PHP Object Programming questions, call to a member function Hello () on a non-object

PHP Object programming problem, call to a member function Hello () on a non-object

 
  
$instest = new test ();
$insobject = new Object ();
$insobject->objectvalue = "final";
$instest->test ();

Class test{
var $testValue = "Testvalueins";
function Test () {
Print_r ($insobject);
$insobject->hello ();
}
}

Class object{
var $objectValue = "original";
function Hello () {
Echo $objectValue;
}
}

?>

The error is as follows

notice:undefined Variable:insobject in C:\wamp\www\zhebo\test.php on line 11
Call Stack
notice:undefined Variable:insobject in C:\wamp\www\zhebo\test.php on line 12
Fatal Error:call to a member function Hello () on a non-object in C:\wamp\www\zhebo\test.php on line 12

What's the problem, how can you get to the method that references the other instance in the instance, or what better way to solve it?
I am in a hurry, I hope you can help. Thank you very much. Very urgent. The first time to use the idea of the object programming is not quite understand AH.

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------Solution--------------------
External variables cannot be accessed internally without passing or global declarations (objects are also used as vectors of variables)
This is the basic rule of PHP syntax, insurmountable

$insobject = new Object ();
$insobject->objectvalue = "final";

$instest = new test ($insobject);

$instest->test (); This is a constructor, which is generally not called

Class test{
  var $testValue = "Testvalueins";
  function test ($insobject) {
    Print_r ($insobject);
    $insobject->hello ();
  }
}

Class object{
  var $objectValue = "original";
  function Hello () {
    Echo $this->objectvalue; To access properties like this
  }
}

Object Object ([ObjectValue] = final) Final
------Solution--------------------
The call constructor is the same as new
is to return an instance of a class

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