diff --git a/src/Symfony/Component/DependencyInjection/CHANGELOG.md b/src/Symfony/Component/DependencyInjection/CHANGELOG.md
index 32f934eef458..9935b8a58052 100644
--- a/src/Symfony/Component/DependencyInjection/CHANGELOG.md
+++ b/src/Symfony/Component/DependencyInjection/CHANGELOG.md
@@ -6,6 +6,8 @@ CHANGELOG
 
  * added `%env(trim:...)%` processor to trim a string value
  * added `%env(default:param_name:...)%` processor to fallback to a parameter or to null when using `%env(default::...)%`
+ * added `%env(url:...)%` processor to convert an URL or DNS into an array of components
+ * added `%env(query_string:...)%` processor to convert a query string into an array of key values
  * added support for deprecating aliases
  * made `ContainerParametersResource` final and not implement `Serializable` anymore
  * added `ReverseContainer`: a container that turns services back to their ids
diff --git a/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php b/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
index d734cf5b8fc1..834ca51f3c76 100644
--- a/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
+++ b/src/Symfony/Component/DependencyInjection/EnvVarProcessor.php
@@ -41,6 +41,8 @@ public static function getProvidedTypes()
             'int' => 'int',
             'json' => 'array',
             'key' => 'bool|int|float|string|array',
+            'url' => 'array',
+            'query_string' => 'array',
             'resolve' => 'string',
             'default' => 'bool|int|float|string|array',
             'string' => 'string',
@@ -183,6 +185,37 @@ public function getEnv($prefix, $name, \Closure $getEnv)
             return $env;
         }
 
+        if ('url' === $prefix) {
+            $parsedEnv = parse_url($env);
+
+            if (false === $parsedEnv) {
+                throw new RuntimeException(sprintf('Invalid URL in env var "%s"', $name));
+            }
+            if (!isset($parsedEnv['scheme'], $parsedEnv['host'])) {
+                throw new RuntimeException(sprintf('Invalid URL env var "%s": schema and host expected, %s given.', $name, $env));
+            }
+            $parsedEnv += [
+                'port' => null,
+                'user' => null,
+                'pass' => null,
+                'path' => null,
+                'query' => null,
+                'fragment' => null,
+            ];
+
+            // remove the '/' separator
+            $parsedEnv['path'] = '/' === $parsedEnv['path'] ? null : substr($parsedEnv['path'], 1);
+
+            return $parsedEnv;
+        }
+
+        if ('query_string' === $prefix) {
+            $queryString = parse_url($env, PHP_URL_QUERY) ?: $env;
+            parse_str($queryString, $result);
+
+            return $result;
+        }
+
         if ('resolve' === $prefix) {
             return preg_replace_callback('/%%|%([^%\s]+)%/', function ($match) use ($name) {
                 if (!isset($match[1])) {
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
index f376165dfc0a..bcb8e2473c92 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RegisterEnvVarProcessorsPassTest.php
@@ -39,6 +39,8 @@ public function testSimpleProcessor()
             'int' => ['int'],
             'json' => ['array'],
             'key' => ['bool', 'int', 'float', 'string', 'array'],
+            'url' => ['array'],
+            'query_string' => ['array'],
             'resolve' => ['string'],
             'default' => ['bool', 'int', 'float', 'string', 'array'],
             'string' => ['string'],
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 828439969ef3..fa921f14b1c4 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -497,6 +497,52 @@ public function testDumpedDefaultEnvParameters()
         $this->assertSame('foobaz', $container->getParameter('hello-bar'));
     }
 
+    public function testDumpedUrlEnvParameters()
+    {
+        $container = new ContainerBuilder();
+        $container->setParameter('env(foo)', 'postgres://user@localhost:5432/database?sslmode=disable');
+        $container->setParameter('hello', '%env(url:foo)%');
+        $container->compile();
+
+        $dumper = new PhpDumper($container);
+        $dumper->dump();
+
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_url_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_UrlParameters']));
+
+        require self::$fixturesPath.'/php/services_url_env.php';
+        $container = new \Symfony_DI_PhpDumper_Test_UrlParameters();
+        $this->assertSame([
+            'scheme' => 'postgres',
+            'host' => 'localhost',
+            'port' => 5432,
+            'user' => 'user',
+            'path' => 'database',
+            'query' => 'sslmode=disable',
+            'pass' => null,
+            'fragment' => null,
+        ], $container->getParameter('hello'));
+    }
+
+    public function testDumpedQueryEnvParameters()
+    {
+        $container = new ContainerBuilder();
+        $container->setParameter('env(foo)', 'foo=bar&baz[]=qux');
+        $container->setParameter('hello', '%env(query_string:foo)%');
+        $container->compile();
+
+        $dumper = new PhpDumper($container);
+        $dumper->dump();
+
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_query_string_env.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_QueryStringParameters']));
+
+        require self::$fixturesPath.'/php/services_query_string_env.php';
+        $container = new \Symfony_DI_PhpDumper_Test_QueryStringParameters();
+        $this->assertSame([
+            'foo' => 'bar',
+            'baz' => ['qux'],
+        ], $container->getParameter('hello'));
+    }
+
     public function testDumpedJsonEnvParameters()
     {
         $container = new ContainerBuilder();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_query_string_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_query_string_env.php
new file mode 100644
index 000000000000..e69a22b12931
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_query_string_env.php
@@ -0,0 +1,124 @@
+<?php
+
+use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\LogicException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
+
+/**
+ * This class has been auto-generated
+ * by the Symfony Dependency Injection Component.
+ *
+ * @final since Symfony 3.3
+ */
+class Symfony_DI_PhpDumper_Test_QueryStringParameters extends Container
+{
+    private $parameters;
+    private $targetDirs = [];
+
+    public function __construct()
+    {
+        $this->parameters = $this->getDefaultParameters();
+
+        $this->services = $this->privates = [];
+
+        $this->aliases = [];
+    }
+
+    public function compile()
+    {
+        throw new LogicException('You cannot compile a dumped container that was already compiled.');
+    }
+
+    public function isCompiled()
+    {
+        return true;
+    }
+
+    public function getRemovedIds()
+    {
+        return [
+            'Psr\\Container\\ContainerInterface' => true,
+            'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
+        ];
+    }
+
+    public function getParameter($name)
+    {
+        $name = (string) $name;
+
+        if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
+            throw new InvalidArgumentException(sprintf('The parameter "%s" must be defined.', $name));
+        }
+        if (isset($this->loadedDynamicParameters[$name])) {
+            return $this->loadedDynamicParameters[$name] ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+        }
+
+        return $this->parameters[$name];
+    }
+
+    public function hasParameter($name)
+    {
+        $name = (string) $name;
+
+        return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
+    }
+
+    public function setParameter($name, $value)
+    {
+        throw new LogicException('Impossible to call set() on a frozen ParameterBag.');
+    }
+
+    public function getParameterBag()
+    {
+        if (null === $this->parameterBag) {
+            $parameters = $this->parameters;
+            foreach ($this->loadedDynamicParameters as $name => $loaded) {
+                $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+            }
+            $this->parameterBag = new FrozenParameterBag($parameters);
+        }
+
+        return $this->parameterBag;
+    }
+
+    private $loadedDynamicParameters = [
+        'hello' => false,
+    ];
+    private $dynamicParameters = [];
+
+    /**
+     * Computes a dynamic parameter.
+     *
+     * @param string $name The name of the dynamic parameter to load
+     *
+     * @return mixed The value of the dynamic parameter
+     *
+     * @throws InvalidArgumentException When the dynamic parameter does not exist
+     */
+    private function getDynamicParameter($name)
+    {
+        switch ($name) {
+            case 'hello': $value = $this->getEnv('query_string:foo'); break;
+            default: throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
+        }
+        $this->loadedDynamicParameters[$name] = true;
+
+        return $this->dynamicParameters[$name] = $value;
+    }
+
+    /**
+     * Gets the default parameters.
+     *
+     * @return array An array of the default parameters
+     */
+    protected function getDefaultParameters()
+    {
+        return [
+            'env(foo)' => 'foo=bar&baz[]=qux',
+        ];
+    }
+}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_url_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_url_env.php
new file mode 100644
index 000000000000..bd0d9105d7cc
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_url_env.php
@@ -0,0 +1,124 @@
+<?php
+
+use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\LogicException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
+
+/**
+ * This class has been auto-generated
+ * by the Symfony Dependency Injection Component.
+ *
+ * @final since Symfony 3.3
+ */
+class Symfony_DI_PhpDumper_Test_UrlParameters extends Container
+{
+    private $parameters;
+    private $targetDirs = [];
+
+    public function __construct()
+    {
+        $this->parameters = $this->getDefaultParameters();
+
+        $this->services = $this->privates = [];
+
+        $this->aliases = [];
+    }
+
+    public function compile()
+    {
+        throw new LogicException('You cannot compile a dumped container that was already compiled.');
+    }
+
+    public function isCompiled()
+    {
+        return true;
+    }
+
+    public function getRemovedIds()
+    {
+        return [
+            'Psr\\Container\\ContainerInterface' => true,
+            'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
+        ];
+    }
+
+    public function getParameter($name)
+    {
+        $name = (string) $name;
+
+        if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
+            throw new InvalidArgumentException(sprintf('The parameter "%s" must be defined.', $name));
+        }
+        if (isset($this->loadedDynamicParameters[$name])) {
+            return $this->loadedDynamicParameters[$name] ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+        }
+
+        return $this->parameters[$name];
+    }
+
+    public function hasParameter($name)
+    {
+        $name = (string) $name;
+
+        return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
+    }
+
+    public function setParameter($name, $value)
+    {
+        throw new LogicException('Impossible to call set() on a frozen ParameterBag.');
+    }
+
+    public function getParameterBag()
+    {
+        if (null === $this->parameterBag) {
+            $parameters = $this->parameters;
+            foreach ($this->loadedDynamicParameters as $name => $loaded) {
+                $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+            }
+            $this->parameterBag = new FrozenParameterBag($parameters);
+        }
+
+        return $this->parameterBag;
+    }
+
+    private $loadedDynamicParameters = [
+        'hello' => false,
+    ];
+    private $dynamicParameters = [];
+
+    /**
+     * Computes a dynamic parameter.
+     *
+     * @param string $name The name of the dynamic parameter to load
+     *
+     * @return mixed The value of the dynamic parameter
+     *
+     * @throws InvalidArgumentException When the dynamic parameter does not exist
+     */
+    private function getDynamicParameter($name)
+    {
+        switch ($name) {
+            case 'hello': $value = $this->getEnv('url:foo'); break;
+            default: throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
+        }
+        $this->loadedDynamicParameters[$name] = true;
+
+        return $this->dynamicParameters[$name] = $value;
+    }
+
+    /**
+     * Gets the default parameters.
+     *
+     * @return array An array of the default parameters
+     */
+    protected function getDefaultParameters()
+    {
+        return [
+            'env(foo)' => 'postgres://user@localhost:5432/database?sslmode=disable',
+        ];
+    }
+}