Minimal configuration of lsp-zero used in the demo https://asciinema.org/a/636643 (doesn't include colorscheme)

init.lua

local lazypath = vim.fn.stdpath('data') .. '/lazy/lazy.nvim'

-- Auto-install lazy.nvim if not present
if not vim.loop.fs_stat(lazypath) then
  print('Installing lazy.nvim....')
  vim.fn.system({
    'git',
    'clone',
    '--filter=blob:none',
    'https://github.com/folke/lazy.nvim.git',
    '--branch=stable', -- latest stable release
    lazypath,
  })
  print('Done.')
end

vim.opt.rtp:prepend(lazypath)

require('lazy').setup({
  {'VonHeikemen/lsp-zero.nvim', branch = 'v3.x'},
  {'neovim/nvim-lspconfig'},
  {'hrsh7th/cmp-nvim-lsp'},
  {'hrsh7th/nvim-cmp'},
  {'L3MON4D3/LuaSnip'},
})

require('lsp-zero')
require('lspconfig').intelephense.setup({})

--- NOTE:
--- intelphense needs to be installed in your system.
--- you need nodejs. and then do: npm install -g intelephense
---
--- with this setup the only keybindings you'll get are the 
--- ones neovim enables by default: 
---
--- <Ctrl-]> : go to definition (use <Ctrl-t> to go back)
--- gq       : formats code in visual mode.
--- K        : (in neovim v0.10) shows documentation of symbol
---
--- the autocompletion menu uses neovim's default keybindings
---
--- <Ctrl-y> : confirms completion
--- <Ctrl-e> : cancel completion
--- <Down>   : navigate to next item on the list
--- <Up>     : navigate to previous item on the list
--- <Ctrl-n> : Go to next item, or trigger completion menu
--- <Ctrl-p> : Go to previous item, or trigger completion menu