diff --git a/pkgs/development/interpreters/php/generic.nix b/pkgs/development/interpreters/php/generic.nix
index d60d0cdf1fd1..cee1e833f9a6 100644
--- a/pkgs/development/interpreters/php/generic.nix
+++ b/pkgs/development/interpreters/php/generic.nix
@@ -271,8 +271,8 @@ let
 
               ./buildconf --copy --force
 
-              if test -f $src/genfiles; then
-                ./genfiles
+              if [ -f "scripts/dev/genfiles" ]; then
+                ./scripts/dev/genfiles
               fi
             '' + lib.optionalString stdenv.isDarwin ''
               substituteInPlace configure --replace "-lstdc++" "-lc++"
diff --git a/pkgs/top-level/php-packages.nix b/pkgs/top-level/php-packages.nix
index f60ae14cf585..2e810ca09927 100644
--- a/pkgs/top-level/php-packages.nix
+++ b/pkgs/top-level/php-packages.nix
@@ -31,6 +31,7 @@
 , pam
 , pcre2
 , postgresql
+, bison
 , re2c
 , readline
 , rsync
@@ -101,14 +102,22 @@ lib.makeScope pkgs.newScope (self: with self; {
         autoconf
         pkg-config
         re2c
+        bison
       ];
 
       inherit configureFlags internalDeps buildInputs zendExtension doCheck;
 
       preConfigurePhases = [
+        "genfiles"
         "cdToExtensionRootPhase"
       ];
 
+      genfiles = ''
+        if [ -f "scripts/dev/genfiles" ]; then
+          ./scripts/dev/genfiles
+        fi
+      '';
+
       cdToExtensionRootPhase = ''
         # Go to extension source root.
         cd "ext/${extName}"