PHP尝试获取有效对象的非对象属性

Question

I have the following problem: I'm iterating through an array of valid objects using foreach. When trying to access the resulting objects or their properties I am getting the notice I would be trying to access a non-object.

Here is the code:

$schema = json_decode($_POST['d']);
foreach ($schema->node as $node) {
    var_dump($node);
    if ($node->status == 1) {
        $data = $node->id;
    }
}

var_dump outputs the following:

object(stdClass)#5 (6) {
  ["status"]=>
  int(0)
  ["id"]=>
  int(1)
  ["title"]=>
  string(6) "Sensor"
  ["script"]=>
  string(24) "from eZness import swag;"
  ["x"]=>
  int(60)
  ["y"]=>
  int(80)
}

Thanks in advance.

UPDATE:

$schema = json_decode($_POST['d']);
foreach ($schema->node as $node) {
    var_dump($node);
    echo $node->status; //Funnily this works
    $status = $node->status; //while this doesn't
    if ($node->status == 1) { //and this doesn't as well
        $data = $node->id;
    }
}

But when removing the var_dump even the echo doesn't work anymore.

UPDATE: Resolved. Had a look at the client part of the application, there was a problem with pushing NULL values in the $schema->node array which of course are non-objects.

Answer 1

You are trying to access $node->data, which does not exist.