調用成員函數prepare（）在非對象上

此代碼出現錯誤：致命錯誤：調用成員函數prepare（）在C：\ xampp \ htdocs \ kohana \ application \控制器\上線16
這是從Phactory導的例子phactory2_test.php：http://phactory.org/guide/#phpunit-example 調用成員函數prepare（）在非對象上

<?php 
include_once('/simpletest/autorun.php'); 
require_once ('/Phactory/lib/Phactory.php'); 

/** 
    * This is the function we will test. 
    * It should retrieve a user from the db by id, 
    * and return that user's age. 
    * 
    * @param PDO $pdo 
    * @param int $user_id 
    * @return mixed The age of the user, or false if no user 
    */ 
function getUserAge($pdo, $user_id) 
{ 
    $stmt = $pdo->prepare("SELECT * FROM `users` WHERE `id` = ?"); 
    $stmt->execute(array($user_id)); 
    $user = $stmt->fetch(); 

    if(false === $user) { 
     return false; 
    } 

    return $user['age']; 
} 

class UserTest extends UnitTestCase 
{ 
    public static function setUpBeforeClass() 
    { 
     // create a db connection and tell Phactory to use it 
     $pdo = new PDO('mysql:host=127.0.0.1; dbname=testdb', 'root', ''); 
     Phactory::setConnection($pdo); 

     /** 
      * Normally you would not need to create a table here, and would use 
      * an existing table in your test database instead. 
      * For the sake of creating a self-contained example, we create 
      * the 'users' table here. 
      */ 
     $pdo->exec("CREATE TABLE `users` (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)"); 

     // reset any existing blueprints and empty any tables Phactory has used 
     Phactory::reset(); 

     // define default values for each user we will create 
     Phactory::define('user', array('name' => 'Test User $n', 'age' => 18)); 
    } 

    public static function tearDownAfterClass() 
    { 
     Phactory::reset(); 

     // since we created a table in this test, we must drop it as well 
     Phactory::getConnection()->exec("DROP TABLE `users`"); 
    } 

    public function testGetUserAge() 
    { 
     // test that getUserAge() returns false for a nonexistent user 
     $age = getUserAge(Phactory::getConnection(), 0); 
     $this->assertFalse($age); 

     // create 20 users, with ages from 1-20 
     $users = array(); 
     for($i = 1; $i <= 20; $i++) 
     { 
      // create a row in the db with age = $i, and store a Phactory_Row object 
      $users[] = Phactory::create('user', array('age' => $i)); 
     } 

     // test that getUserAge() returns the correct age for each user 
     foreach($users as $user) 
     { 
      // Phactory_Row provides getId() which returns the value of the PK column 
      $user_id = $user->getId(); 

      $age = getUserAge(Phactory::getConnection(), $user_id); 

      $this->assertEqual($user->age, $age); 
     } 
    } 
} 
?>

什麼是可能的原因是什麼？
謝謝

編輯：我發現了問題，Phactory ::的getConnection（）由於某種原因

來源

2015-03-19 Guilherme Castelo

用try catch塊封閉與數據庫的所有交互。這樣做可以確保您可以在需要時退出捕獲腳本中的腳本，還可以讓您捕獲錯誤並重新拋出或打印出來。嘗試{ //數據庫連接或查詢這裏 }趕上（PDOException $ E）{ 回聲$ E->的getMessage（）; } – Chris 2015-03-19 11:19:51

您必須添加bind_param之前執行的準備語句，返回NULL。

$stmt = $pdo->prepare("SELECT * FROM `users` WHERE `id` = ?"); 
    $stmt->bind_param('i', $user_id); 
    $stmt->execute();

這是MySQL連接。對於pdo，您可以添加

print_r($stmt->errorInfo());

要了解您的問題。

來源

2015-03-19 10:48:03

'$ stmt-> execute（array（$ user_id））;'< - 我想你忽略了這一行 – Rizier123 2015-03-19 10:54:30

調用成員函數prepare（）在非對象上

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