diff --git a/pkgs/by-name/bl/blackfire/package.nix b/pkgs/by-name/bl/blackfire/package.nix
index d90289827fa29..da0ee24714b01 100644
--- a/pkgs/by-name/bl/blackfire/package.nix
+++ b/pkgs/by-name/bl/blackfire/package.nix
@@ -7,6 +7,7 @@
   curl,
   jq,
   common-updater-scripts,
+  php,
 }:
 
 stdenv.mkDerivation rec {
@@ -115,5 +116,6 @@ stdenv.mkDerivation rec {
       "x86_64-darwin"
       "aarch64-darwin"
     ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/interpreters/php/8.5.nix b/pkgs/development/interpreters/php/8.5.nix
new file mode 100644
index 0000000000000..905706b7fdebe
--- /dev/null
+++ b/pkgs/development/interpreters/php/8.5.nix
@@ -0,0 +1,58 @@
+{ callPackage, ... }@_args:
+
+let
+  base = callPackage ./generic.nix (
+    _args
+    // {
+      version = "8.5.1";
+      hash = "sha256-VfQoxCbnJBdS6pr/8WC7ZMMqkyHL1tF9HBRbjfiCNzc=";
+    }
+  );
+in
+base.withExtensions (
+  { all, ... }:
+  with all;
+  [
+    bcmath
+    calendar
+    curl
+    ctype
+    dom
+    exif
+    fileinfo
+    filter
+    ftp
+    gd
+    gettext
+    gmp
+    iconv
+    intl
+    ldap
+    mbstring
+    mysqli
+    mysqlnd
+    opcache
+    openssl
+    pcntl
+    pdo
+    pdo_mysql
+    pdo_odbc
+    pdo_pgsql
+    pdo_sqlite
+    pgsql
+    posix
+    readline
+    session
+    simplexml
+    sockets
+    soap
+    sodium
+    sysvsem
+    sqlite3
+    tokenizer
+    xmlreader
+    xmlwriter
+    zip
+    zlib
+  ]
+)
diff --git a/pkgs/development/interpreters/php/generic.nix b/pkgs/development/interpreters/php/generic.nix
index 6eb8ec5966803..57a0f772257b3 100644
--- a/pkgs/development/interpreters/php/generic.nix
+++ b/pkgs/development/interpreters/php/generic.nix
@@ -133,7 +133,8 @@ let
                   type = "${lib.optionalString (ext.zendExtension or false) "zend_"}extension";
                 in
                 lib.nameValuePair extName {
-                  text = "${type}=${ext}/lib/php/extensions/${extName}.so";
+                  text = lib.optionalString (ext.includeInPHPIniFile or true
+                  ) "${type}=${ext}/lib/php/extensions/${extName}.so";
                   deps = map getExtName phpDeps;
                 }
               ) (enabledExtensions ++ (getDepsRecursively enabledExtensions))
diff --git a/pkgs/development/php-packages/amqp/default.nix b/pkgs/development/php-packages/amqp/default.nix
index b27663e75875d..d5fe2952e76ef 100644
--- a/pkgs/development/php-packages/amqp/default.nix
+++ b/pkgs/development/php-packages/amqp/default.nix
@@ -3,6 +3,7 @@
   lib,
   rabbitmq-c,
   fetchFromGitHub,
+  php,
 }:
 
 let
@@ -29,5 +30,6 @@ buildPecl {
     license = lib.licenses.php301;
     homepage = "https://github.com/php-amqp/php-amqp";
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/apcu/default.nix b/pkgs/development/php-packages/apcu/default.nix
index 6a63f1bfb3227..09219983681a3 100644
--- a/pkgs/development/php-packages/apcu/default.nix
+++ b/pkgs/development/php-packages/apcu/default.nix
@@ -3,6 +3,7 @@
   lib,
   pcre2,
   fetchFromGitHub,
+  php,
 }:
 
 let
@@ -15,8 +16,8 @@ buildPecl {
   src = fetchFromGitHub {
     owner = "krakjoe";
     repo = "apcu";
-    rev = "v${version}";
-    sha256 = "sha256-kf1d+WLpwhzQVn9pnkXtPPTXI5XaAuIAReI6rDGypB8=";
+    tag = "v${version}";
+    hash = "sha256-kf1d+WLpwhzQVn9pnkXtPPTXI5XaAuIAReI6rDGypB8=";
   };
 
   buildInputs = [ pcre2 ];
@@ -33,5 +34,6 @@ buildPecl {
     homepage = "https://pecl.php.net/package/APCu";
     license = lib.licenses.php301;
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/ast/default.nix b/pkgs/development/php-packages/ast/default.nix
index 19dd3e837bf64..a56c4e11c9c90 100644
--- a/pkgs/development/php-packages/ast/default.nix
+++ b/pkgs/development/php-packages/ast/default.nix
@@ -2,6 +2,7 @@
   buildPecl,
   lib,
   fetchFromGitHub,
+  php,
 }:
 
 let
@@ -24,5 +25,6 @@ buildPecl {
     license = lib.licenses.bsd3;
     homepage = "https://pecl.php.net/package/ast";
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/gnupg/default.nix b/pkgs/development/php-packages/gnupg/default.nix
index 9cfa7e0eaafbe..e62bf571686ae 100644
--- a/pkgs/development/php-packages/gnupg/default.nix
+++ b/pkgs/development/php-packages/gnupg/default.nix
@@ -52,7 +52,7 @@ buildPecl {
 
   meta = {
     changelog = "https://github.com/php-gnupg/php-gnupg/releases/tag/gnupg-${version}";
-    broken = lib.versionOlder php.version "8.1"; # Broken on PHP older than 8.1.
+    broken = lib.versionOlder php.version "8.1" || lib.versionAtLeast php.version "8.5";
     description = "PHP wrapper for GpgME library that provides access to GnuPG";
     license = lib.licenses.bsd3;
     homepage = "https://pecl.php.net/package/gnupg";
diff --git a/pkgs/development/php-packages/imap/default.nix b/pkgs/development/php-packages/imap/default.nix
index b37e6e6c6b286..c7b9d33b2517f 100644
--- a/pkgs/development/php-packages/imap/default.nix
+++ b/pkgs/development/php-packages/imap/default.nix
@@ -9,6 +9,7 @@
   pcre2,
   pkg-config,
   uwimap,
+  php,
 }:
 
 let
@@ -56,5 +57,6 @@ buildPecl {
     homepage = "https://pecl.php.net/package/imap";
     license = lib.licenses.php301;
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/ioncube-loader/default.nix b/pkgs/development/php-packages/ioncube-loader/default.nix
index 07c941094c6e0..9362a6214754e 100644
--- a/pkgs/development/php-packages/ioncube-loader/default.nix
+++ b/pkgs/development/php-packages/ioncube-loader/default.nix
@@ -54,5 +54,6 @@ stdenv.mkDerivation {
       "aarch64-linux"
       "aarch64-darwin"
     ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/openswoole/default.nix b/pkgs/development/php-packages/openswoole/default.nix
index f46c8b6a8f9f9..2dec6017a6724 100644
--- a/pkgs/development/php-packages/openswoole/default.nix
+++ b/pkgs/development/php-packages/openswoole/default.nix
@@ -35,6 +35,6 @@ buildPecl {
       You can use the sync or async, Coroutine API to write whole applications or create thousands of light weight Coroutines within one Linux process.
     '';
     teams = [ lib.teams.php ];
-    broken = lib.versionOlder php.version "8.2";
+    broken = lib.versionOlder php.version "8.2" || lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/pdo_oci/default.nix b/pkgs/development/php-packages/pdo_oci/default.nix
index 4815ed293c26b..1600cfb69d524 100644
--- a/pkgs/development/php-packages/pdo_oci/default.nix
+++ b/pkgs/development/php-packages/pdo_oci/default.nix
@@ -25,5 +25,6 @@ buildPecl {
     license = lib.licenses.php301;
     homepage = "https://pecl.php.net/package/pdo_oci";
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/pdo_sqlsrv/default.nix b/pkgs/development/php-packages/pdo_sqlsrv/default.nix
index b691d99487cbd..451942fe56044 100644
--- a/pkgs/development/php-packages/pdo_sqlsrv/default.nix
+++ b/pkgs/development/php-packages/pdo_sqlsrv/default.nix
@@ -22,5 +22,6 @@ buildPecl {
     license = lib.licenses.mit;
     homepage = "https://github.com/Microsoft/msphpsql";
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/phan/default.nix b/pkgs/development/php-packages/phan/default.nix
index f40573f3b965a..f104081eab232 100644
--- a/pkgs/development/php-packages/phan/default.nix
+++ b/pkgs/development/php-packages/phan/default.nix
@@ -29,5 +29,6 @@
       mainProgram = "phan";
       maintainers = with lib.maintainers; [ apeschar ];
       teams = [ lib.teams.php ];
+      broken = lib.versionAtLeast php.version "8.5";
     };
   })
diff --git a/pkgs/development/php-packages/spx/default.nix b/pkgs/development/php-packages/spx/default.nix
index a6fb3c8f35639..62dfc75d6939f 100644
--- a/pkgs/development/php-packages/spx/default.nix
+++ b/pkgs/development/php-packages/spx/default.nix
@@ -3,6 +3,7 @@
   lib,
   fetchFromGitHub,
   zlib,
+  php,
 }:
 
 let
@@ -15,7 +16,7 @@ buildPecl {
   src = fetchFromGitHub {
     owner = "NoiseByNorthwest";
     repo = "php-spx";
-    rev = "v${version}";
+    tag = "v${version}";
     hash = "sha256-P53g/o4i+QETWdErZaGA3AREvnr8kL9h0B1BMQlKdFA=";
   };
 
@@ -30,5 +31,6 @@ buildPecl {
     homepage = "https://github.com/NoiseByNorthwest/php-spx";
     license = lib.licenses.php301;
     maintainers = with lib.maintainers; [ piotrkwiecinski ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/development/php-packages/swoole/default.nix b/pkgs/development/php-packages/swoole/default.nix
index bb86442b4bc22..a1a902b31f430 100644
--- a/pkgs/development/php-packages/swoole/default.nix
+++ b/pkgs/development/php-packages/swoole/default.nix
@@ -33,5 +33,6 @@ buildPecl {
     homepage = "https://www.swoole.com";
     license = lib.licenses.asl20;
     teams = [ lib.teams.php ];
+    broken = lib.versionAtLeast php.version "8.5";
   };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 1ce0720b47d29..c24c4001b14a3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5573,6 +5573,16 @@ with pkgs;
   phpExtensions = recurseIntoAttrs php.extensions;
   phpPackages = recurseIntoAttrs php.packages;
 
+  # Import PHP85 interpreter, extensions and packages
+  php85 = callPackage ../development/interpreters/php/8.5.nix {
+    stdenv = if stdenv.cc.isClang then llvmPackages.stdenv else stdenv;
+    pcre2 = pcre2.override {
+      withJitSealloc = false; # See https://bugs.php.net/bug.php?id=78927 and https://bugs.php.net/bug.php?id=78630
+    };
+  };
+  php85Extensions = recurseIntoAttrs php85.extensions;
+  php85Packages = recurseIntoAttrs php85.packages;
+
   # Import PHP84 interpreter, extensions and packages
   php84 = callPackage ../development/interpreters/php/8.4.nix {
     stdenv = if stdenv.cc.isClang then llvmPackages.stdenv else stdenv;
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index 5a2781659262a..4c303f5eaf2a9 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -18,6 +18,7 @@
   gmp,
   html-tidy,
   icu73,
+  lexbor,
   libffi,
   libiconv,
   libkrb5,
@@ -30,7 +31,6 @@
   nix-update-script,
   oniguruma,
   openldap,
-  openssl_1_1,
   openssl,
   pam,
   pcre2,
@@ -58,6 +58,43 @@ lib.makeScope pkgs.newScope (
     builders = import ../build-support/php/builders {
       inherit callPackages callPackage buildPecl;
     };
+
+    lexborForPHP = (
+      lexbor.overrideAttrs (oldAttrs: {
+        env.NIX_CFLAGS_COMPILE =
+          (oldAttrs.NIX_CFLAGS_COMPILE or "")
+          + toString [
+            "-Wno-error=int-conversion"
+          ];
+        # TODO: Find a way to get these patches from `php` src.
+        patches = (oldAttrs.patches or [ ]) ++ [
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0001-Expose-line-and-column-information-for-use-in-PHP.patch";
+            hash = "sha256-xHz0JG+95D+aaUwVZRZvbibt+uMGiXLjlsZxyPnybiQ=";
+          })
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0002-Track-implied-added-nodes-for-options-use-in-PHP.patch";
+            hash = "sha256-8AWN46UZ0xXcUcPeO+fQ4/KZ5RfX8kGcWTYiSdRxtjE=";
+          })
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0003-Patch-utilities-and-data-structure-to-be-able-to-gen.patch";
+            hash = "sha256-L4b3zKRMzgeDgc6USurd0jLCQmONIpMzjBjaWbYsawI=";
+          })
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0004-Remove-unused-upper-case-tag-static-data.patch";
+            hash = "sha256-5SpBGUXGINhWQDdOtf/tjH8gPthL3e4mRHh7ZaophGY=";
+          })
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0005-Shrink-size-of-static-binary-search-tree.patch";
+            hash = "sha256-2Hhu6RGu5hBJjx+cfNsTiJQsuQy5KCcfvi3ed4Pzmv8=";
+          })
+          (fetchpatch {
+            url = "https://raw.githubusercontent.com/php/php-src/refs/heads/PHP-8.5.0/ext/lexbor/patches/0006-Patch-out-unused-CSS-style-code.patch";
+            hash = "sha256-aP6oAkw/CA+DdYlZRGhwJaKIuY6zt5IHFcxoz4x3xj8=";
+          })
+        ];
+      })
+    );
   in
   {
     buildPecl = callPackage ../build-support/php/build-pecl.nix {
@@ -113,6 +150,7 @@ lib.makeScope pkgs.newScope (
         zendExtension ? false,
         doCheck ? true,
         extName ? name,
+        includeInPHPIniFile ? true,
         ...
       }@args:
       stdenv.mkDerivation (
@@ -120,6 +158,7 @@ lib.makeScope pkgs.newScope (
         // {
           pname = "php-${name}";
           extensionName = extName;
+          inherit includeInPHPIniFile;
 
           outputs = [
             "out"
@@ -192,9 +231,13 @@ lib.makeScope pkgs.newScope (
             runHook preInstall
 
             mkdir -p $out/lib/php/extensions
+          ''
+          + lib.optionalString includeInPHPIniFile ''
             cp modules/${extName}.so $out/lib/php/extensions/${extName}.so
+          ''
+          + ''
             mkdir -p $dev/include
-            ${rsync}/bin/rsync -r --filter="+ */" \
+            ${lib.getExe rsync} -r --filter="+ */" \
                                   --filter="+ *.h" \
                                   --filter="- *" \
                                   --prune-empty-dirs \
@@ -278,8 +321,6 @@ lib.makeScope pkgs.newScope (
 
         ast = callPackage ../development/php-packages/ast { };
 
-        blackfire = callPackage ../by-name/bl/blackfire/php-probe.nix { };
-
         couchbase = callPackage ../development/php-packages/couchbase { };
 
         datadog_trace = callPackage ../development/php-packages/datadog_trace { };
@@ -406,6 +447,9 @@ lib.makeScope pkgs.newScope (
 
         zstd = callPackage ../development/php-packages/zstd { };
       }
+      // lib.optionalAttrs (lib.versionOlder php.version "8.5") {
+        blackfire = callPackage ../by-name/bl/blackfire/php-probe.nix { };
+      }
       // lib.optionalAttrs config.allowAliases {
         php-spx = throw "php-spx is deprecated, use spx instead";
         openssl-legacy = throw "openssl-legacy has been removed";
@@ -443,7 +487,11 @@ lib.makeScope pkgs.newScope (
             { name = "dba"; }
             {
               name = "dom";
-              buildInputs = [ libxml2 ];
+              internalDeps = lib.optionals (lib.versionAtLeast php.version "8.5") [ php.extensions.lexbor ];
+              buildInputs = [
+                libxml2
+                lexborForPHP
+              ];
               configureFlags = [
                 "--enable-dom"
               ];
@@ -585,13 +633,14 @@ lib.makeScope pkgs.newScope (
             }
             {
               name = "opcache";
+              includeInPHPIniFile = false;
               buildInputs = [
                 pcre2
               ]
-              ++ lib.optional (
+              ++ lib.optionals (
                 !stdenv.hostPlatform.isDarwin && lib.meta.availableOn stdenv.hostPlatform valgrind
-              ) valgrind.dev;
-              configureFlags = lib.optional php.ztsSupport "--disable-opcache-jit";
+              ) [ valgrind.dev ];
+              configureFlags = lib.optionals php.ztsSupport [ "--disable-opcache-jit" ];
               zendExtension = true;
               postPatch = lib.optionalString stdenv.hostPlatform.isDarwin ''
                 # Tests are flaky on darwin
@@ -756,6 +805,13 @@ lib.makeScope pkgs.newScope (
               name = "tokenizer";
               patches = [ ../development/interpreters/php/fix-tokenizer-php81.patch ];
             }
+            {
+              name = "uri";
+              includeInPHPIniFile = false;
+              buildInputs = [
+                lexborForPHP
+              ];
+            }
             {
               name = "xml";
               buildInputs = [ libxml2 ];
@@ -822,7 +878,7 @@ lib.makeScope pkgs.newScope (
               ];
             }
           ]
-          ++ lib.optionals (lib.versionOlder php.version "8.3") [
+          ++ lib.optionals (lib.versionOlder php.version "8.4") [
             # Using version from PECL on new PHP versions.
             {
               name = "imap";
@@ -839,6 +895,12 @@ lib.makeScope pkgs.newScope (
                 "--with-kerberos"
               ];
             }
+          ]
+          ++ lib.optionals (lib.versionAtLeast php.version "8.5") [
+            {
+              name = "lexbor";
+              includeInPHPIniFile = false;
+            }
           ];
 
           # Convert the list of attrs: