Question

我用相同的标题检查了所有其他问题，但我无法解决。我试图学习PDO的事情：D我认为只有真正的PHP大师才能解决这个问题。并且可以建议学习pdo的网页。

的index.php

require_once 'core.php';
DB::getInstance();

core.php中

session_start();

$GLOBALS['yapilandirma']= array(
    'mysql' => array(
        'host' => '127.0.0.1',
        'kullanici_adi' => 'root',
        'sifre' => '',
        'db' => 'mmogezgini'
    ),
    'hatirla' => array(
        'cerez_adi' => 'hash',
        'cerez_bitis_suresi' => 604800
    ),
    'oturum' => array(
        'oturum_adi' => 'kullanici'
    )
);

spl_autoload_register(function($class){
    require_once $class . '.php';   
});

require_once 'Sterilize.php';

$con = mysqli_connect("localhost","root","","mmogezgini");
header('Content-Type: text/html; charset=utf-8');
mysqli_set_charset($con, "utf8")

Yapilandirma.php

class Yapilandirma{
    public static function get($yol = null){
        if($yol){
            $yapilandirma = $GLOBALS['yapilandirma'];
            $yol = explode('/',$yol);
            print_r($yol);

            foreach($yol as $bit){
                if(isset($yapilandirma[$bit])) {
                    $yapilandirma = $yapilandirma[$bit];
                }
            }

            return $yapilandirma;
        }

        return false;
    }   
}

db.php中

class DB {
    private static $_instance = null;
    private $_pdo,
    $_query, 
    $_hata = false,
    $_sonuclar,
    $_count = 0;

    private function __construct() {
        try {
            $this->_pdo = new PDO('mysql:host=' . Yapilandirma::get('mysql/host') .';dbname=' . Yapilandirma::get('mysql/db'), Yapilandirma::get('mysql/kullanici_adi'), Yapilandirma::get('mysql/sifre'));
        } catch(PDOException $e){
            die($e->getMessage());  
        }
    }
        public static function getInstance(){
        if(!isset(self::$_instance)){
            self::$_instance = new DB();
            }
            return self::$_instance;
        }


}

Answer 1

如果所有文件都在同一个文件夹中，则此autolader应该有效：

<强> core.php中：

function autoloader($className) {
    $filename = realpath(__DIR__) . '/' . $className . '.php';

    if (file_exists($filename)) {
        require_once($filename);
    } else {
        trigger_error("$filename not found");
    }

    return true;
}

spl_autoload_register(__NAMESPACE__ . '\autoloader');

您现在应该可以从index.php调用DB::getInstance();。如果没有正确加载类，您将在php错误日志中看到错误。

致命错误：调用未定义的方法DB :: getInstance（）

1 个答案: