Yahoo news IT記事を取得する｛定番｝

13279 ワード
PHP7 PHP PHP テキストリンク

自分の記事に
Yahoo news IT記事を取得するという定番の記事が無かったので書いてみました。
yahoo newsのhtmlコードが変更されるとPHPのプログラムコードの修正が発生します。

yahoo_news.php
<?php
session_start();
class yahoo_{
        function main(){
        return new class{
            var $xpath = null;
            function gethtml($url){
                    $html = file_get_contents($url);
                    $dom = new DOMDocument();
                    $html = mb_convert_encoding($html, "HTML-ENTITIES", 'UTF-8');
                    @$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
                    $this->xpath = new DOMXPath($dom);

                    return new class($this->xpath){
                        var $xpath_obj = null;
                        function __construct($xpath){
                            $this->xpath_obj = $xpath;
                        }
                        function yahoo_news_it(){
                            $res =[];
                            foreach($this->xpath_obj->query("//*[@id=\"uamods-topics\"]/div/div/div/ul/li") as $obj){
                                $res[] = $obj->textContent;
                                }
                                return $res;
                        }
                    };

            }
        };
    }
}

$ret = [];
if($_SESSION["token"] === $_POST["token"]){
    $yahoo_ = new yahoo_();
    $ret["view"] = $yahoo_->main()->gethtml("https://news.yahoo.co.jp/categories/it")->yahoo_news_it();
}
print json_encode($ret);

<?php
    session_start();
    $token_byte = openssl_random_pseudo_bytes(16);
    $_SESSION["token"] = $token = bin2hex($token_byte);
?>
<!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/5.15.3/css/all.min.css">
<link rel="stylesheet" href="assets/css/style.css">
<title>yahoo_news</title>
</head>
<body>
    <div class="container">
        <div class="row">
            <div class="col-12">
                <div id="view"></div> 
                <input type="hidden" name="" value="<?=$token?>" id="token">
                <button class="btn btn-primary" id="btn" type="button">yahoo_newsを取得する</button>
            </div>
        </div>
    </div>
<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>
    document.getElementById("btn").addEventListener("click",function(){
        $.ajax({
            type: "post",
            url: "./yahoo_news.php",
            data:{token:document.getElementById("token").value},
            dataType: "json",
            success: function (response) {
                if(response){
                    document.getElementById("view").innerHTML = ((res)=>{
                        var str = "";
                        for (const key in res) {
                            str+=res[key] + "<br>";
                        }
                        return str;
                    })(response.view);
                }
            }
        });
    });
</script>
</body>
</html>
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