Lua scandir implementation

scandir.lua

-- Lua implementation of PHP scandir function
-- special thanks to:
-- rhoster (https://stackoverflow.com/users/974053/rhoster)
-- ulmangt (https://stackoverflow.com/users/1212363/ulmangt)
function scandir(directory)
    local i, t, popen = 0, {}, io.popen
    local pfile = popen('ls -a "'..directory..'"')
    for filename in pfile:lines() do
        i = i + 1
        t[i] = filename
    end
    pfile:close()
    return t
end