Question

我正在使用登录功能但遇到了一个我无法弄清楚的错误。

这是我的模型登录类：

class Login {

    private $username;
    private $password;
    private $cxn;       //database object

    function __construct($username,$password)
    {
        //set data
        $this->setData($username, $password);
        //connect DB
        $this->connectToDB();
        // get Data 
    }

    function setData($username, $password)
    {
        $this->username = $username;
        $this->password = $password;
    }

    private function connectToDB()
    {
        include 'Database.php';
        $connect = '../include/connect.php';
        $this->cxn = new database($connect);  
    }

    function getData()
    {
        $query = "SELECT * FROM anvandare WHERE anvandarnamn = '$this->username' AND losenord ='$this->'password'";
        $sql = mysql_query($query);

        if(mysql_num_rows($sql)>0)
        {
            return true;
        }
        else
        {
            throw new Exception("Användarnamnet eller Lösenordet är fel. Försök igen.");
        } 
    }

    function close() 
    {
        $this->cxn->close(); //Here is the error it says "Method 'close' not found in class
    }
}

最后一个函数提供错误“方法'关闭'未在类中找到”，“在主题类中找不到引用方法。”

这是我的数据库类：

class Database {

    private $host;
    private $user;
    private $password;                  
    private $database;

   function __construct($filename)
   {       
       if(is_file($filename)) include $filename;
       else throw new exception("Error!");

       $this->host=$host;
       $this->user=$user;
       $this->password=$password;
       $this->database=$database;

       $this->connect();
    }

    private function connect()
    {
        //Connect to the server
        if(!mysql_connect($this->host, $this->user, $this->password))
        throw new exception("Error, not connected to the server.");

        //Select the database
        if(!mysql_select_db($this->database))
        throw new exception("Error, no database selected");             
    }

    function close()
    {
        mysql_close();
    }
}

路径是正确的，所以不是这样。可能是什么错误？

Answer 1

PhpStorm无法确定您的$this->cxn字段的类型。您可以通过简单的PHPDoc注释提供typehint来提供帮助：

/** @var Database */
private $cxn;       //database object

Answer 2

此提示也有助于PHPstorm正确识别方法

如果你有这样的代码：

foreach( $myEntity as $entity ) {  
  $entity->myValidMethod();
}

只需添加此提示：

/* @var $entity \My\Name\Space\Path\MyEntity */
foreach( $myEntity as $entity ) {  
  $entity->myValidMethod();
}

感谢http://mossco.co.uk/symfony-2/how-to-fix-method-not-found-in-class-orange-warning-in-phpstorm/

Answer 3

我认为代码中没有可见性问题。 PHP手册说明：

Class methods may be defined as public, private, or protected. Methods declared without any explicit visibility keyword are defined as public.

我想你可能有两个数据库类。本主题中描述了类似的问题： best way to call function from an extended class

Answer 4

您可以尝试function __destruct() {} Reference

而不是关闭（）功能

问题在于缺少public / protected / private

Answer 5

你必须添加＆＃34; public＆＃34;数据库类中的方法声明关键字恕我直言

public function close()

在课堂上找不到的方法

5 个答案: