@Blog

<?php
/*
Plugin Name: Rakuten_Seller
Plugin URI: https://zip358.com/
Description: 楽天アフィリエイトを表示
Author: @zip358com
Version: 0.1
Author URI: https://zip358.com/
*/
require_once plugin_dir_path( __FILE__ ).'/vendor/autoload.php';
define("RAKUTEN_YOUR_APPLICATION_ID","xxxxxxxxxxxxxxx");
define("RAKUTEN_YOUR_AFFILIATE_ID","xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");

define("AMAZON_YOUR_ACCESS_KEY_ID","");
define("AMAZON_YOUR_SECRET_KEY","");
define("AMAZON_YOUR_ENDPOINT","");
define("AMAZON_YOUR_URL","");


function Rakuten_Seller_content_plus($content) {
    if(is_single()) {
       $content.='［Rakuten_Seller_param type="auto"］';
    }
    return $content;
}

function Rakuten_Seller($params = array()){
     $htmlcode = "";
    extract(shortcode_atts(array(
        'type'=>'',
        'word'=>''
    ), $params));
    $client = new RakutenRws_Client();
    // アプリID (デベロッパーID) をセットします
    $client->setApplicationId(RAKUTEN_YOUR_APPLICATION_ID);
     
    // アフィリエイトID をセットします(任意)
    $client->setAffiliateId(RAKUTEN_YOUR_AFFILIATE_ID);

    if($type==="auto"){
        $tags = get_the_tags();
        $htmlcode.= "<div class='rakuten_seller_div'>";
        foreach( $tags as $tag) { 
            $htmlcode.= Rakuten_code($client,$tag->name);
        }        
        $htmlcode.= "</div>";
        
    }elseif($type==="search"){
        $htmlcode.= "<div class='rakuten_seller_div'>";
        $htmlcode.= Rakuten_code($client,$word);
        $htmlcode.= "</div>";
    }

    return $htmlcode;
 }

function Rakuten_code($client,$word="JavaScript"){
    $htmlcode = "";
   
    // IchibaItem/Search API から、keyword=$word を検索します
    $response = $client->execute('IchibaItemSearch', array(
      'keyword' => $word,
      'genreInformationFlag' => 1
    ));
    // レスポンスが正しいかを isOk() で確認することができます
    $cnt = 0;
    if ($response->isOk()) {
        foreach ($response as $item) {
           $htmlcode.= "<div class='rakuten_seller_item'>".
           "<img src='".$item["mediumImageUrls"][0]["imageUrl"]."'>".
           "<p>".$item["itemName"]."</p>".
           "<a class='rakuten_btn' href='".$item["affiliateUrl"] . "' title='".$item["itemName"]."'><span>楽天で購入"."</span></a></div>";
           $htmlcode.= amazon_code($item["isbn"],$item["jan"]);
           if($cnt>0){
                break;
           }
           $cnt++;
        }

    } else {
        //echo 'Error:'.$response->getMessage();
    }
    return $htmlcode;
}

function amazon_code($isbn="",$jan=""){
    $htmlcode = "";

    return $htmlcode;
}


add_shortcode('Rakuten_Seller_param', 'Rakuten_Seller');
add_filter('the_content', 'Rakuten_Seller_content_plus');