如何从这段代码中获取数组数据？

Question

class cstrike_statistics
{
    protected $hostname;
    protected $port;
    protected $playerinfo;
    protected $servervars;
    protected $serverrules;
    protected $errmsg;
    protected $timeout;
    protected $waittime;
    protected $serverCommands;

    public function cstrike_statistics()
    {
        $this->port                         = 27015;
        $this->timeout                      = 15;
        $this->waittime                     = 500;
        $this->serverCommands["players"]    = "\xFF\xFF\xFF\xFF\x55";
        $this->serverCommands["rules"]      = "\xFF\xFF\xFF\xFF\x56";
        $this->serverCommands["info"]       = "\xFF\xFF\xFF\xFF\x54";
    }

    public function setHostname($hostname)
    {
        $this->hostname = $hostname;
    }

    public function setPort($port)
    {
        $this->port = $port;
    }

    private function timenow()
    {
        return doubleval(ereg_replace('^0.([0-9]*) ([0-9]*)$', '2.1', microtime()));
    }

    private function getServerData($command)
    {
        $serverdata     = "";
        $serverdatalen  = 0;

        if (!$cssocket=@fsockopen("udp://".$this->hostname, $this->port, $errnr))
        {
            $this->errmsg="Unable to connect to target host";
            return "";
        }
        else
        {
            socket_set_blocking($cssocket, true);
            @socket_set_timeout($cssocket, 0, 500000);

            fwrite($cssocket, $command, strlen($command));
            $starttime = $this->timenow();

            do
            {
                $serverdata .= fgetc($cssocket);
                $serverdatalen++;
                $socketstatus = socket_get_status($cssocket);

                if ($this->timenow() > ($starttime + $this->waittime))
                {
                    $this->errmsg = "Connection timed out";
                    fclose($cssocket);
                    return "";
                }

            } while ($socketstatus["unread_bytes"]);

            fclose($cssocket);
            return $serverdata;
        }
    }

    private function getnextstring(&$data)
    {
        $tmp     = "";
        $counter = 0;

        while (ord($data[$counter++])!=0) $tmp .= $data[$counter-1];
        $data = substr($data, strlen($tmp)+1);
        return $tmp;
    }

    private function getnextbytevalue(&$data)
    {
        $tmp  = ord($data[0]);
        $data = substr($data, 1);
        return $tmp;
    }

    private function getnextfragvalue(&$data)
    {
        $frags = ord($data[0])+(ord($data[1])<<8)+(ord($data[2])<<16)+(ord($data[3])<<24);
        if ($frags>=4294967294) $frags-=4294967296;
        $data = substr($data, 4);
        return $frags;
    }

    private function getnextplaytime(&$data)
    {
        $decnumber = ord($data[0])+(ord($data[1])<<8)+(ord($data[2])<<16)+(ord($data[3])<<24);
        $binnumber = base_convert($decnumber, 10, 2);
        while (strlen($binnumber) < 32) $binnumber = "0".$binnumber;
        $exp = abs(base_convert(substr($binnumber, 1, 8), 2, 10)) - 127;
        if (substr($binnumber, 0, 1) == "1") $exp = 0 - $exp;
        $man=1;
        $manadd=0.5;

        for ($counter=9; $counter<32; $counter++)
        {
            if (substr($binnumber, $counter, 1) == "1") $man += $manadd;
            $manadd = $manadd/2;
        }

        $time = round(pow(2, $exp) * $man);
        $playtime = "";
        if ($time>3600) $playtime = sprintf("%2dh", $time/3600);
        $time %= 3600;
        $playtime = $playtime.sprintf("%2dm", $time/60);
        $time %= 60;
        $playtime = $playtime.sprintf("%2ds", $time);
        $data = substr($data, 5);
        return $playtime;

    }

    public function getServerRules()
    {
        $serverdata = $this->getServerData($this->serverCommands["rules"]);
        if (strlen($serverdata)<5) return false;
        $rules = (ord($serverdata[5]))+(ord($serverdata[6])*256);
        if ($rules!=0)
        {
            $serverdata = substr($serverdata, 7);
            for ($i=1; $i<=$rules; $i++)
            {
                $this->serverrules[$this->getnextstring($serverdata)] = $this->getnextstring($serverdata);
            }
            return true;
        }
        else
        {
            return false;
        }
    }

    public function getServerInfo()
    {
        $serverdata=$this->getServerData($this->serverCommands["info"]);
        if (strlen($serverdata)<5) return false;
        $serverdata=substr($serverdata,5);
        $this->servervars["serveraddress"]  = $this->getnextstring($serverdata);
        $this->servervars["servername"]     = $this->getnextstring($serverdata);
        $this->servervars["mapname"]        = $this->getnextstring($serverdata);
        $this->servervars["game"]           = $this->getnextstring($serverdata);
        $this->servervars["gamename"]       = $this->getnextstring($serverdata);
        $this->servervars["currentplayers"] = $this->getnextbytevalue($serverdata);
        $this->servervars["maxplayers"]     = $this->getnextbytevalue($serverdata);
        return true;
    }

    public function getServerPlayers()
    {
        $serverdata=$this->getServerData($this->serverCommands["players"]);
        if (strlen($serverdata)<5) return false;
        $players=ord($serverdata[5]);
        $serverdata=substr($serverdata,7);

        for ($i=1;$i<=$players;$i++)
        {
            $this->playerinfo[$i]["name"]       = $this->getnextstring($serverdata);
            $this->playerinfo[$i]["frags"]      = $this->getnextfragvalue($serverdata);
            $this->playerinfo[$i]["time"]       = $this->getnextplaytime($serverdata);
        }
        return true;
    }

    public function getData()
    {

        $data = Array();

        $this->getServerInfo();
        $this->getServerPlayers();
        $this->getServerRules();

        $data['cstrike']['ServerInfo']  = $this->playerinfo;
        $data['cstrike']['ServerVars']  = $this->servervars;
        $data['cstrike']['ServerRules'] = $this->serverrules;

        return $data;
    }
}

$cstrike = new cstrike_statistics();
$cstrike->setHostname("206.212.247.10");
$cstrike->setPort(27015);

print_r($cstrike->getData());

?>

这一切的输出是：

Array
(
    [cstrike] => Array
        (
            [ServerInfo] => Array
                (
                    [0] => Array
                        (
                            [name] => I told Ya, i'll get Ya :)
                            [frags] => 103
                            [time] =>  1h42m 0s
                        )
                    [1] => Array
                        (
                            [name] => Black is Back {UA}
                            [frags] => 59
                            [time] =>  1h20m58s
                        )
                    [2] => Array
                        (
                            [name] => Chelsea FC
                            [frags] => 35
                            [time] =>  1h 1m15s
                        )
                    [3] => Array
                        (
                            [name] => shadowd-m3
                            [frags] => 25
                            [time] => 14m46s
                        )
                    [4] => Array
                        (
                            [name] => .Clem
                            [frags] => 18
                            [time] => 19m27s
                        )
                    [5] => Array
                        (
                            [name] => minDsodom {dope herbs}
                            [frags] => 15
                            [time] => 12m50s
                        )
                    [6] => Array
                        (
                            [name] => Lasa
                            [frags] => 10
                            [time] => 24m16s
                        )
                    [7] => Array
                        (
                            [name] => memo
                            [frags] => 9
                            [time] => 40m49s
                        )
                    [8] => Array
                        (
                            [name] => :o
                            [frags] => 8
                            [time] =>  9m19s
                        )
                )
            [ServerVars] => Array
                (
                    [serveraddress] => 127.0.0.1:27015
                    [servername] => ]Si[ clan [nosteam|boosted] www.clan-si.com [chicago]
                    [mapname] => de_dust2
                    [game] => cstrike
                    [gamename] => NoSteam CS 1.6
                    [currentplayers] => 24
                    [maxplayers] => 32
                )
            [ServerRules] => Array
                (
                    [] => ????Em
                    [_tutor_bomb_viewable_check_interval] => 0.5
                    [_tutor_debug_level] => 0
                    [_tutor_examine_time] => 0.5
                    [_tutor_hint_interval_time] => 10.0
                    [_tutor_look_angle] => 10
                    [_tutor_look_distance] => 200
                    [_tutor_message_character_display_time_coefficient] => 0.07
                    [_tutor_message_minimum_display_time] => 1
                    [_tutor_message_repeats] => 5
                    [_tutor_view_distance] => 1000
                    [AdThemes] => v1.8 by Vet(3TT3V)
                    [aesp_version] => 1.4_beta
                    [afkslay_version] => 2.5.2
                    [allow_spectators] => 1.0
                    [amx_client_languages] => 0
                    [amx_nextmap] => de_cpl_mill
                    [amx_timeleft] => 00:00
                    [amxbans_version] => 5.0
                    [amxmodx_version] => 1.8.0.3660
                    [booster_version] => 1.36
                    [coop] => 0
                    [deathmatch] => 1
                    [decalfrequency] => 30
                    [DoNotShootTheHostages] => 0.2
                    [dp_version] => 0.4.1
                    [edgefriction] => 2
                    [hostage_debug] => 0
                    [hostage_stop] => 0
                    [humans_join_team] => any
                    [map_spawns] => T(20) CT(20)
                    [max_queries_sec] => 1
                    [max_queries_sec_global] => 1
                    [max_queries_window] => 1
                    [metamod_version] => 1.19
                    [mp_allowmonsters] => 0
                    [mp_autokick] => 0
                    [mp_autoteambalance] => 1
                    [mp_buytime] => 0.5
                    [mp_c4timer] => 45
                    [mp_chattime] => 10
                    [mp_consistency] => 1
                    [mp_fadetoblack] => 0
                    [mp_flashlight] => 1
                    [mp_footsteps] => 1
                    [mp_forcecamera] => 0
                    [mp_forcechasecam] => 0
                    [mp_fragsleft] => 0
                    [mp_freezetime] => 3
                    [mp_friendlyfire] => 0
                    [mp_ghostfrequency] => 0.1
                    [mp_hostagepenalty] => 13
                    [mp_kickpercent] => 0.66
                    [mp_limitteams] => 2
                    [mp_logdetail] => 0
                    [mp_logfile] => 1
                    [mp_logmessages] => 1
                    [mp_mapvoteratio] => 1
                    [mp_maxrounds] => 0
                    [mp_mirrordamage] => 0
                    [mp_playerid] => 0
                    [mp_roundtime] => 2.3
                    [mp_startmoney] => 1000
                    [mp_timeleft] => 0
                    [mp_timelimit] => 0
                    [mp_tkpunish] => 0
                )
        )
)

我无法正确理解代码从数组中获取数据。

Answer 1

在代码的最后（在课程结束之后），用以下代码替换代码：

$cstrike = new cstrike_statistics();
$cstrike->setHostname("206.212.247.10");
$cstrike->setPort(27015);

$result = $cstrike->getData();

//For maxplayers, do this:
echo "<h3>Maximum Players: ".$result['cstrike']['ServerVars']['maxplayers']."</h3>";

//For players do this:
foreach($result['cstrike']['ServerInfo'] as $players)
     echo "<h4>Player Name: ".$players['name']."</h4>";

Answer 2

可能最好阅读数组上的手册页：http://php.net/manual/en/language.types.array.php

Answer 3

尝试以下方法：

$obj = $cstrike->getData();
echo "players count : " . count($obj['cstrike']['ServerInfo']) . "<br/>";
echo "Player1 Name: " . $obj['cstrike']['ServerInfo'][0]['name'] . "<br/>";