admin.php

<?php

class Admins{
    private $host = "localhost";
    private $database = "xover";
    private $username = "root";
    private $password = "";
    private $conn;

    public function __construct() {
        $this->conn = new PDO("mysql:host=".$this->host.";dbname=".$this->database, $this->username, $this->password);
        $this->conn->exec("SET NAMES 'utf8';");
    }

    public function checkAdminLogin($array) {
        session_start();
        $args = array("username" => $array["username"]);
        $sql = "SELECT * FROM user WHERE username = :username";
        $result = $this->conn->prepare($sql);
        $result->execute($args);

        if ($result->rowCount() > 0){
            $row = $result->fetchObject();
            // session_start();
            $_SESSION["username"] = $row->username;
            $_SESSION["admin_login"] = true;
            // session_write_close();

            $result_data["valid"] = true;
            $result_data["msg"] = "Successfully login";
        }
        else{
            $result_data["valid"] = false;
            $result_data["msg"] = "You have entered wrong username or password. Please try again";
        }

        return json_encode($result_data);
    }

    public function addArticle($array, $files){
        $random_string = substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"), 5, 8);
        //get extension
        $extImage = pathinfo($_FILES['featured_image']['name'][0],PATHINFO_EXTENSION);

        //rename image
        $filename = $random_string.".".$extImage;
        $date = date("Y-m-d");

        $args = array("featured_image" => $filename, "title" => $array["title"], "description" => $array["description"], "content" => $array["content"], "category" => $array["category"], "status" => $array["status"], "paid" => $array["paid"], "price" => $array["price"], "date" => $date);
        $sql = "INSERT INTO articles SET featured_image = :featured_image, title = :title, description = :description, content = :content, category = :category, status = :status, paid = :paid, price = :price, createdAt = :date";
        $result = $this->conn->prepare($sql);
        $result->execute($args);

        $imagePath = "images/featured_image_articles/".$fileName;
        move_uploaded_file($_FILES['featured_image']['tmp_name'][0], $imagePath);

        if($result){
            $result_data["valid"] = true;
            $result_data["msg"] = "Successfully uploaded new article";
        }
        else{
            $result_data["valid"] = false;
            $result_data["msg"] = "Failed to upload article. Please try again";
        }
        print_r($result);

        return json_encode($result_data);
    }

}

?>