Description:
------------
I believe that this is a occurrence of #59322 which describes exactly the issue I am seeing, however, that bug is marked as fixed in the 1.9.0 release of the ibm_db2 module, while I am using 1.9.9 and seeing this error.

My test case is shown below. If that function is taken out of the class and run directly it runs without issue.

Test script:
---------------
class Test {
	public function run ( $conn ) {
		$stmt = db2_prepare( $conn, 'SELECT * FROM mytable WHERE id = ?' );

		$allanTest = 65;
		db2_bind_param( $stmt, 1, 'allanTest', DB2_PARAM_IN );

		db2_execute( $stmt );

		echo db2_stmt_errormsg();
		var_dump( $stmt );

		while($row = db2_fetch_assoc($stmt)){
			print_r( $row );
		}
	}
}

$t = new Test();
$t->run( $conn );

Expected result:
----------------
The parameters should be bound just like they are if executed outside of a class.

Actual result:
--------------
This is resulting in the following errors:

<br />
<b>Warning</b>:  db2_execute(): Value Not Bound in <b>/var/www/html/db2.php</b> on line <b>114</b><br />
<br />
<b>Warning</b>:  db2_execute(): Binding Error 3 in <b>/var/www/html/db2.php</b> on line <b>114</b><br />
resource(3) of type (DB2 Statement)
<br />