Description:
------------
Can't extend the method "bind_param" of the mysqli_stmt class without strict errors.

Through reflection I see that the method declaration has one declared and needed parameter:

-- Parameter #0: { Class: NULL Allows NULL: false Passed to by reference: false Is optional?: no }

What can I do to avoid this notice?

Reproduce code:
---------------
class myTry1 extends mysqli_stmt
{
    public function bind_param()
    {
    }
}
 
class myTry2 extends mysqli_stmt
{
    public function bind_param( $types )
    {
    }
}
 
class myTry3 extends mysqli_stmt
{
    public function bind_param( $types, $var1 )
    {
    }
}
 
class myTry4 extends mysqli_stmt
{
    public function bind_param( $types, &$var1 )
    {
    }
}

Expected result:
----------------
No errors with at least one ot these new classes.

Actual result:
--------------
Strict Notice Declaration of myTry1::bind_param() should be compatible with that of mysqli_stmt::bind_param() in...
Strict Notice Declaration of myTry2::bind_param() should be compatible with that of mysqli_stmt::bind_param() in...
Strict Notice Declaration of myTry3::bind_param() should be compatible with that of mysqli_stmt::bind_param() in...
Strict Notice Declaration of myTry4::bind_param() should be compatible with that of mysqli_stmt::bind_param() in...