可捕获的致命错误：__PHP_Incomplete_Class类的对象

Question

i get this error

Catchable fatal error: Object of class __PHP_Incomplete_Class could not be converted to string in user.php on line 248 this is the line

  function loadUser($userID)
  {
  global $db;   
    $res = $db->getrow("SELECT * FROM `{$this->dbTable}` WHERE `{$this->tbFields['userID']}` = '".$this->escape($userID)."' LIMIT 1");
    if ( !$res )
        return false;
    $this->userData = $res;
    $this->userID = $userID;
    $_SESSION[$this->sessionVariable] = $this->userID;
    return true;
  }

see

var_dump($_SESSION); 

array(1) { ["user"]=> &object(__PHP_Incomplete_Class)#1 (12) { ["__PHP_Incomplete_Class_Name"]=> string(11) "jooria_user" ["dbTable"]=> string(5) "users" ["sessionVariable"]=> string(4) "user" } }

Answer 1

Is this an object stored in session? Have you declared your class before retrieving the object from session?

In any case, my guess is that you're missing a class declaration somewhere.

EDIT: Your class jooria_user is not declared before use. That is why you get that error.

Say you have this:

<?php
session_start();
class A {}
$a = new A;
$_SESSION['A'] = $a;

Then you try to access it in this script:

<?php
session_start();
$a = $_SESSION['A'];
var_dump($a);

/* outputs:
      object(__PHP_Incomplete_Class)#1 (1) {
        ["__PHP_Incomplete_Class_Name"]=>
        string(1) "A"
      }
*/

Now if you do that instead:

<?php
class A {} // declares the class here
session_start();
$a = $_SESSION['A'];
var_dump($a);

/* outputs:
      object(A)#1 (1) {
      }
*/

Answer 2

Looks like the provided function-argument $userID is an object and the error occurs here:

$this->escape($userID)

(I don't see any further string-operations that could force such an error).

So check out what's the argument you call loadUser() with.

Answer 3

First I'd make sure all { } braces have pairs in the right place. A } missing from the last line would be my guess.