add working php 5.3

flake.nix

@@ -1,24 +0,0 @@
-{
-  description = "A flake using nixpkgs 18.09 with PHP";
-
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-18.09";
-  };
-
-  outputs = { self, nixpkgs }: 
-    let
-      system = "x86_64-linux";
-      pkgs = import nixpkgs {
-        inherit system;
-      };
-    in {
-      packages.${system} = {
-        default = pkgs.php;
-      };
-
-      devShell.${system} = pkgs.mkShell {
-        buildInputs = [ pkgs.php ];
-      };
-    };
-}
-

shell.nix

@@ -0,0 +1,55 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  openssl_1_0_2 = pkgs.stdenv.mkDerivation {
+    name = "openssl-1.0.2u";
+    src = pkgs.fetchurl {
+      url = "https://www.openssl.org/source/old/1.0.2/openssl-1.0.2u.tar.gz";
+      sha256 = "ecd0c6ffb493dd06707d38b14bb4d8c2288bb7033735606569d8f90f89669d16";
+    };
+    buildInputs = [ pkgs.perl ];
+    configurePhase = ''
+      ./config --prefix=$out shared
+    '';
+  };
+
+  php53 = pkgs.stdenv.mkDerivation {
+    name = "php-5.3.29";
+    src = pkgs.fetchurl {
+      url = "https://www.php.net/distributions/php-5.3.29.tar.bz2";
+      sha256 = "c4e1cf6972b2a9c7f2777a18497d83bf713cdbecabb65d3ff62ba441aebb0091";
+    };
+    buildInputs = with pkgs; [
+      autoconf
+      automake
+      bison
+      flex
+      libtool
+      re2c
+      zlib
+      libxml2
+      openssl_1_0_2
+      curl
+      pkg-config
+    ];
+    configureFlags = [
+      "--with-libxml-dir=${pkgs.libxml2.dev}"
+      "--with-openssl=${openssl_1_0_2}"
+      "--with-zlib=${pkgs.zlib.dev}"
+      "--with-curl=${pkgs.curl.dev}"
+    ];
+    CPPFLAGS = "-I${openssl_1_0_2}/include";
+    LDFLAGS = "-L${openssl_1_0_2}/lib";
+    preConfigure = ''
+      export PKG_CONFIG_PATH="${openssl_1_0_2}/lib/pkgconfig:$PKG_CONFIG_PATH"
+    '';
+  };
+in
+pkgs.mkShell {
+  buildInputs = [ php53 ];
+  shellHook = ''
+    echo "PHP 5.3 environment loaded"
+    php --version
+  '';
+}
+