print_header();
print_guild();
print_chars_default();

?>[/SIZE]