diff --git a/pkgs/development/php-packages/wikidiff2/default.nix b/pkgs/development/php-packages/wikidiff2/default.nix
new file mode 100644
index 000000000000..cfef9cecbd17
--- /dev/null
+++ b/pkgs/development/php-packages/wikidiff2/default.nix
@@ -0,0 +1,29 @@
+{
+  lib,
+  buildPecl,
+  fetchFromGitHub,
+  pkg-config,
+  libthai,
+}:
+
+buildPecl rec {
+  pname = "wikidiff2";
+  version = "1.14.1";
+
+  src = fetchFromGitHub {
+    owner = "wikimedia";
+    repo = "mediawiki-php-wikidiff2";
+    tag = version;
+    hash = "sha256-UTOfLXv2QWdjThxfrPQDLB8Mqo4js6LzOKXePivdp9k=";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ libthai ];
+
+  meta = {
+    description = "PHP extension which formats changes between two input texts, producing HTML or JSON.";
+    license = lib.licenses.gpl2;
+    homepage = "https://www.mediawiki.org/wiki/Wikidiff2";
+    maintainers = with lib.maintainers; [ georgyo ];
+  };
+}
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index ea7031d03df8..e126070a5854 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -403,6 +403,8 @@ lib.makeScope pkgs.newScope (
 
         vld = callPackage ../development/php-packages/vld { };
 
+        wikidiff2 = callPackage ../development/php-packages/wikidiff2 { };
+
         xdebug = callPackage ../development/php-packages/xdebug { };
 
         yaml = callPackage ../development/php-packages/yaml { };