获取一个PHP PDO连接，处理它，使用它

问题描述

您好，有人可以告诉我在这里我是否有正确的想法来连接到数据库等... 我在配置和处理方面有一些帮助。我想将其全部保留在类范围内，以便我在主文件中没有连接变量，而只调用我需要的类函数。

这是我想出的。.

配置文件

command: |
  "C:\Program Files\.......exe" /s /f c:\path\file.txt

处理文件

class siteDbc {

    protected function cfg() {

        return [

            'host' => 'localhost','username' => '','password' => '','name' => '','charset' => 'utf8mb4','options' =>[

                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,PDO::ATTR_EMULATE_PREPARES => false

            ]

        ];        

    }

}

然后我将它们包含在主文件中

class siteDbh extends siteDbc {

    protected function connect() {

        try {

            // Get the variable values used to connect and login
            $dsn = "mysql:host={$this->cfg()['host']};dbname={$this->cfg()['name']};charset={$this->cfg()['charset']}";

            // Attempt to connect to the SQL database using PDO(Prepared Database Object)
            // Send the Database name,user and pass to the PDO class to try and connect
            // Attribute "options" included
            return new PDO($dsn,$this->cfg()['username'],$this->cfg()['password'],$this->cfg()['options']);

        } catch (PDOException $e) {

            die($e->getMessage());

        }

    }

}

然后是一类公共功能，用于在主文件中使用的http设置

require_once INCLUDES_BASEDIR.'_site_pdo/_sitePDO-dbc.cfg.php';
require_once INCLUDES_BASEDIR.'_site_pdo/_sitePDO-dbh.class.php';

然后在我的主文件中做这样的事情

class siteHTTP extends siteDbh {

    // Select HTTP request

    public function request() {

        $sql = "SELECT http_request FROM settings WHERE 1";

        if (!$stmt = $this->connect()->query($sql)) {

            return false;

        } else {

            return $stmt->fetch()['http_request'];

        }

    }

    //#

    // Select Domain

    public function domain() {

        $sql = "SELECT site_domain FROM settings WHERE 1";

        if (!$stmt = $this->connect()->query($sql)) {

            return false;

        } else {

            return $stmt->fetch()['site_domain'];

        }

    }

    //#

    // Select Directory

    public function directory() {

        $sql = "SELECT site_url_dir FROM settings WHERE 1";

        if (!$stmt = $this->connect()->query($sql)) {

            return false;

        } else {

            return $stmt->fetch()['site_url_dir'];

        }

    }

    //#

}

另一个在主文件中使用函数的示例，该函数检查真实会话。当然还有更多了。

require_once INCLUDES_BASEDIR.'_site_pdo/_sitePDO-http.class.php';

$siteHTTP = new siteHTTP;

// Get URL Data - Force HTTPS or HTTP

// SITE HTTP Array

define('SITE_HTTP',array(

    'request' => $siteHTTP->request(),'domain' => $siteHTTP->domain(),'directory' => $siteHTTP->directory()

));

// Site URL - A combination of HTTP Request and Site Domain and Directory of site gives you a full URL string
define('SITE_URL',SITE_HTTP['request'].SITE_HTTP['domain'].SITE_HTTP['directory']);
//#

// Force HTTP HOST to be the actual HOST (yourdomain.com)
// HTTP HOST is a security. NOTE I only use this 
// Server Global ONCE here to make sure domain.com is 
// domain.com and not hackyourshit.com.
if (isset($_SERVER['REQUEST_URI']) && isset($_SERVER['HTTP_HOST']) && $_SERVER['HTTP_HOST'] != SITE_HTTP['domain']) {
    header('Location: '.SITE_HTTP['request'].SITE_HTTP['domain'].trim(htmlentities($_SERVER['REQUEST_URI'],ENT_QUOTES | ENT_SUBSTITUTE,'UTF-8')));
    exit;
} else if (isset($_SERVER['HTTP_HOST']) == false) {
    die('Access Denied!');
}
//#

// Force HTTPS - SSL TLS ON
if (SITE_HTTP['request'] === 'https://') {
    if (empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] == "off") {
        //header('HTTP/1.1 301 Moved Permanently');
        header('Location: '.SITE_URL);
        exit;
    }
    // Force HTTP - SSL TLS OFF
} else if (SITE_HTTP['request'] === 'http://') {
    if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on") {
        //header('HTTPS/1.1 301 Moved Permanently');
        header('Location: '.SITE_URL);
        exit;
    }
}
//#

使用if语句作为句柄并返回false会更好，如果连接为false的话，我可以自己处理主文件中的错误？

这里完全是自学的，建议/帮助表示赞赏！！ 谢谢

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