I'm evaluating PhpED and I'm loving it more every minute. It's rich with features to make the task of writing and debugging php codes easy.

One disappointment: The other editor I'm accustomed to had little vertical lines connecting the beginning of lines containing matching brackets. This significantly improves the readability of the code and it's hard to imagine writing codes without that.

Could this feature be considered for addition?

PhpED has the matching brackets feature, only not with lines. By default it only makes the other bracket bold which doesn't really stand out.
You should probably open the options and change that under Editor > Syntax Colors. The item is "Matched brackets"

Yeah I've seen that. Not quite the same. With the lines you can see all your matching brackets at a glance and it's easier to follow especially if you have to scroll. Thanks though...

I would probably use this feature if it was implemented.

Better be an option though.