@Blog

function abc(){
    return ['a','b','c'];
}
[$a,$b,$c] = abc();
echo "a={$a} b={$b} c={$c}";

function getArticleCount($post_id)
{
    global $wpdb;

    // 指定された投稿の公開日時を取得
    $post_date = $wpdb->get_var(
        $wpdb->prepare("SELECT post_date FROM $wpdb->posts WHERE ID = %d AND post_type = 'post' AND post_status = 'publish'", $post_id)
    );

    if (!$post_date) {
        return 0; // 投稿が存在しない場合
    }

    // この投稿より古い投稿の数を数える
    $post_rank = $wpdb->get_var(
        $wpdb->prepare(
            "SELECT COUNT(*) + 1 FROM $wpdb->posts WHERE post_type = 'post' AND post_status = 'publish' AND post_date < %s", 
            $post_date
        )
    );

    return $post_rank;
}

async function example1(a){
    if(Number.isInteger(a)){
        return a;
    }
    throw new Error('wow');
}

example1(123).then(d=>console.log(d)).catch(e=>console.log(e));
example1('abc').then(d=>console.log(d)).catch(e=>console.log(e));

async function example2(a){
    if(Number.isInteger(a)){
        return a;
    }
    throw new Error('wow');
}
async function example3() {
    let result = await example2(123).then(d=>d);
    document.body.textContent = result;
}
example3();

async function example4() {
    let result = await example2('123').then(d=>d).catch(e=>e);
    document.body.textContent = result;
}
//example4();

<?php
// Your code here!
function hoge(){
    return 'コールバック関数ですよね';
}

function bar($f){
    print $f();    
}

bar("hoge");

<?php
$data = [
    [
    'title'=>'Aタイトル',
    'date'=>'2024.05.31 05:00',
    ],
    [
    'title'=>'Cタイトル',
    'date'=>'2024.05.30 05:00',
    ],
    [
    'title'=>'Bタイトル',
    'date'=>'2024.05.31 07:10',
    ],
];
$dateArray = array_column($data, 'date');
array_multisort($dateArray, SORT_DESC, $data);
var_dump($data);

array(3) {
  [0]=>
  array(2) {
    ["title"]=>
    string(13) "Bタイトル"
    ["date"]=>
    string(16) "2024.05.31 07:10"
  }
  [1]=>
  array(2) {
    ["title"]=>
    string(13) "Aタイトル"
    ["date"]=>
    string(16) "2024.05.31 05:00"
  }
  [2]=>
  array(2) {
    ["title"]=>
    string(13) "Cタイトル"
    ["date"]=>
    string(16) "2024.05.30 05:00"
  }
}

<?php
$a = fn($x,$y) => $x*$y;
var_dump($a(3,3));

<?php
$a = (fn($x,$y) => $x*$y)(3,3);
var_dump($a);

<?php
/**
 * チェーンクラス？数珠繋ぎクラス？関数の作り方．
 */
class ChainClass{
    public $value = 0;

    /**
     * 加算関数
     */
    public function add($value)
    {
        $this->value = $this->value + $value;
        return $this;
    }

    /**
     * 乗算関数
     */
    public function multiplication($value)
    {
        $this->value = $this->value * $value;
        return $this;
    }

    /**
     * 解を表示する関数
     */
    public function answer()
    {
        printf('答えは%dです',$this->value);
        return $this;
    }
}

(new ChainClass)->add(2)->add(3)->multiplication(10)->add(5)->answer();

$country = $object?->user?->getRule();

const fruits = ['apple', 'banana', 'orange'];

const hasBanana = fruits.includes('banana');
console.log(hasBanana); // true

const hasGrape = fruits.includes('grape');
console.log(hasGrape); // false

        // 新着25記事の配列を取得する
        $new_posts = get_posts([
            'post_status' => 'publish',
            'posts_per_page' => 25,
            'orderby' => 'date',
            'order' => 'desc',
        ]);

wp-load.php

SELECT COALESCE(列1, 列2, 列3, 列4) AS 選択された列
FROM テーブル名;

SELECT COALESCE(price1, price2) AS 選択された価格
FROM products;

<?php
    var_dump(array_combine([1,2,3],["one","two","three"]));

config('app.name')

@inject('代入される任意の変数名', 'namespaceを含むクラス名')
{{ $代入される任意の変数名->呼び出すメソッド名() }}

{!! 任意の変数名 !!}

{{ app()->call('App\Http\Controllers\TestController@test') }}

{{app()->call('App\Http\Controllers\QiitaController@aiueo',['a'=>'test'])}}

echo password_hash("rasmuslerdorf", PASSWORD_DEFAULT);

nohup php File_Check.php &

├── File_Check.php
├── upload
└── data

<?php
while(true){
    if($result = is_scandir("./upload")){
        foreach($result as $key=>$value){
            rename("./upload/$value","./data/$value");
        }
    }
    sleep(3);
}

function is_scandir(string $dirname="",array $ext_list = ["png","jpg"]){
    $is_filelest = [];
    $result = scandir($dirname);
    foreach($result as $key=>$value){
        $ext = substr($value, strrpos($value, '.') + 1);
        if(in_array($ext,$ext_list,false)!== false){
            $is_filelest[] = $value;
        }
    }
    return count($is_filelest)>0 ? $is_filelest : false;
}

<?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
session_start();
$toke_byte = openssl_random_pseudo_bytes(16);
$csrf_token = bin2hex($toke_byte);
$_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/5.1.0/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
    <link rel="stylesheet" href="assets/css/style.css?<?= time() ?>">
    <title>掲示板</title>
</head>

<body class="p-3 text-white">
    <div class="p-4 shadow rounded" style="background-color:#d6dbdf;">
        <div class="container mt-5">
            <div class="row">
            <div class="col-12 text-center">
                <h1 class="shadow" style="color:#195a57;">掲示板::version 2.5</h1>
            </div>
                <div class="col-12">
                    <div class="input-group shadow rounded">
                        <div class="input-group-append">
                            <span class="input-group-text bg-dark text-white" id="my-addon">ニックネーム</span>
                        </div>
                        <input class="form-control" type="text" name="name" placeholder="ニックネームを入力" aria-describedby="my-addon">
                    </div>
                    <div class="form-group shadow rounded">
                        <label for="my-textarea">コメント</label>
                        <textarea id="my-textarea" class="form-control" name="comment" rows="7"></textarea>
                    </div>
                    <button id="btn" class="mt-2 btn btn-info text-white shadow rounded" type="button">投稿する</button>
                </div>
            </div>
        </div>
        <div class="container mt-5">
            <div class="row">
                <div id="view" class="col-12"></div>
            </div>
        </div>
    </div>
    <footer>
        <a href="/">TOP</a> :: © Reborn9.sakura.ne.jp <?=date("Y")?>
    </footer>
    <input type="hidden" name="csrf_token" value="<?= $csrf_token ?>">
    <script src="https://code.jquery.com/jquery-3.2.1.min.js" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/2.9.2/umd/popper.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.1.0/js/bootstrap.min.js"></script>
    <script src="assets/js/main.js?<?= time() ?>"></script>
</body>

</html>

<?php
class db
{
    var $pdo = null;
    function __construct()
    {
        try {
            $this->pdo = new PDO("sqlite:../../bbs.sqlite3");
            $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);        //code...
        } catch (\Throwable $th) {
            //throw $th;
            print $th->getMessage();
        }
    }
    function select_limit()
    {
        if($this->pdo){
            $stmt = $this->pdo->prepare('select * from bbs order by no desc limit 0,5');
            $stmt->execute();
            $result = $stmt->fetchAll();
            $stmt = null;
            $this->pdo = null;
            return new view($result);
        }
    }
    function insert($name,$comment,$sns_cnt=0)
    {

        try {
            $stmt = $this->pdo->prepare('INSERT INTO bbs (`time`,`name`,`comment`,sns_cnt)values(strftime(\'%Y年%m月%d日 %H時%M分%S秒\',CURRENT_TIMESTAMP, \'localtime\'),:name,:comment,:sns_cnt)');
            $stmt->bindParam(':name', $name, PDO::PARAM_STR);
            $stmt->bindParam(':comment', $comment, PDO::PARAM_STR);
            $stmt->bindParam(':sns_cnt', $sns_cnt, PDO::PARAM_INT);
            $stmt->execute();
            $stmt = $this->pdo->prepare('DELETE FROM bbs WHERE bbs.no = (SELECT no from bbs ORDER BY no ASC LIMIT 1);');
            $stmt->execute();
            $stmt = null;
            $this->pdo = null;
            return true;
        } catch (\Throwable $th) {
            print $th->getMessage();
            return false;
        }
    }
}

class view{
    var $item = null;
    function __construct($item)
    {
        $this->item = $item;        
    }
    function view_item($item="")
    {
        try {
            $item = $item?$item:$this->item;
            ob_start();
            ?>
            
            <?php
            foreach($item as $key=>$value){
                ?>
                <div class="mt-2 row txtbox shadow rounded">
                <div class="col-3 name_<?=$value["no"]?> rounded-start fs-6">
                    ニックネーム::<?=$value["name"]?>さん
                </div>
                <div class="col-9 time_<?=$value["no"]?> fs-6">
                    投稿日時::<?=$value["time"]?>
                </div>
                <div class="col-12 comment_<?=$value["no"]?>">
                    <?= nl2br($value["comment"])?>
                </div>
                <div class="col-12 sns_cnt_<?=$value["no"]?>">
                    <!-- <?=$value["sns_cnt"]?> -->
                </div>
                </div>
                <?php
            }        
            ?>
                
            <?php
            $ret["view"]= ob_get_clean();
            $ret["msg"]= "done";
    
        } catch (\Throwable $th) {
            //throw $th;
            $ret["msg"] = "error";
        }
        return $ret;
    }
}

session_start();
$ret = null;
$mode =  xss_defence($_POST["mode"]);
// $time =  ;
$name =  xss_defence($_POST["name"]);
$comment =  xss_defence($_POST["comment"]);
$sns_cnt =  (int)xss_defence($_POST["sns_cnt"]);
if (isset($_POST["csrf_token"]) 
 && $_POST["csrf_token"] === $_SESSION['csrf_token'] && (function($t){
    return time() - $t > 20?true:false;
 })($_SESSION["save"])) {
    if($mode==="save"){
        $name = !preg_replace("/[ |　]/","",$name)?"匿名":$name;
        $comment = !preg_replace("/[ |　]/","",$comment)?"":$comment;
        if($comment){
            $db = new db();
            $db->insert($name,$comment);
            $_SESSION["save"] = time();
        }
    }
    $db = null;
    $db = new db();
    $ret = $db->select_limit()->view_item();
    print  json_encode($ret);
}
function xss_defence($value){
    if(is_array($value)){
        foreach($value as $key=>$val){
            $value["$key"] = strip_tags($val);
            $value["$key"] = htmlspecialchars($value["$key"],ENT_QUOTES);
        }

    }else{
        $value = strip_tags($value);
        $value = htmlspecialchars($value);
    }
    return $value;
}

var showDiffDate = function( tYear, tMonth, tDay) {
    var nowDate = new Date();
    var dnumNow = nowDate.getTime();
    var targetDate = new Date( tYear, tMonth-1, tDay );
    var dnumTarget = targetDate.getTime();

    var diffMSec = dnumTarget - dnumNow;
    var diffDays = diffMSec / ( 1000 * 60 * 60 * 24 );
    var showDays = Math.ceil( diffDays ); 
    var Msg;
    if( showDays >= 0 ) {
       Msg = "" + showDays + " days(" + function(){
         var is_days = parseInt(parseInt(showDays) - Math.floor(showDays / 7) * 2);
         is_days = (nowDate.getDay() === 0)?is_days -2:is_days;
         is_days = (nowDate.getDay() === 6)?is_days -3:is_days;
         return is_days;
       }() +")";
    }
    else {
       Msg = "" + (showDays * -1) + "";
    }
    return Msg;
 };

 document.getElementById("days").innerText = showDiffDate(2022,7,15);

RssTickList

RssStockOrder

let useKendata = [
    {'no':'01','name':'北海道'},
    {'no':'02','name':'青森県'},
    {'no':'03','name':'岩手県'},
    {'no':'04','name':'宮城県'},
    {'no':'05','name':'秋田県'},
    {'no':'06','name':'山形県'},
    {'no':'07','name':'福島県'},
    {'no':'08','name':'茨城県'},
    {'no':'09','name':'栃木県'},
    {'no':'10','name':'群馬県'},
    {'no':'11','name':'埼玉県'},
    {'no':'12','name':'千葉県'},
    {'no':'13','name':'東京都'},
    {'no':'14','name':'神奈川県'},
    {'no':'15','name':'新潟県'},
    {'no':'16','name':'富山県'},
    {'no':'17','name':'石川県'},
    {'no':'18','name':'福井県'},
    {'no':'19','name':'山梨県'},
    {'no':'20','name':'長野県'},
    {'no':'21','name':'岐阜県'},
    {'no':'22','name':'静岡県'},
    {'no':'23','name':'愛知県'},
    {'no':'24','name':'三重県'},
    {'no':'25','name':'滋賀県'},
    {'no':'26','name':'京都府'},
    {'no':'27','name':'大阪府'},
    {'no':'28','name':'兵庫県'},
    {'no':'29','name':'奈良県'},
    {'no':'30','name':'和歌山県'},
    {'no':'31','name':'鳥取県'},
    {'no':'32','name':'島根県'},
    {'no':'33','name':'岡山県'},
    {'no':'34','name':'広島県'},
    {'no':'35','name':'山口県'},
    {'no':'36','name':'徳島県'},
    {'no':'37','name':'香川県'},
    {'no':'38','name':'愛媛県'},
    {'no':'39','name':'高知県'},
    {'no':'40','name':'福岡県'},
    {'no':'41','name':'佐賀県'},
    {'no':'42','name':'長崎県'},
    {'no':'43','name':'熊本県'},
    {'no':'44','name':'大分県'},
    {'no':'45','name':'宮崎県'},
    {'no':'46','name':'鹿児島県'},
    {'no':'47','name':'沖縄県'},
];
document.getElementById("ken").insertAdjacentHTML('afterbegin',(function(ken){
    let str = '';
    for (const key in ken) {
        str+= '<option value=' + ken[key].no + '>' + ken[key].name +'</option>';
    }
    return str;
}(useKendata)));

//functionで無名関数
var mumei1 = function(a){
	return a;
};
console.log(mumei1(123));
//アロー関数で無名関数
var mumei2 = (a)=>{
	return a;
};
console.log(mumei2(123));
//functionで即時関数
console.log((function(a){
	return a;
})(123));
//アロー関数で即時関数
console.log(
((a)=>{
	return a;
})(123));