休闲游戏中使用redis作为排行榜数据存储

<?php
require ‘./predis/autoload.php‘;

$redis = new Predis\Client(
    array(
        ‘scheme‘=>‘tcp‘,
        ‘host‘=>‘127.0.0.1‘,
        ‘port‘=>6379,
 ));


//header("content-type:text/html;charset=utf-8");

if(trim($_POST[‘game_id‘]) == ‘‘ || trim($_POST[‘user_name‘]) == ‘‘  || trim($_POST[‘score‘]) == ‘‘){
    echo ‘need more information!‘;
    exit;
}else{
    // echo ‘OK‘;
    // echo $_POST[‘game_id‘];
    // echo $_POST[‘user_name‘];
    // echo $_POST[‘score‘];

    $game_id = "g_" . $_POST[‘game_id‘];
    $name = $_POST[‘user_name‘];
    $score = $_POST[‘score‘];

    if($score > 0){
       $beforeScore = $redis->zscore($game_id
, $name);

       if($score > $beforeScore){
         $itemScore = array($name => $score);
         $redis->zadd($game_id, $itemScore);
       }

    }

    
}

<?php
require ‘./predis/autoload.php‘;
$redis = new Predis\Client(
    array(
        ‘scheme‘=>‘tcp‘,
        ‘host‘=>‘127.0.0.1‘,
        ‘port‘=>6379,
 ));

if(trim($_GET[‘game_id‘]) == ‘‘){
    echo ‘need game_id‘;
}else{
	$game_id = "g_" . $_GET[‘game_id‘];
    $board_score = $redis->zrange($game_id, -10, -1, ‘withscores‘);
    //print_r($board_score);
    echo json_encode($board_score);
    //echo $board_score;

}

<?php
require ‘./predis/autoload.php‘;
$redis = new Predis\Client(
    array(
        ‘scheme‘=>‘tcp‘,
        ‘host‘=>‘127.0.0.1‘,
        ‘port‘=>6379,
 ));

if(trim($_GET[‘game_id‘]) == ‘‘ || trim($_GET[‘user_name‘]) == ‘‘){
    echo ‘need game_id and name‘;
}else{
	$game_id = "g_" . $_GET[‘game_id‘];
    $user_name = $_GET[‘user_name‘];

    $userCurrentRange = $redis->zrevrank($game_id, $user_name); 

     //echo ‘current range:‘ . $userCurrentRange;

    $result = array();
    if(true){
        $halfCount = 4;

         $leftRank = $userCurrentRange - $halfCount;
        $rightRank = $userCurrentRange + $halfCount;
        if($leftRank < 0){
          $leftRank  = 0;
        }

        $board_score = $redis->zrevrange($game_id, $leftRank, $rightRank, ‘withscores‘);
        $index = 0;
        foreach($board_score as $name => $score){
           if($name == $user_name){
               break;
           }else{
               $index = $index + 1;
           }
       }

        $firstRank = $userCurrentRange - $index + 1;

        foreach($board_score as $name => $score){
           $eachItem = array();
           $eachItem[‘name‘] = $name;
           $eachItem[‘score‘] = $score;
           $eachItem[‘rank‘] = $firstRank;

           $result[] = $eachItem;

           $firstRank = $firstRank + 1;
        }

        echo json_encode($result);
 

    }else{
        echo json_encode($result);
    }


     

}

getJsonFromUrl:function(){
        var xhr = cc.loader.getXMLHttpRequest();
        var args = "?game_id=" + gameId;
        xhr.open("GET", rankBoardURL + args, true);
        xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
        xhr.onreadystatechange = function () {
            if (xhr.readyState == 4 && (xhr.status >= 200 && xhr.status <= 207)) {
                var response = xhr.responseText;
                cc.log("res:" + response);
                cc.log("send success");
                var obj = JSON.parse(response);
                this.initContent(obj);
            }
        }.bind(this);

        xhr.send();
    },
    initContent:function(jsonValue){
        var size = cc.director.getWinSize();

        var fontDefBlueStroke = new cc.FontDefinition();
        fontDefBlueStroke.fontName = "Arial";
        fontDefBlueStroke.fontSize = 50;
        fontDefBlueStroke.textAlign = cc.TEXT_ALIGNMENT_LEFT;

        var jsonLength = 0;
        for(var name in jsonValue){
            jsonLength++;
        }
        cc.log("jsonlength:" + jsonLength);
        var nameMargin = 50;
        var nameStartPositionY = 800 - nameMargin * jsonLength;

        var lastRank = jsonLength;
       for(var name in jsonValue){
          cc.log(name);
          cc.log(jsonValue[name]);

          this.rankLabel = new cc.LabelTTF(lastRank + ‘:‘, fontDefBlueStroke);
          this.addChild(this.rankLabel);
          this.rankLabel.x = 100;
          this.rankLabel.y = nameStartPositionY;
          this.rankLabel.setAnchorPoint(cc.p(0, 0.5));


          this.nameLabel = new cc.LabelTTF(name, fontDefBlueStroke);
          this.addChild(this.nameLabel);
          this.nameLabel.x = size.width * 0.5 - 100;
          this.nameLabel.y = nameStartPositionY;
          this.nameLabel.setAnchorPoint(cc.p(0, 0.5));

          this.scoreLabel = new cc.LabelTTF(parseFloat(jsonValue[name]).toFixed(2), fontDefBlueStroke);
          this.addChild(this.scoreLabel);
          this.scoreLabel.x = size.width * 0.5;
          this.scoreLabel.y = nameStartPositionY;
          this.scoreLabel.setAnchorPoint(cc.p(0, 0.5));

          nameStartPositionY = nameStartPositionY + nameMargin;
          lastRank = lastRank - 1;
       }
    }

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