On Wed, Aug 4, 2010 at 7:06 PM, Dan Gayle <dangayle at gmail.com> wrote: > I assume that passing a reference is an attempt to save memory, but in > PHP 5 aren't objects automatically passed by reference? What is the > benefit, if any, of this style of callback? > There is no benefit. It's just for PHP4 compatibility. -- http://scribu.net