PHP/MySQL中的PDO和UTF-8特殊字符？

Question

我正在使用MySQL和PHP 5.3并尝试此代码.

$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$con = mysql_connect("localhost", "root", "");
mysql_set_charset('utf8');
if (!$con)
{
  die('Could not connect: ' . mysql_error());
}

mysql_select_db("kdict", $con);
$sql = "SELECT * FROM `en-kh` where english='a'";
echo $sql;
$result = mysql_query($sql);

while($row = mysql_fetch_array($result))
{
  echo $row['english'] . " </br> " . $row['khmer'];
  echo "<br />";
}
?>

=>我得到了很好的UTF-8渲染显示,做得很好.

但是现在我创建了一个类PDO,以便于扩展和更容易

 class crud {
     // code..
     public function conn()
     {
         isset($this->username);
         isset($this->password);
         if (!$this->db instanceof PDO)
         {
             $this->db = new PDO($this->dsn, $this->username, $this->password);
             $this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
             $this->db->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAMES 'utf8'");   
          }
      }
      /*more code here*/
}



/*** a new crud object ***/
$crud = new crud();
/*** The DSN ***/
$crud->dsn = "mysql:dbname=kdict;host=localhost";

/*** MySQL username and password ***/
$crud->username = 'root';
$crud->password = '';
/*** select all records from table ***/
$records = $crud->rawSelect("SELECT * FROM `en-kh` where english='a'");

/*** fetch only associative array of values ***/
$rows = $records->fetchAll(PDO::FETCH_ASSOC);

/*** display the records ***/
foreach($rows as $row)
{
    foreach($row as $fieldname=>$value)
    {
        echo $fieldname.' = '.$value.'<br />';
    }
    echo '<hr />';
}
?>

但它显示我的角色这样的'????'

我在Stack Overflow上找到了这个链接,它看起来像我在PHP/MySQL中遇到的特殊字符一样的问题

它看起来和我的问题一样=>我试图修复它,但我仍然无法正常工作.

$this->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAME'utf8'");

谁能告诉我这是什么问题？我该如何纠正？

谢谢

Answer 1

你错过了一个S:它SET NAMES不是SET NAME:

$this->setAttribute(PDO::MYSQL_ATTR_INIT_COMMAND, "SET NAMES 'utf8'");

当然,你还需要取消评论.此外,PDO::MYSQL_ATTR_INIT_COMMAND 可以不设置与PDO::setAttribute()你已经建立了自己的数据库连接(常量名字说明了一切)之后,您在指定它的构造函数使用$driver_options参数,如下所示:

$this->db = new PDO($this->dsn, $this->username, $this->password, array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES 'utf8'"));

另一种方法是在连接后立即执行相同的查询:

$this->db = new PDO($this->dsn, $this->username, $this->password);
$this->db->exec("SET NAMES 'utf8';");