@Blog

<?php

class EloRatingSystem {
    private $kFactor; // K値（調整係数）

    public function __construct($kFactor = 32) {
        $this->kFactor = $kFactor;
    }

    /**
     * レーティング計算
     * @param float $playerRating プレイヤーの現在のレーティング
     * @param float $opponentRating 対戦相手のレーティング
     * @param float $result 試合結果 (1: 勝ち, 0: 負け, 0.5: 引き分け)
     * @return float 更新後のレーティング
     */
    public function calculateNewRating($playerRating, $opponentRating, $result) {
        // 期待勝率を計算
        $expectedScore = 1 / (1 + pow(10, ($opponentRating - $playerRating) / 400));

        // 新しいレーティングを計算
        $newRating = $playerRating + $this->kFactor * ($result - $expectedScore);

        return $newRating;
    }
}

// 使用例
$eloSystem = new EloRatingSystem(32);

$player1Rating = 1600; // プレイヤー1の初期レーティング
$player2Rating = 1500; // プレイヤー2の初期レーティング

$result = 1; // プレイヤー1が勝利 (勝ち: 1, 負け: 0, 引き分け: 0.5)

$newPlayer1Rating = $eloSystem->calculateNewRating($player1Rating, $player2Rating, $result);
$newPlayer2Rating = $eloSystem->calculateNewRating($player2Rating, $player1Rating, 1 - $result);

echo "プレイヤー1の新しいレーティング: $newPlayer1Rating\n";
echo "プレイヤー2の新しいレーティング: $newPlayer2Rating\n";

<link rel="stylesheet" href="examplestyle.css">

<span id="site_description"></span>

let htmlcode = ["#efefef", "#181B39", "#262a2e", "#192734", "#1c483b", "#bf7800", "#83094f"].map(elm => `<span class='color_code' style='color:${elm}' data-color-code='${elm}'>■</span>`).join("\n");

const basecolor = "#262a2e";
let cookiefn = function (CodeColor) {
    let r = document.cookie.split(';');
    return r.length ? ((r) => {
        let changecolor = "";
        for (let ii = 0; ii < r.length; ii++) {
            let content = r[ii].split('=');
            for (let i = 0; i < content.length; i++) {
                if (content[i].replaceAll(" ", "") === "bgcolor_code") {
                    changecolor = content[i + 1];
                }
            }
        }
        return changecolor?changecolor:CodeColor;
    })(r) : CodeColor;
};

let old_color = cookiefn(basecolor);
document.getElementById("site_description").insertAdjacentHTML("afterend", htmlcode);
[...document.querySelectorAll(".color_code")].forEach(elm => {
    elm.addEventListener("click", function (e) {
        color_set(elm.getAttribute("data-color-code"));
    });
});

color_set(old_color);

function color_set(color) {
    for (let ii = 0; ii < document.styleSheets.length; ii++) {
        if (String(document.styleSheets[ii].href).match(/mag_tcd036-child\/style\.css\?ver=/)) {
            for (let i = 0; i < document.styleSheets[ii].cssRules.length; i++) {
                let element_css_code = document.styleSheets[ii].cssRules[i];
                try {
                    element_css_code.style.backgroundColor = color;
                    if (color === "#efefef") {
                        element_css_code.style.color = "#000000";
                        
                    } else {
                        element_css_code.style.color = "#FFFFFF";
                    }
//いらないかも領域🤔👇
                    document.querySelectorAll("#wp-calendar > tbody > tr > td > a").forEach(elm=>{
                        elm.style.backgroundColor = "#909091";
                    });
                    document.getElementById("searchsubmit").style.backgroundColor = "#000";
                    document.querySelector("#s").style.backgroundColor = "#909091";
                    [...document.querySelectorAll("code")].forEach(elm=>{
                        [...elm.querySelectorAll("span")].forEach(childen_elm=>{
                            childen_elm.style.backgroundColor = "#565656";
                        });
                    });
//いらないかも領域🤔👆                    
                } catch (error) {
                }
            }

            document.cookie = "bgcolor_code=" + color;
        }
    }
}

        const ctx = document.getElementById('myChart');
        let data = [12, 19, 3, 19, 2, 3];
        new Chart(ctx, {
            type: 'bar',
            data: {
                labels: ['demo1', 'demo2', 'demo3', 'demo4', 'demo5', 'demo6'],
                datasets: [{
                    label: '# of Votes',
                    data: data,
                    borderWidth: 1
                }]
            },
            options: {
                scales: {
                    x: {
                        beginAtZero: true
                    }
                }
            }
        });

<!DOCTYPE html>
<html lang="ja">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>demo site</title>
    <style>
html {
    width: 100vw;
    height: 100vh;
}

body {
    background-color: rgb(0, 0, 0);
    color: aliceblue;
    background-image: url(./assets/images/aig-mid22910-120-xl_TP_V.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}

div.box {
    border-color: aliceblue;
    border-style: inset;
    position: absolute;
    width: 300px;
    height: 450px;
    color: white;
    border-radius: 1em;
    padding: 1em;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
    /* background-color: #ffffff80; */
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    overflow-wrap: break-word;
    text-align: center;
}

div>form>p {
    font-weight: bold;
    margin: 13px;
}

input {
    opacity: 0.5;
}

textarea {
    opacity: 0.5;
}

button {
    padding: 5px;
    border-radius: 1em;
    border-style: solid;
    border-color: aliceblue;
    background-color: aliceblue;
    color: rgb(0, 0, 0);
}
button:hover{
    border-color: rgb(255, 255, 255);
    border-style: inset;
    background-color: rgb(27, 76, 119);
    color: aliceblue;
}
.put:nth-child(2){
    overflow: auto;
    height: 120px;
}
    </style>
</head>
<body>
    <div class="box">
        <div id="box2">
            <form action="submit.php" method="post">
                <p>名前:<input type="text" name="name"></p>
                <p><textarea name="text" id="" cols="30" rows="10"></textarea></p>
                <p><button class="btn" type="submit">確認</button></p>
            </form>
        </div>
        <div id="data">
            <p class="put"></p>
            <p class="put"></p>
        </div>
    </div>
    <script src="./assets/js/main.js"></script>
</body>

</html>

<?php
var_dump(xss_d($_POST));
print(xss_d($_POST["name"])."<br>");
print(xss_d($_POST["text"])."<br>");

function xss_d(mixed $val){
    if(!isset($val))return false;

    if(is_array($val)){
        foreach ($val as $key => $value) {
            $val[$key] = strip_tags($value);
            $val[$key] = htmlspecialchars($val[$key],ENT_QUOTES);
        }
    }else{
        $val = strip_tags($val);
        $val = htmlspecialchars($val,ENT_QUOTES);
    }

    return $val;

}

<?php
require_once "vendor/autoload.php";
use Abraham\TwitterOAuth\TwitterOAuth;

class tw{
    var $connection = null;
    function __construct()
    {
        $this->connection = new TwitterOAuth(APIKEY, APISECRET,ACCESSTOKEN, ACCESSTOKENSECRET);
        $this->connection->setApiVersion("2");
    }

    function pickup_tweets(mixed $tw_text=null){
         $obj = (object)[];
        if(isset($tw_text) && is_array($tw_text)){
            foreach ($tw_text as $key => $value) {
                if(preg_replace("/[ |　]/","",$value)){
                    $obj = !$key?(
                        $this->connection->post("tweets", ["text" =>$value], true)
                    ):
                    (
                        $this->connection->post("tweets", ["reply"=>["in_reply_to_tweet_id"=>$obj->data->id],"text"=> $value], true)
                    );
                }
            }
            return true;
        }
        return false;
    }
}

<?php
       require_once "tw-index.php";
       $tw_text[0] ="test1";
       $tw_text[1] ="test2";
       $tw = new tw();
       if($tw->pickup_tweets($tw_text)){
        $ret["msg"] = "ok";
       }else{
        $ret["msg"] = "NG";
       }
       var_dump($ret);

<?php
//オリジナルサムネイルタグの取得
if (!function_exists('get_original_image_tag')) :
  function get_original_image_tag($image_url, $width, $height, $class, $alt = null)
  {
    $html = '<img src="' . esc_url($image_url) . '" alt="' . esc_attr($alt) . '" class="' . esc_attr($class) . '" width="' . esc_attr($width) . '" height="' . esc_attr($height) . '" />';
    $html = convert_all_lazy_load_tag($html);
    $html = apply_filters("youtubeimage",$html);
    return $html;
  }
endif;

<?php
/*
Plugin Name: youtube image
Description: youtube image chg
Version: 1.0
*/
if (!defined('ABSPATH')) exit;
function youtubeimage_chg($imgurl){
    $url = null;
    if(preg_match("/(https:\/\/www\.youtube\.com\/watch\?v=[\-|_|a-zA-Z|0-9]{1,})/",get_the_content(),$matches)){
        $url = "https://img.youtube.com/vi/".preg_replace("/(https:\/\/www\.youtube\.com\/watch\?v=)/","",$matches[0])."/hqdefault.jpg";
        $url = preg_replace("/(src=\"https:\/\/.*no\-image\-[0-9]{2,3}\.png\")/","src=\"".$url."\"",$imgurl);
     }
     return $url?$url:$imgurl;
}

add_filter("youtubeimage","youtubeimage_chg");

<?php
//ini_set("display_errors","On");
session_start();
require "db_config.php";

//読み込みCSVファイル名セット
class csv
{
    /**
     * @param string $filename
     * @param int $cnt
     * @return Object
     */
    public function ini_csv($filename = "", $cnt = 0)
    {
        return new csv_read($filename, $cnt);
    }
}

//CSVデータを読み込ます
class csv_read
{
    var $max = 10000;
    var $cnt = 0;
    var $handle = null;
    /**
     * @param string $filename
     * @param int $cnt
     */
    public function __construct($filename = "", $cnt = 0)
    {
        $this->cnt = $cnt;
        $this->handle =  fopen($filename, "r");
        $_SESSION["offset"] ? fseek($this->handle, $_SESSION["offset"]) : $this->handle;
    }
    /**
     * @param int $header_skip
     * @return Object
     */
    public function reader($header_skip = 0)
    {
        if ($this->handle !== FALSE) {
            $response = null;
            $data = fgetcsv($this->handle, null, ",");
            if (!$header_skip || $_SESSION["offset"]) {
                if ($data !== FALSE) {
                    $_SESSION["offset"] = ftell($this->handle);
                    $response["data"] = $data;
                    $response["cnt"] = $this->cnt > $this->max ? 0 : ($this->cnt + 1);
                    $flag = true;
                } else {
                    $_SESSION["offset"] = null;
                    $flag = false;
                }
            } else {
                $_SESSION["offset"] = ftell($this->handle);
                $response["cnt"] = $this->cnt > $this->max ? 0 : ($this->cnt + 1);
                $flag = false;
            }
        } else {
            $_SESSION["offset"] = null;
            $flag = false;
        }
        return new table_save($flag, $response);
    }
}

//tableにCSVデータを保存
class table_save
{
    var $flag = false;
    var $result = null;
    /**
     * @param boolean $flag
     * @param array  $response
     * @return void
     */
    public function __construct($flag, $response)
    {
        $this->flag = $flag;
        $this->result = $response;
        $this->column_name = "name,,...";
    }
    /**
     * @param string  $column_name
     * @return void
     */
    public function tbl_save($column_name = "")
    {
        if ($this->flag) {
            $column = $column_name ? $column_name : $this->column_name;
            $is_column = explode(",", $column);
            foreach ($is_column as $key => $val) {
                $is_value[$val] = $this->result["data"][$key];
            }
            try {
                $pdo = new PDO(DSN, USERNAME, PASSWORD);
                $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                $sql = (function ($is_column) {
                    $INSERTFIRST = null;
                    $INSERTLAST = null;
                    foreach ($is_column as $key => $val) {
                        $INSERTFIRST[] = "$val";
                        $INSERTLAST[] = ":$val";
                    }
                    $INSERTSQL = "(" . implode(",", $INSERTFIRST) . ")values(" . implode(",", $INSERTLAST) . ")";
                    $UPDATESQL = null;
                    foreach ($is_column as $key => $val) {
                        $UPDATESQL[] = "$val = :$val";
                    }
                    return "INSERT INTO " . TABLENAME . $INSERTSQL . " ON DUPLICATE KEY UPDATE " . implode(",", $UPDATESQL) . ";";
                })($is_column);

                $stmt = $pdo->prepare($sql);
                foreach ($is_value as $key => &$value) {
                    $is_type = ($key === "test3" || $key === "test13") ? PDO::PARAM_INT : PDO::PARAM_STR;
                    $stmt->bindValue(":$key", $value, $is_type);
                }
                $this->result["sql"] = $stmt->execute();
            } catch (\Throwable $th) {
                //throw $th;
                $this->result = null;
                print $th->getMessage();
            }
        }
        print json_encode($this->result);
    }
}

//RUN...POST DATA
if (isset($_POST["csrf_token"])  && d_xss($_POST["csrf_token"]) === $_SESSION['csrf_token']) {

    $_SESSION["offset"] = (int)d_xss($_POST["reset_flag"]) === 1 ? null : d_xss($_SESSION["offset"]);
    $filename = d_xss($_POST["filename"]);
    $cnt = (int)d_xss($_POST["cnt"]);

    $column_name = "test1,test2,test3,test4,test5,test6,test7,test8,test9,test10,test11,test12,test13,test14,test15";
    $header_skip = 1;

    $csv = new csv();
    $csv->ini_csv($filename, $cnt)->reader($header_skip)->tbl_save($column_name);
    $csv = null;
} else {
    print "";
}
function d_xss($data){
    $data = strip_tags($data);
    $data = htmlspecialchars($data,ENT_QUOTES);
    return $data;
}

<?php
 // ログインした状態と同等にするためセッションを開始します
 session_start();
 // 暗号学的的に安全なランダムなバイナリを生成し、それを16進数に変換することでASCII文字列に変換します
  $toke_byte = openssl_random_pseudo_bytes(16);
  $csrf_token = bin2hex($toke_byte);
  // 生成したトークンをセッションに保存します
  $_SESSION['csrf_token'] = $csrf_token;
?>
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="Description" content="Enter your description here"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
<title>CSV</title>
</head>
<body>
    <input type="hidden" name="csrf_token" value="<?=$csrf_token?>">
    <span class="h3" id="cnt"></span><br><br>
    <span class="h4" id="read_csv"></span><br><br>
    <span class="h4" id="debug"></span><br><br>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.1/umd/popper.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/js/bootstrap.min.js"></script>
<script>
    window.onload = function(){
        read_csv(0,1);
    };
    function read_csv(cnt,reset_flag){
        try{
            $.ajax({
            type: "post",
            url: "./assets/php/class_csv.php",
            async: false,
            data: {csrf_token:document.getElementsByName("csrf_token")[0].value,reset_flag:reset_flag,filename:"dummy.csv",cnt:cnt},
            dataType: "json",
            success: function (response) {
                    if(response){
                        cnt = response.cnt;
                        document.getElementById("cnt").innerText = cnt;
                        if(response.data){
                            document.getElementById("read_csv").innerText = response.data[0] + response.sql;
                            document.getElementById("debug").innerText = cnt ===21?response.data:document.getElementById("debug").innerText;
                        }
                        setTimeout(function(){read_csv(cnt)},0);
                    }
                }
            });
        }catch(e){
            console.warn(e);
            read_csv(cnt);
        }
    }
</script>
</body>
</html>