diff --git a/docs/manual/release-notes/rl-0.9.md b/docs/manual/release-notes/rl-0.9.md
index 37ff06d5..cba24109 100644
--- a/docs/manual/release-notes/rl-0.9.md
+++ b/docs/manual/release-notes/rl-0.9.md
@@ -563,4 +563,8 @@ https://github.com/gorbit99/codewindow.nvim
 
 [Poseidon](https://github.com/poseidon-rises)
 
+[PHPStan]: https://github.com/phpstan/phpstan
+
+- Add [PHPStan] as a formatter for `vim.languages.php`.
+
 <!-- vim: set textwidth=80: -->
diff --git a/modules/plugins/languages/php.nix b/modules/plugins/languages/php.nix
index 38249ee1..69335429 100644
--- a/modules/plugins/languages/php.nix
+++ b/modules/plugins/languages/php.nix
@@ -11,7 +11,7 @@
   inherit (lib.modules) mkIf mkMerge;
   inherit (lib.types) enum int attrs listOf;
   inherit (lib.nvim.lua) toLuaObject;
-  inherit (lib.nvim.types) mkGrammarOption;
+  inherit (lib.nvim.types) mkGrammarOption diagnostics;
   inherit (lib.nvim.attrsets) mapListToAttrs;
 
   cfg = config.vim.languages.php;
@@ -33,6 +33,14 @@
       command = "${pkgs.php84Packages.php-cs-fixer}/bin/php-cs-fixer";
     };
   };
+
+  defaultDiagnosticsProvider = ["phpstan"];
+
+  diagnosticsProviders = {
+    phpstan = {
+      config.cmd = getExe pkgs.phpstan;
+    };
+  };
 in {
   options.vim.languages.php = {
     enable = mkEnableOption "PHP language support";
@@ -103,6 +111,21 @@ in {
         };
       };
     };
+
+    extraDiagnostics = {
+      enable =
+        mkEnableOption "extra PHP diagnostics"
+        // {
+          default = config.vim.languages.enableExtraDiagnostics;
+          defaultText = literalExpression "config.vim.languages.enableExtraDiagnostic";
+        };
+
+      types = diagnostics {
+        langDesc = "PHP";
+        inherit diagnosticsProviders;
+        inherit defaultDiagnosticsProvider;
+      };
+    };
   };
 
   config = mkIf cfg.enable (mkMerge [
@@ -154,5 +177,15 @@ in {
         };
       };
     })
+
+    (mkIf cfg.extraDiagnostics.enable {
+      vim.diagnostics.nvim-lint = {
+        enable = true;
+        linters_by_ft.php = cfg.extraDiagnostics.types;
+        linters =
+          mkMerge (map (name: {${name} = diagnosticsProviders.${name}.config;})
+            cfg.extraDiagnostics.types);
+      };
+    })
   ]);
 }