會員數..陣列輸出數字？

Question

我目前卡住..

當試圖獲取成員指望它返回一個數組，這是不那麼容易當它是一個數輸出..這裏是代碼

Member.php

public function __construct() { $this->_pdo = DB::connect(); }

public function count() { 
    $this->_query = $this->_pdo->query("SELECT COUNT(*) FROM members"); 
    if(!$this->_query->error()) { 
     print_r($this->_query); 
    } 
    return false; 
} 

db.php中

private function __construct() { 
    try { 
     $this->pdo = new PDO('mysql:host=' . Config::get('mysql/host') . ';dbname=' . Config::get('mysql/dbname'), Config::get('mysql/username'), Config::get('mysql/password')); 
    } catch(PDOException $e) { 
     die($e->getMessage()); 
    } 
} 

public static function connect() { 
    if(!isset(self::$_connect)) { 
     self::$_connect = new DB(); 
    } 
    return self::$_connect; 
} 

public function query($sql, $params = array()) { 
    $this->_error = false; 
    if($this->_query = $this->pdo->prepare($sql)) { 
     $x = 1; 
     if(count($params)) { 
      foreach($params as $param) { 
       $this->_query->bindValue($x, $param); 
       $x++; 
      } 
     } 

     if($this->_query->execute()) { 
      $this->_results = $this->_query->fetchAll(PDO::FETCH_OBJ); 
      $this->_count = $this->_query->rowCount(); 
     } else { 
      $this->_error = true; 
     } 
    } 
    return $this; 
} 

如何以正確的方式輸出？

Answer 1

您需要獲取數據。

$this->_query->fetchColumn();