dynamic db config

database/db.php

@@ -1,3 +1,20 @@
 <?php
-$dbconn = pg_connect("host=localhost dbname=phpapi");
+$dbconn = null;
+if(!getenv('DATABASE_URL')){
+    $connectionConfig = parse_url(getenv('DATABASE_URL'));
+    $host = $connectionConfig['host'];
+    $user = $connectionConfig['user'];
+    $password = $connectionConfig['pass'];
+    $port = $connectionConfig['port'];
+    $dbname = trim($connectionConfig['path'],'/');
+    $dbconn = pg_connect(
+        "host=".$host." ".
+        "user=".$user." ".
+        "password=".$password." ".
+        "port=".$port." ".
+        "dbname=".$dbname
+    );
+} else {
+    $dbconn = pg_connect("host=localhost dbname=phpapi");
+}
 ?>