am i mistaken in saying that the Regular Expression Replace feature does not support backreferences? (using version 3.3.1 on windows)

what i mean is, i would like to replace this pattern:
<(p|hr|div|span)/>

with this:
<\1 class="fooClass"/>

in english that would be, or is supposed to be, "find all p, hr, div, and span tags that do not have any attributes, and are self-closed tags, and add the class="fooClass" attribute."

if i use Regular Expression Find, and search for (for example) <[a-z]+/> this works fine. i can use that same pattern in Replace. but adding parentheses causes no matches to be found. does phpEd use a different syntax to specify subpatterns and backreferences? (i guess what I mean by different is, different from Perl.)

Yet, phped does not support this.
Hopefully, in a new version it will work much more conveniently.

thanks for the reply