Question

在mainpage.php文件中，我用这个：

<?php
$dsn = 'mysql:host=localhost;dbname=webfilter_schema';
$username = 'root';
$password = '';

$dbh = new PDO($dsn, $username, $password); //WORKS.

和它的罚款。但是在另一个php文件中：

<?php

class HomeController {

public $pdoObject; // handle of the db connexion
private static $instance;

public function __construct()
{
    $dsn = 'mysql:host=localhost;dbname=webfilter_schema';
    $user = "root";
    $password = "";
    $this->$pdoObject = new PDO($dsn, $user, $password);// Error line..
}

public function createLocalObject(){
    $query ="INSERT INTO USERS SET NAME = ?, PASSWORD = ?,IPADDRESS=?,E_MAIL=?";
    $process = $this->pdoObject->prepare($query);
    $insertResult = $process->execute(array("asd","ferfr","23","sadsads@hotmail.com"));

    if($insertResult)
    {
        return true;
    }
    return false;
  }
}

?>

它抛出了像

这样的异常

无法在第25行的C：\ xampp \ htdocs \ WP \ Controller \ HomeController.php5中访问空属性

这是怎么回事？

Answer 1

只是将语言添加为参数..

public function __construct() { 
$dsn = 'mysql:host=localhost;dbname=webfilter_schema'; 
$username = 'root'; 
$password = ''; 
$options = array( PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8', );
$this->pdoObjectp = new PDO($dsn, $username, $password, $options); 
}

它有效。

pdo例外＆＃34; colunt not not driver in ...＆＃34;

1 个答案: