README.md                  |  9 +++++++++
 autoload/lsp/lsp.vim       | 16 ++++++++++++++--
 autoload/lsp/lspserver.vim |  6 +++++-
 doc/lsp.txt                | 19 +++++++++++++++++--

diff --git a/README.md b/README.md
index e3bfcdf1d6508d91b0b57744f9cc36727af9dad2..ce5bf9bae562aec98a0cc050be57253e49457a5b 100644
--- a/README.md
+++ b/README.md
@@ -69,6 +69,15 @@ 		\     #{
 		\	 filetype: ['fortran'],
 		\	 path: '/usr/local/bin/fortls',
 		\	 args: ['--nthreads=1', '--use_signature_help', '--hover_signature']
+		\      },
+		\     #{
+		\        filetype: ['php'],
+		\        path: '/usr/local/bin/intelephense',
+		\        args: ['--stdio'],
+		\        syncInit: v:true,
+		\        initializationOptions: {
+		\          licenceKey: 'xxxxxxxxxxxxxxx'
+		\        }
 		\      }
 		\   ]
    call LspAddServer(lspServers)
diff --git a/autoload/lsp/lsp.vim b/autoload/lsp/lsp.vim
index 8fbc9cf7386b4a5d13f33bdbbb038fcc7b1785a2..e2398cd80ea9fbdb74a4b668d3dbe4379dc339b9 100644
--- a/autoload/lsp/lsp.vim
+++ b/autoload/lsp/lsp.vim
@@ -492,6 +492,16 @@       args = server.args
     else
 
     endif
+
+    var initializationOptions: dict<any> = {}
+    if server->has_key('initializationOptions')
+      if server.initializationOptions->type() != v:t_dict
+        util.ErrMsg('Error: initializationOptions for LSP server ' .. server.initializationOptions .. ' is not a Dictionary')
+        return
+      endif
+      initializationOptions = server.initializationOptions
+    endif
+
     if server.omnicompl->type() != v:t_bool
       util.ErrMsg('Error: Setting of omnicompl ' .. server.omnicompl .. ' is not a Boolean')
       return
@@ -501,8 +511,10 @@     if !server->has_key('syncInit')
       server.syncInit = v:false
     endif
 
-    var lspserver: dict<any> = lserver.NewLspServer(server.path, args,
-						    server.syncInit)
+    var lspserver: dict<any> = lserver.NewLspServer(server.path,
+						    args,
+						    server.syncInit,
+						    initializationOptions)
 
     if server.filetype->type() == v:t_string
       LspAddServer(server.filetype, lspserver)
diff --git a/autoload/lsp/lspserver.vim b/autoload/lsp/lspserver.vim
index ad8e9f8fa3bb5fa2edafaa2b8efcf4fb0fe1881a..13436af1405fd3c0057155d7638aaa59bb4ad933 100644
--- a/autoload/lsp/lspserver.vim
+++ b/autoload/lsp/lspserver.vim
@@ -169,6 +169,9 @@ 	uri: util.LspFileToUri(curdir)
      }]
   initparams.trace = 'off'
   initparams.capabilities = clientCaps
+  if !empty(lspserver.initializationOptions)
+    initparams.initializationOptions = lspserver.initializationOptions
+  endif
   req.params->extend(initparams)
 
   lspserver.sendMessage(req)
@@ -1016,11 +1019,12 @@     echo k .. ": " .. lspserver.caps[k]->string()
   endfor
 enddef
 
-export def NewLspServer(path: string, args: list<string>, isSync: bool): dict<any>
+export def NewLspServer(path: string, args: list<string>, isSync: bool, initializationOptions: dict<any>): dict<any>
   var lspserver: dict<any> = {
     path: path,
     args: args,
     syncInit: isSync,
+    initializationOptions: initializationOptions,
     running: false,
     ready: false,
     job: v:none,
diff --git a/doc/lsp.txt b/doc/lsp.txt
index ccf282adbb5dad2942d5eb9cc129a15650ed8a2c..2678fe1a057b7fedd0da4ac4f2075985a95be404 100644
--- a/doc/lsp.txt
+++ b/doc/lsp.txt
@@ -157,7 +157,7 @@ installed in your system, update the 'path' in the above snippet
 appropriately.
 
 Another example, for adding the LSP servers for the C, C++, Golang, Rust, 
-Shell script and Vim file types: >
+Shell script, Vim script and PHP file types: >
 
    let lspServers = [
 		\     #{
@@ -186,7 +186,16 @@ 		\     #{
 		\	 filetype: ['vim'],
 		\	 path: '/usr/local/bin/vim-language-server',
 		\	 args: ['--stdio']
-		\     }
+		\     },
+		\     #{
+		\        filetype: ['php'],
+		\        path: '/usr/local/bin/intelephense',
+		\        args: ['--stdio'],
+		\        syncInit: v:true,
+		\        initializationOptions: {
+		\          licenceKey: 'xxxxxxxxxxxxxxx'
+		\        }
+		\      }
 		\   ]
    call LspAddServer(lspServers)
 <
@@ -208,6 +217,12 @@ 			message this should be set to 'v:true'. If this is set
 			to true, then a synchronous call is used to initialize
 			the LSP server, otherwise the server is initialized
 			asynchronously. By default this is set to 'v:false'.
+	initializationOptions
+			(Optional) for lsp servers (e.g. intelephense) some
+			additional initialization options may be required
+			or useful for initialization. Those can be provided in
+			this dictionary and if present will be transmitted to
+			the lsp server.
 
 The LSP servers are added using the LspAddServer() function. This function
 accepts a list of LSP servers with the above information.