gistfile1.txt

$ find path_to_sourcedir/ -name '*.php' > cscope.files
$ cscope -b

$ cat ~/.vimrc
...
if has('cscope')
        nnoremap <Leader>s :<C-u>scs find s <C-R>=expand("<cword>")<CR><CR>
        nnoremap <Leader>g :<C-u>scs find g <C-R>=expand("<cword>")<CR><CR>
        nnoremap <Leader>c :<C-u>scs find c <C-R>=expand("<cword>")<CR><CR>
        nnoremap <Leader>t :<C-u>scs find t <C-R>=expand("<cword>")<CR><CR>
        nnoremap <Leader>e :<C-u>scs find e <C-R>=expand("<cword>")<CR><CR>
        nnoremap <Leader>f :<C-u>scs find f <C-R>=expand("<cword>")<CR><CR>
        set cscopetagorder=0 cscopequickfix=s-,c-,i-,t-,e- nocscopetag
        if cscope_connection() == 0 && filereadable('cscope.out')
                cscope add cscope.out
        endif
endif