<?php
// Example of bug in PHP class method passing $this incorrectly

class test1
{
  var $a;
  function test1(){$this->a=1;}
  function showMe()
  {
    // Since test3::showMe was called as a static method
    // This too should be a static method call with no $this
    echo 'In test1::showMe<hr>';
    echo 'Next 2 lines should fail since this method was not called from within this object<br>';
    echo '$this is of type '. get_class($this)." in test3::showMe<br>\n";
    echo "test1::showMe:a=".$this->a."<br>\n";
  }
  // Class member to test static method call
  function callMe()
  {
    echo 'In test1::callMe<hr>';
    echo '$this is of type '.get_class($this)."in test1::callMe<hr>\n";
    echo 'Calling class method test3::showMe from an object of type test1<br>';
    echo '$this should not be passed since test3::showMe does not exist in objects of type test1<hr>';
    // This is a static method call, since test1 objects
    // do not have a test3::showMe.
    test3::showMe();
  }
}

class test2 extends test1
{
  function showMe()
  {
    echo 'In test2::showMe<br>';
    echo "Next 2 lines should fail since objects of type test1 cannot pass \$this<hr>\n";
    echo '$this is of type '. get_class($this)." in test2::showMe<br>\n";
    echo "test2::showMe:a=".$this->a."<hr>\n";
    echo 'Calling parent::showMe<hr>';
    // Since test3::showMe was called as a static method
    // This too should be a static method call with no $this
    parent::showMe();
  }
}

class test3 extends test2
{
  function showMe()
  {
    echo 'In test3::showMe<br>';
    echo "Next 2 lines should fail since objects of type test1 cannot pass \$this<hr>\n";
    echo '$this is of type '. get_class($this)." in test3::showMe<br>\n";
    echo "test3::showMe:a=".$this->a."<hr>\n";
    echo 'Calling parent::showMe<hr>';
    // Since test3::showMe was called as a static method
    // This too should be a static method call with no $this
    parent::showMe();
  }
}

// object $a is of type test1
$a=new test1;
$a->callMe();

/* Results

In test1::callMe
--------------------------------------------------------------------------------
$this is of type test1in test1::callMe
--------------------------------------------------------------------------------
 Calling class method test3::showMe from an object of type test1
$this should not be passed since test3::showMe does not exist in objects of type test1
--------------------------------------------------------------------------------
In test3::showMe
Next 2 lines should fail since objects of type test1 cannot pass $this
--------------------------------------------------------------------------------
 $this is of type test1 in test3::showMe
test3::showMe:a=1
--------------------------------------------------------------------------------
 Calling parent::showMe
--------------------------------------------------------------------------------
In test2::showMe
Next 2 lines should fail since objects of type test1 cannot pass $this
--------------------------------------------------------------------------------
 $this is of type test1 in test2::showMe
test2::showMe:a=1
--------------------------------------------------------------------------------
 Calling parent::showMe
--------------------------------------------------------------------------------
In test1::showMe
--------------------------------------------------------------------------------
Next 2 lines should fail since this method was not called from within this object
$this is of type test1 in test3::showMe
test1::showMe:a=1


*/
?>