I personally prefer PHPEclipse IDE as my primary development tool. But I really miss basic "replace everywhere in the project" refactoring there.
But very simple find/sed command can solve it easily:
find . -type f -name "*Controller.php" -print0 \
| xargs -0 sed -i 's/string1/string2/g'
So using this intelligently you can find references, renaming, removing and make any sort of manipulations with the source code.
BTW: you even can not remember all this parameters and attributes - just type it once and then call it through reverse-i-search.
Hope this helps.