php: switch to nts by default

nixos/modules/services/web-servers/apache-httpd/default.nix

@@ -18,7 +18,7 @@ let
     sed -i $out/bin/apachectl -e 's|$HTTPD -t|$HTTPD -t -f /etc/httpd/httpd.conf|'
   '';
 
-  php = cfg.phpPackage.override { apacheHttpd = pkg; };
+  php = cfg.phpPackage.override { apxs2Support = true; apacheHttpd = pkg; };
 
   phpModuleName = let
     majorVersion = lib.versions.major (lib.getVersion php);
@@ -660,6 +660,13 @@ in
           `services.httpd.virtualHosts.<name>.useACMEHost` are mutually exclusive.
         '';
       }
+      {
+        assertion = cfg.enablePHP -> php.ztsSupport;
+        message = ''
+          The php package provided by `services.httpd.phpPackage` is not built with zts support. Please
+          ensure the php has zts support by settings `services.httpd.phpPackage = php.override { ztsSupport = true; }`
+        '';
+      }
     ] ++ map (name: mkCertOwnershipAssertion {
       inherit (cfg) group user;
       cert = config.security.acme.certs.${name};