diff --git a/best_practices/business-logic.rst b/best_practices/business-logic.rst
index 3fe88fa41b6..8f22e5efb22 100644
--- a/best_practices/business-logic.rst
+++ b/best_practices/business-logic.rst
@@ -340,6 +340,6 @@ Next: :doc:`/best_practices/controllers`
 .. _`full definition`: https://en.wikipedia.org/wiki/Business_logic
 .. _`Doctrine project`: http://www.doctrine-project.org/
 .. _`fixture class`: https://symfony.com/doc/current/bundles/DoctrineFixturesBundle/index.html#writing-simple-fixtures
-.. _`PSR-1`: http://www.php-fig.org/psr/psr-1/
-.. _`PSR-2`: http://www.php-fig.org/psr/psr-2/
+.. _`PSR-1`: https://www.php-fig.org/psr/psr-1/
+.. _`PSR-2`: https://www.php-fig.org/psr/psr-2/
 .. _`PHP-CS-Fixer`: https://github.com/FriendsOfPHP/PHP-CS-Fixer
diff --git a/best_practices/creating-the-project.rst b/best_practices/creating-the-project.rst
index 0504d414353..6aa9cdbffc2 100644
--- a/best_practices/creating-the-project.rst
+++ b/best_practices/creating-the-project.rst
@@ -182,6 +182,6 @@ the Symfony directory structure.
 Next: :doc:`/best_practices/configuration`
 
 .. _`Composer`: https://getcomposer.org/
-.. _`Phar extension`: http://php.net/manual/en/intro.phar.php
+.. _`Phar extension`: https://php.net/manual/en/intro.phar.php
 .. _`public checksums repository`: https://github.com/sensiolabs/checksums
 .. _`these steps`: http://fabien.potencier.org/signing-project-releases.html
diff --git a/bundles/best_practices.rst b/bundles/best_practices.rst
index 0b2828876b7..3fa8ae25bb5 100644
--- a/bundles/best_practices.rst
+++ b/bundles/best_practices.rst
@@ -492,9 +492,9 @@ Learn more
 * :doc:`/bundles/extension`
 * :doc:`/bundles/configuration`
 
-.. _`PSR-0`: http://www.php-fig.org/psr/psr-0/
-.. _`PSR-4`: http://www.php-fig.org/psr/psr-4/
-.. _`Semantic Versioning Standard`: http://semver.org/
+.. _`PSR-0`: https://www.php-fig.org/psr/psr-0/
+.. _`PSR-4`: https://www.php-fig.org/psr/psr-4/
+.. _`Semantic Versioning Standard`: https://semver.org/
 .. _`Packagist`: https://packagist.org/
-.. _`choose any license`: http://choosealicense.com/
+.. _`choose any license`: https://choosealicense.com/
 .. _`valid license identifier`: https://spdx.org/licenses/
diff --git a/components/class_loader.rst b/components/class_loader.rst
index 18283d83852..3dafacb7736 100644
--- a/components/class_loader.rst
+++ b/components/class_loader.rst
@@ -59,7 +59,7 @@ Learn More
     class_loader/class_loader
     class_loader/*
 
-.. _PSR-0: http://www.php-fig.org/psr/psr-0/
-.. _PSR-4: http://www.php-fig.org/psr/psr-4/
-.. _`autoloading mechanism`: http://php.net/manual/en/language.oop5.autoload.php
+.. _PSR-0: https://www.php-fig.org/psr/psr-0/
+.. _PSR-4: https://www.php-fig.org/psr/psr-4/
+.. _`autoloading mechanism`: https://php.net/manual/en/language.oop5.autoload.php
 .. _Packagist: https://packagist.org/packages/symfony/class-loader
diff --git a/components/class_loader/cache_class_loader.rst b/components/class_loader/cache_class_loader.rst
index df996f45629..cb0d1dd37d1 100644
--- a/components/class_loader/cache_class_loader.rst
+++ b/components/class_loader/cache_class_loader.rst
@@ -60,6 +60,6 @@ it is straightforward::
     // deactivates the original, non-cached loader if it was registered previously
     $loader->unregister();
 
-.. _APC:        http://php.net/manual/en/book.apc.php
+.. _APC:        https://php.net/manual/en/book.apc.php
 .. _autoloader: https://getcomposer.org/doc/01-basic-usage.md#autoloading
-.. _XCache:     http://xcache.lighttpd.net
+.. _XCache:     https://xcache.lighttpd.net
diff --git a/components/class_loader/class_loader.rst b/components/class_loader/class_loader.rst
index 5c290222b71..c6d37661a84 100644
--- a/components/class_loader/class_loader.rst
+++ b/components/class_loader/class_loader.rst
@@ -71,5 +71,5 @@ the ``doctrine-common`` directory. If not found, it will then fallback to
 the default ``Doctrine`` directory (the last one configured) before giving
 up. The order of the prefix registrations is significant in this case.
 
-.. _PEAR:  http://pear.php.net/manual/en/standards.naming.php
-.. _PSR-0: http://www.php-fig.org/psr/psr-0/
+.. _PEAR:  https://pear.php.net/manual/en/standards.naming.php
+.. _PSR-0: https://www.php-fig.org/psr/psr-0/
diff --git a/components/class_loader/class_map_generator.rst b/components/class_loader/class_map_generator.rst
index da1a9c73ab4..c060cc71a72 100644
--- a/components/class_loader/class_map_generator.rst
+++ b/components/class_loader/class_map_generator.rst
@@ -123,6 +123,6 @@ is the same as in the example above)::
         __DIR__.'/class_map.php'
     );
 
-.. _`PSR-0`: http://www.php-fig.org/psr/psr-0
-.. _`PSR-4`: http://www.php-fig.org/psr/psr-4
+.. _`PSR-0`: https://www.php-fig.org/psr/psr-0
+.. _`PSR-4`: https://www.php-fig.org/psr/psr-4
 .. _`Composer`: https://getcomposer.org
diff --git a/components/class_loader/map_class_loader.rst b/components/class_loader/map_class_loader.rst
index f9bd70abfa4..e6e464e771e 100644
--- a/components/class_loader/map_class_loader.rst
+++ b/components/class_loader/map_class_loader.rst
@@ -38,4 +38,4 @@ an instance of the ``MapClassLoader`` class::
 
     $loader->register();
 
-.. _PSR-0: http://www.php-fig.org/psr/psr-0/
+.. _PSR-0: https://www.php-fig.org/psr/psr-0/
diff --git a/components/class_loader/psr4_class_loader.rst b/components/class_loader/psr4_class_loader.rst
index dc66614892b..09d0af057e9 100644
--- a/components/class_loader/psr4_class_loader.rst
+++ b/components/class_loader/psr4_class_loader.rst
@@ -58,4 +58,4 @@ tell the class loader where to look for classes with the
 ``Symfony\Component\Yaml\`` namespace prefix. After registering the autoloader,
 the Yaml component is ready to be used.
 
-.. _PSR-4: http://www.php-fig.org/psr/psr-4/
+.. _PSR-4: https://www.php-fig.org/psr/psr-4/
diff --git a/components/console/logger.rst b/components/console/logger.rst
index cebd616bca9..279c324d135 100644
--- a/components/console/logger.rst
+++ b/components/console/logger.rst
@@ -103,4 +103,4 @@ constructor::
     );
     $logger = new ConsoleLogger($output, array(), $formatLevelMap);
 
-.. _PSR-3: http://www.php-fig.org/psr/psr-3/
+.. _PSR-3: https://www.php-fig.org/psr/psr-3/
diff --git a/components/event_dispatcher.rst b/components/event_dispatcher.rst
index 8a148af0fd7..345bcb7a41d 100644
--- a/components/event_dispatcher.rst
+++ b/components/event_dispatcher.rst
@@ -517,6 +517,6 @@ Learn More
 * :ref:`The kernel.event_subscriber tag <dic-tags-kernel-event-subscriber>`
 
 .. _Mediator: https://en.wikipedia.org/wiki/Mediator_pattern
-.. _Closures: http://php.net/manual/en/functions.anonymous.php
-.. _PHP callable: http://www.php.net/manual/en/language.pseudo-types.php#language.types.callback
+.. _Closures: https://php.net/manual/en/functions.anonymous.php
+.. _PHP callable: https://php.net/manual/en/language.pseudo-types.php#language.types.callback
 .. _Packagist: https://packagist.org/packages/symfony/event-dispatcher
diff --git a/components/finder.rst b/components/finder.rst
index 17033455074..410012d4a74 100644
--- a/components/finder.rst
+++ b/components/finder.rst
@@ -320,8 +320,8 @@ The contents of returned files can be read with
         // ...
     }
 
-.. _strtotime:    http://www.php.net/manual/en/datetime.formats.php
-.. _protocol:     http://www.php.net/manual/en/wrappers.php
-.. _Streams:      http://www.php.net/streams
-.. _IEC standard: http://physics.nist.gov/cuu/Units/binary.html
+.. _strtotime:    https://php.net/manual/en/datetime.formats.php
+.. _protocol:     https://php.net/manual/en/wrappers.php
+.. _Streams:      https://php.net/streams
+.. _IEC standard: https://physics.nist.gov/cuu/Units/binary.html
 .. _Packagist:    https://packagist.org/packages/symfony/finder
diff --git a/components/http_foundation/session_configuration.rst b/components/http_foundation/session_configuration.rst
index 66d0087189d..24854666878 100644
--- a/components/http_foundation/session_configuration.rst
+++ b/components/http_foundation/session_configuration.rst
@@ -314,6 +314,6 @@ without knowledge of the specific save handler.
     Before PHP 5.4, you can only proxy user-land save handlers but not
     native PHP save handlers.
 
-.. _`php.net/session.customhandler`: http://php.net/session.customhandler
-.. _`php.net/session.configuration`: http://php.net/session.configuration
-.. _`php.net/memcached.setoption`: http://php.net/memcached.setoption
+.. _`php.net/session.customhandler`: https://php.net/session.customhandler
+.. _`php.net/session.configuration`: https://php.net/session.configuration
+.. _`php.net/memcached.setoption`: https://php.net/memcached.setoption
diff --git a/components/http_kernel.rst b/components/http_kernel.rst
index e3e777fd6b2..d7f80fb05eb 100644
--- a/components/http_kernel.rst
+++ b/components/http_kernel.rst
@@ -721,10 +721,10 @@ Learn more
    /reference/events
 
 .. _Packagist: https://packagist.org/packages/symfony/http-kernel
-.. _reflection: http://php.net/manual/en/book.reflection.php
+.. _reflection: https://php.net/manual/en/book.reflection.php
 .. _FOSRestBundle: https://github.com/friendsofsymfony/FOSRestBundle
 .. _`Create your own framework... on top of the Symfony2 Components`: http://fabien.potencier.org/article/50/create-your-own-framework-on-top-of-the-symfony2-components-part-1
-.. _`PHP FPM`: http://php.net/manual/en/install.fpm.php
+.. _`PHP FPM`: https://php.net/manual/en/install.fpm.php
 .. _`SensioFrameworkExtraBundle`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/index.html
 .. _`@ParamConverter`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html
 .. _`@Template`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/view.html
diff --git a/components/intl.rst b/components/intl.rst
index f3f16a353b6..55dc9a62331 100644
--- a/components/intl.rst
+++ b/components/intl.rst
@@ -351,6 +351,6 @@ Learn more
 
 .. _Packagist: https://packagist.org/packages/symfony/intl
 .. _Icu component: https://packagist.org/packages/symfony/icu
-.. _intl extension: http://www.php.net/manual/en/book.intl.php
-.. _install the intl extension: http://www.php.net/manual/en/intl.setup.php
+.. _intl extension: https://php.net/manual/en/book.intl.php
+.. _install the intl extension: https://php.net/manual/en/intl.setup.php
 .. _ICU library: http://site.icu-project.org/
diff --git a/components/phpunit_bridge.rst b/components/phpunit_bridge.rst
index 09e37882de2..69c35a7d3a0 100644
--- a/components/phpunit_bridge.rst
+++ b/components/phpunit_bridge.rst
@@ -153,8 +153,8 @@ compatibility reasons.
 
 .. _PHPUnit: https://phpunit.de
 .. _`PHPUnit event listener`: https://phpunit.de/manual/current/en/extending-phpunit.html#extending-phpunit.PHPUnit_Framework_TestListener
-.. _`PHP error handler`: http://php.net/manual/en/book.errorfunc.php
+.. _`PHP error handler`: https://php.net/manual/en/book.errorfunc.php
 .. _`environment variable`: https://phpunit.de/manual/current/en/appendixes.configuration.html#appendixes.configuration.php-ini-constants-variables
 .. _Packagist: https://packagist.org/packages/symfony/phpunit-bridge
-.. _`@-silencing operator`: http://php.net/manual/en/language.operators.errorcontrol.php
-.. _`@-silenced`: http://php.net/manual/en/language.operators.errorcontrol.php
+.. _`@-silencing operator`: https://php.net/manual/en/language.operators.errorcontrol.php
+.. _`@-silenced`: https://php.net/manual/en/language.operators.errorcontrol.php
diff --git a/components/process.rst b/components/process.rst
index 355c853105f..daef81e637b 100644
--- a/components/process.rst
+++ b/components/process.rst
@@ -367,5 +367,5 @@ absolute path of the executable PHP binary available on your server::
 .. _`PHP Bug#39992`: https://bugs.php.net/bug.php?id=39992
 .. _`exec`: https://en.wikipedia.org/wiki/Exec_(operating_system)
 .. _`pid`: https://en.wikipedia.org/wiki/Process_identifier
-.. _`PHP Documentation`: http://php.net/manual/en/pcntl.constants.php
+.. _`PHP Documentation`: https://php.net/manual/en/pcntl.constants.php
 .. _Packagist: https://packagist.org/packages/symfony/process
diff --git a/components/psr7.rst b/components/psr7.rst
index 32b008413d9..11b14caa072 100644
--- a/components/psr7.rst
+++ b/components/psr7.rst
@@ -85,6 +85,6 @@ to a :class:`Symfony\\Component\\HttpFoundation\\Response` instance::
     $httpFoundationFactory = new HttpFoundationFactory();
     $symfonyResponse = $httpFoundationFactory->createResponse($psrResponse);
 
-.. _`PSR-7`: http://www.php-fig.org/psr/psr-7/
+.. _`PSR-7`: https://www.php-fig.org/psr/psr-7/
 .. _`Zend Diactoros`: https://github.com/zendframework/zend-diactoros
 .. _`symfony/psr-http-message-bridge on Packagist`: https://packagist.org/packages/symfony/psr-http-message-bridge
diff --git a/components/serializer.rst b/components/serializer.rst
index 98935c75aaa..8d33d830626 100644
--- a/components/serializer.rst
+++ b/components/serializer.rst
@@ -652,6 +652,6 @@ Learn more
     A popular alternative to the Symfony Serializer Component is the third-party
     library, `JMS serializer`_ (released under the Apache license, so incompatible with GPLv2 projects).
 
-.. _`PSR-1 standard`: http://www.php-fig.org/psr/psr-1/
+.. _`PSR-1 standard`: https://www.php-fig.org/psr/psr-1/
 .. _`JMS serializer`: https://github.com/schmittjoh/serializer
 .. _Packagist: https://packagist.org/packages/symfony/serializer
diff --git a/contributing/code/bc.rst b/contributing/code/bc.rst
index f1e5d334fb9..a6b09276069 100644
--- a/contributing/code/bc.rst
+++ b/contributing/code/bc.rst
@@ -291,9 +291,9 @@ Change value of a constant                          Yes [1]_ [5]_
        Changing an argument type is only possible with a parent type.
        Changing a return type is only possible with a child type.
 
-.. _Semantic Versioning: http://semver.org/
-.. _scalar type: http://php.net/manual/en/function.is-scalar.php
-.. _boolean values: http://php.net/manual/en/function.boolval.php
-.. _string values: http://www.php.net/manual/en/function.strval.php
-.. _integer values: http://www.php.net/manual/en/function.intval.php
-.. _float values: http://www.php.net/manual/en/function.floatval.php
+.. _Semantic Versioning: https://semver.org/
+.. _scalar type: https://php.net/manual/en/function.is-scalar.php
+.. _boolean values: https://php.net/manual/en/function.boolval.php
+.. _string values: https://php.net/manual/en/function.strval.php
+.. _integer values: https://php.net/manual/en/function.intval.php
+.. _float values: https://php.net/manual/en/function.floatval.php
diff --git a/contributing/code/bugs.rst b/contributing/code/bugs.rst
index 46134a01b88..cf6f710ba23 100644
--- a/contributing/code/bugs.rst
+++ b/contributing/code/bugs.rst
@@ -44,7 +44,7 @@ If your problem definitely looks like a bug, report it using the official bug
 
 * *(optional)* Attach a :doc:`patch <patches>`.
 
-.. _`Stack Overflow`: http://stackoverflow.com/questions/tagged/symfony2
+.. _`Stack Overflow`: https://stackoverflow.com/questions/tagged/symfony2
 .. _IRC channel: https://symfony.com/irc
 .. _the Symfony Slack: https://symfony.com/slack-invite
 .. _tracker: https://github.com/symfony/symfony/issues
diff --git a/contributing/code/patches.rst b/contributing/code/patches.rst
index 2f0deebb93e..e3f185038af 100644
--- a/contributing/code/patches.rst
+++ b/contributing/code/patches.rst
@@ -368,15 +368,15 @@ convert many commits to one commit. This is no longer necessary today, because
 Symfony project uses a proprietary tool which automatically squashes all commits
 before merging.
 
-.. _ProGit: http://git-scm.com/book
+.. _ProGit: https://git-scm.com/book
 .. _GitHub: https://github.com/join
 .. _`GitHub's Documentation`: https://help.github.com/articles/ignoring-files
 .. _Symfony repository: https://github.com/symfony/symfony
-.. _dev mailing-list: http://groups.google.com/group/symfony-devs
+.. _dev mailing-list: https://groups.google.com/group/symfony-devs
 .. _travis-ci.org: https://travis-ci.org/
-.. _`travis-ci.org status icon`: http://about.travis-ci.org/docs/user/status-images/
-.. _`travis-ci.org Getting Started Guide`: http://about.travis-ci.org/docs/user/getting-started/
+.. _`travis-ci.org status icon`: https://about.travis-ci.com/docs/user/status-images/
+.. _`travis-ci.org Getting Started Guide`: https://about.travis-ci.com/docs/user/getting-started/
 .. _`documentation repository`: https://github.com/symfony/symfony-docs
-.. _`fabbot`: http://fabbot.io
-.. _`PSR-1`: http://www.php-fig.org/psr/psr-1/
-.. _`PSR-2`: http://www.php-fig.org/psr/psr-2/
+.. _`fabbot`: https://fabbot.io
+.. _`PSR-1`: https://www.php-fig.org/psr/psr-1/
+.. _`PSR-2`: https://www.php-fig.org/psr/psr-2/
diff --git a/contributing/code/standards.rst b/contributing/code/standards.rst
index 36d13fc36a4..1225c4607bf 100644
--- a/contributing/code/standards.rst
+++ b/contributing/code/standards.rst
@@ -261,9 +261,9 @@ License
   present at the top of every PHP file, before the namespace.
 
 .. _`PHP CS Fixer tool`: http://cs.sensiolabs.org/
-.. _`PSR-0`: http://www.php-fig.org/psr/psr-0/
-.. _`PSR-1`: http://www.php-fig.org/psr/psr-1/
-.. _`PSR-2`: http://www.php-fig.org/psr/psr-2/
-.. _`PSR-4`: http://www.php-fig.org/psr/psr-4/
-.. _`identical comparison`: http://php.net/manual/en/language.operators.comparison.php
+.. _`PSR-0`: https://www.php-fig.org/psr/psr-0/
+.. _`PSR-1`: https://www.php-fig.org/psr/psr-1/
+.. _`PSR-2`: https://www.php-fig.org/psr/psr-2/
+.. _`PSR-4`: https://www.php-fig.org/psr/psr-4/
+.. _`identical comparison`: https://php.net/manual/en/language.operators.comparison.php
 .. _`Yoda conditions`: https://en.wikipedia.org/wiki/Yoda_conditions
diff --git a/contributing/community/releases.rst b/contributing/community/releases.rst
index bb660f1530b..a7dbd76aadc 100644
--- a/contributing/community/releases.rst
+++ b/contributing/community/releases.rst
@@ -187,7 +187,7 @@ version: a new version is published every six months, and there is a two months
 period to upgrade. Companies wanting more stability use the LTS versions: a new
 version is published every two years and there is a year to upgrade.
 
-.. _Semantic Versioning: http://semver.org/
+.. _Semantic Versioning: https://semver.org/
 .. _Git repository: https://github.com/symfony/symfony
 .. _SensioLabs:     http://sensiolabs.com/
 .. _roadmap notification: https://symfony.com/roadmap
diff --git a/controller/soap_web_service.rst b/controller/soap_web_service.rst
index a7eeb15e98d..47908796beb 100644
--- a/controller/soap_web_service.rst
+++ b/controller/soap_web_service.rst
@@ -199,7 +199,7 @@ An example WSDL is below.
         </service>
     </definitions>
 
-.. _`PHP SOAP`: http://php.net/manual/en/book.soap.php
+.. _`PHP SOAP`: https://php.net/manual/en/book.soap.php
 .. _`NuSOAP`: http://sourceforge.net/projects/nusoap
-.. _`output buffering`: http://php.net/manual/en/book.outcontrol.php
+.. _`output buffering`: https://php.net/manual/en/book.outcontrol.php
 .. _`Zend SOAP`: http://framework.zend.com/manual/current/en/modules/zend.soap.server.html
diff --git a/create_framework/http_foundation.rst b/create_framework/http_foundation.rst
index 48a827e35d4..a5778af7180 100644
--- a/create_framework/http_foundation.rst
+++ b/create_framework/http_foundation.rst
@@ -289,16 +289,16 @@ applications using it (like `Symfony`_, `Drupal 8`_, `phpBB 3`_, `ezPublish
 5`_, `Laravel`_, `Silex`_ and `more`_).
 
 .. _`Twig`: http://twig.sensiolabs.org/
-.. _`HTTP specification`: http://tools.ietf.org/wg/httpbis/
+.. _`HTTP specification`: https://tools.ietf.org/wg/httpbis/
 .. _`audited`: https://symfony.com/blog/symfony2-security-audit
 .. _`Symfony`: https://symfony.com/
 .. _`Drupal 8`: https://drupal.org/
 .. _`phpBB 3`: https://www.phpbb.com/
-.. _`ezPublish 5`: http://ez.no/
-.. _`Laravel`: http://laravel.com/
-.. _`Silex`: http://silex.sensiolabs.org/
+.. _`ezPublish 5`: https://ez.no/
+.. _`Laravel`: https://laravel.com/
+.. _`Silex`: https://silex.sensiolabs.org/
 .. _`Midgard CMS`: http://www.midgard-project.org/
-.. _`Zikula`: http://zikula.org/
-.. _`autoloaded`: http://php.net/autoload
-.. _`PSR-4`: http://www.php-fig.org/psr/psr-4/
+.. _`Zikula`: https://zikula.org/
+.. _`autoloaded`: https://php.net/autoload
+.. _`PSR-4`: https://www.php-fig.org/psr/psr-4/
 .. _`more`: https://symfony.com/components/HttpFoundation
diff --git a/create_framework/http_kernel_controller_resolver.rst b/create_framework/http_kernel_controller_resolver.rst
index 2fef293e017..8aa56e616f7 100644
--- a/create_framework/http_kernel_controller_resolver.rst
+++ b/create_framework/http_kernel_controller_resolver.rst
@@ -194,5 +194,5 @@ Let's conclude with the new version of our framework::
 Think about it once more: our framework is more robust and more flexible than
 ever and it still has less than 40 lines of code.
 
-.. _`reflection`: http://php.net/reflection
+.. _`reflection`: https://php.net/reflection
 .. _`FrameworkExtraBundle`: https://symfony.com/doc/current/bundles/SensioFrameworkExtraBundle/annotations/converters.html
diff --git a/create_framework/templating.rst b/create_framework/templating.rst
index 21dd890979e..cf1cdc011ee 100644
--- a/create_framework/templating.rst
+++ b/create_framework/templating.rst
@@ -177,5 +177,5 @@ As always, you can decide to stop here and use the framework as is; it's
 probably all you need to create simple websites like those fancy one-page
 `websites`_ and hopefully a few others.
 
-.. _`callbacks`: http://php.net/callback#language.types.callback
-.. _`websites`: http://kottke.org/08/02/single-serving-sites
+.. _`callbacks`: https://php.net/callback#language.types.callback
+.. _`websites`: https://kottke.org/08/02/single-serving-sites
diff --git a/create_framework/unit_testing.rst b/create_framework/unit_testing.rst
index f60ab3e5cea..9848cc93f65 100644
--- a/create_framework/unit_testing.rst
+++ b/create_framework/unit_testing.rst
@@ -212,4 +212,4 @@ safely think about the next batch of features we want to add to our framework.
 
 .. _`PHPUnit`: https://phpunit.de/manual/current/en/index.html
 .. _`test doubles`: https://phpunit.de/manual/current/en/test-doubles.html
-.. _`XDebug`: http://xdebug.org/
+.. _`XDebug`: https://xdebug.org/
diff --git a/deployment/azure-website.rst b/deployment/azure-website.rst
index 9988f3100ae..385ab888363 100644
--- a/deployment/azure-website.rst
+++ b/deployment/azure-website.rst
@@ -453,6 +453,6 @@ of steps needed so that deployment becomes even easier.
 
 .. _`sign up with Azure`: https://azure.microsoft.com/free/
 .. _`Azure Portal`: https://portal.azure.com
-.. _`PHP MSDN documentation`: http://blogs.msdn.com/b/silverlining/archive/2012/07/10/configuring-php-in-windows-azure-websites-with-user-ini-files.aspx
-.. _`git-scm.com`: http://git-scm.com/download
+.. _`PHP MSDN documentation`: https://blogs.msdn.com/b/silverlining/archive/2012/07/10/configuring-php-in-windows-azure-websites-with-user-ini-files.aspx
+.. _`git-scm.com`: https://git-scm.com/download
 .. _`SymfonyAzureEdition`: https://github.com/beberlei/symfony-azure-edition/
diff --git a/doctrine/dbal.rst b/doctrine/dbal.rst
index 99f06981e1f..0fe5d55ee97 100644
--- a/doctrine/dbal.rst
+++ b/doctrine/dbal.rst
@@ -195,7 +195,7 @@ mapping type:
             ),
         ));
 
-.. _`PDO`:           http://www.php.net/pdo
+.. _`PDO`:           https://php.net/pdo
 .. _`Doctrine`:      http://www.doctrine-project.org
 .. _`DBAL Documentation`: http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/index.html
 .. _`Custom Mapping Types`: http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/types.html#custom-mapping-types
diff --git a/forms.rst b/forms.rst
index d45fdadcd51..f20979236ab 100644
--- a/forms.rst
+++ b/forms.rst
@@ -739,4 +739,4 @@ Learn more
 * :doc:`/http_cache/form_csrf_caching`
 
 .. _`Symfony Form component`: https://github.com/symfony/form
-.. _`DateTime`: http://php.net/manual/en/class.datetime.php
+.. _`DateTime`: https://php.net/manual/en/class.datetime.php
diff --git a/performance.rst b/performance.rst
index 86f119a1922..b7d07896a2f 100644
--- a/performance.rst
+++ b/performance.rst
@@ -212,10 +212,10 @@ Learn more
 * :doc:`/http_cache/form_csrf_caching`
 
 .. _`byte code caches`: https://en.wikipedia.org/wiki/List_of_PHP_accelerators
-.. _`OPcache`: http://php.net/manual/en/book.opcache.php
+.. _`OPcache`: https://php.net/manual/en/book.opcache.php
 .. _`bootstrap file`: https://github.com/sensiolabs/SensioDistributionBundle/blob/master/Composer/ScriptHandler.php
 .. _`Composer's autoloader optimization`: https://getcomposer.org/doc/articles/autoloader-optimization.md
-.. _`APC`: http://php.net/manual/en/book.apc.php
+.. _`APC`: https://php.net/manual/en/book.apc.php
 .. _`APCu Polyfill component`: https://github.com/symfony/polyfill-apcu
-.. _`APCu PHP functions`: http://php.net/manual/en/ref.apcu.php
+.. _`APCu PHP functions`: https://php.net/manual/en/ref.apcu.php
 .. _`cachetool`: https://github.com/gordalina/cachetool
diff --git a/reference/constraints/GreaterThan.rst b/reference/constraints/GreaterThan.rst
index 7dab8886d50..719cfa3eb96 100644
--- a/reference/constraints/GreaterThan.rst
+++ b/reference/constraints/GreaterThan.rst
@@ -307,4 +307,4 @@ comparison value.
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _`accepted by the DateTime constructor`: http://www.php.net/manual/en/datetime.formats.php
+.. _`accepted by the DateTime constructor`: https://php.net/manual/en/datetime.formats.php
diff --git a/reference/constraints/GreaterThanOrEqual.rst b/reference/constraints/GreaterThanOrEqual.rst
index 0f67aef9cbc..313ef3431ee 100644
--- a/reference/constraints/GreaterThanOrEqual.rst
+++ b/reference/constraints/GreaterThanOrEqual.rst
@@ -305,4 +305,4 @@ to the comparison value.
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _`accepted by the DateTime constructor`: http://www.php.net/manual/en/datetime.formats.php
+.. _`accepted by the DateTime constructor`: https://php.net/manual/en/datetime.formats.php
diff --git a/reference/constraints/LessThan.rst b/reference/constraints/LessThan.rst
index e54236a5f28..4e49b5fea49 100644
--- a/reference/constraints/LessThan.rst
+++ b/reference/constraints/LessThan.rst
@@ -306,4 +306,4 @@ comparison value.
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _`accepted by the DateTime constructor`: http://www.php.net/manual/en/datetime.formats.php
+.. _`accepted by the DateTime constructor`: https://php.net/manual/en/datetime.formats.php
diff --git a/reference/constraints/LessThanOrEqual.rst b/reference/constraints/LessThanOrEqual.rst
index e9c3d60c25f..505718388a4 100644
--- a/reference/constraints/LessThanOrEqual.rst
+++ b/reference/constraints/LessThanOrEqual.rst
@@ -304,4 +304,4 @@ to the comparison value.
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _`accepted by the DateTime constructor`: http://www.php.net/manual/en/datetime.formats.php
+.. _`accepted by the DateTime constructor`: https://php.net/manual/en/datetime.formats.php
diff --git a/reference/constraints/Range.rst b/reference/constraints/Range.rst
index 6b433e6ae0c..bafc0702b3f 100644
--- a/reference/constraints/Range.rst
+++ b/reference/constraints/Range.rst
@@ -359,5 +359,5 @@ the `is_numeric`_ PHP function).
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _`is_numeric`: http://www.php.net/manual/en/function.is-numeric.php
-.. _`accepted by the DateTime constructor`: http://www.php.net/manual/en/datetime.formats.php
+.. _`is_numeric`: https://php.net/manual/en/function.is-numeric.php
+.. _`accepted by the DateTime constructor`: https://php.net/manual/en/datetime.formats.php
diff --git a/reference/constraints/Type.rst b/reference/constraints/Type.rst
index 43ffb3d59c0..5066d3a7c75 100644
--- a/reference/constraints/Type.rst
+++ b/reference/constraints/Type.rst
@@ -161,5 +161,5 @@ The message if the underlying data is not of the given type.
 
 .. include:: /reference/constraints/_payload-option.rst.inc
 
-.. _built-in PHP extension: http://php.net/book.ctype.php
-.. _a list of ctype functions: http://php.net/ref.ctype.php
+.. _built-in PHP extension: https://php.net/book.ctype.php
+.. _a list of ctype functions: https://php.net/ref.ctype.php
diff --git a/reference/forms/types/datetime.rst b/reference/forms/types/datetime.rst
index fade67e2c89..29f9ec2e6e7 100644
--- a/reference/forms/types/datetime.rst
+++ b/reference/forms/types/datetime.rst
@@ -215,4 +215,4 @@ Field Variables
 |          |            | contains the input type to use (``datetime``, ``date`` or ``time``). |
 +----------+------------+----------------------------------------------------------------------+
 
-.. _`RFC 3339`: http://tools.ietf.org/html/rfc3339
+.. _`RFC 3339`: https://tools.ietf.org/html/rfc3339
diff --git a/reference/forms/types/options/_date_limitation.rst.inc b/reference/forms/types/options/_date_limitation.rst.inc
index 4178e4dbc51..e715a5f5430 100644
--- a/reference/forms/types/options/_date_limitation.rst.inc
+++ b/reference/forms/types/options/_date_limitation.rst.inc
@@ -2,4 +2,4 @@
 
     If ``timestamp`` is used, ``DateType`` is limited to dates between
     Fri, 13 Dec 1901 20:45:54 GMT and Tue, 19 Jan 2038 03:14:07 GMT on 32bit
-    systems. This is due to a `limitation in PHP itself <http://php.net/manual/en/function.date.php#refsect1-function.date-changelog>`_.
+    systems. This is due to a `limitation in PHP itself <https://php.net/manual/en/function.date.php#refsect1-function.date-changelog>`_.
diff --git a/reference/forms/types/options/date_format.rst.inc b/reference/forms/types/options/date_format.rst.inc
index 62152ac48ac..30e168e12e0 100644
--- a/reference/forms/types/options/date_format.rst.inc
+++ b/reference/forms/types/options/date_format.rst.inc
@@ -27,5 +27,5 @@ For more information on valid formats, see `Date/Time Format Syntax`_::
     ``single_text`` widget.
 
 .. _`Date/Time Format Syntax`: http://userguide.icu-project.org/formatparse/datetime#TOC-Date-Time-Format-Syntax
-.. _`IntlDateFormatter::MEDIUM`: http://www.php.net/manual/en/class.intldateformatter.php#intl.intldateformatter-constants
-.. _`RFC 3339`: http://tools.ietf.org/html/rfc3339
+.. _`IntlDateFormatter::MEDIUM`: https://php.net/manual/en/class.intldateformatter.php#intl.intldateformatter-constants
+.. _`RFC 3339`: https://tools.ietf.org/html/rfc3339
diff --git a/reference/forms/types/options/model_timezone.rst.inc b/reference/forms/types/options/model_timezone.rst.inc
index f06489ef65f..e3cdce028e9 100644
--- a/reference/forms/types/options/model_timezone.rst.inc
+++ b/reference/forms/types/options/model_timezone.rst.inc
@@ -6,4 +6,4 @@ model_timezone
 Timezone that the input data is stored in. This must be one of the
 `PHP supported timezones`_.
 
-.. _`PHP supported timezones`: http://php.net/manual/en/timezones.php
+.. _`PHP supported timezones`: https://php.net/manual/en/timezones.php
diff --git a/reference/forms/types/options/view_timezone.rst.inc b/reference/forms/types/options/view_timezone.rst.inc
index de3f49568d2..9d94eac7277 100644
--- a/reference/forms/types/options/view_timezone.rst.inc
+++ b/reference/forms/types/options/view_timezone.rst.inc
@@ -7,4 +7,4 @@ Timezone for how the data should be shown to the user (and therefore also
 the data that the user submits). This must be one of the
 `PHP supported timezones`_.
 
-.. _`PHP supported timezones`: http://php.net/manual/en/timezones.php
+.. _`PHP supported timezones`: https://php.net/manual/en/timezones.php
diff --git a/setup.rst b/setup.rst
index 2a394506b27..d2669b28604 100644
--- a/setup.rst
+++ b/setup.rst
@@ -307,7 +307,7 @@ Go Deeper with Setup
     setup/*
 
 .. _`Composer`: https://getcomposer.org/
-.. _`Phar extension`: http://php.net/manual/en/intro.phar.php
+.. _`Phar extension`: https://php.net/manual/en/intro.phar.php
 .. _`Symfony Standard Edition`: https://github.com/symfony/symfony-standard
 .. _`The Symfony Demo application`: https://github.com/symfony/symfony-demo
 .. _`The Symfony CMF Standard Edition`: https://github.com/symfony-cmf/standard-edition
diff --git a/setup/built_in_web_server.rst b/setup/built_in_web_server.rst
index e1686bb22b8..c6622d9ef8f 100644
--- a/setup/built_in_web_server.rst
+++ b/setup/built_in_web_server.rst
@@ -115,5 +115,5 @@ when the web server listens to another IP address or to another port:
 
     $ php app/console server:stop 192.168.0.1:8080
 
-.. _`built-in web server`: http://www.php.net/manual/en/features.commandline.webserver.php
-.. _`php.net`: http://php.net/manual/en/features.commandline.webserver.php#example-411
+.. _`built-in web server`: https://php.net/manual/en/features.commandline.webserver.php
+.. _`php.net`: https://php.net/manual/en/features.commandline.webserver.php#example-411
diff --git a/setup/homestead.rst b/setup/homestead.rst
index d56ddab31ce..5c7e0fd5fe8 100644
--- a/setup/homestead.rst
+++ b/setup/homestead.rst
@@ -69,8 +69,8 @@ developing your Symfony application!
     integration, automatic creation of MySQL databases and more, read the
     `Daily Usage`_ section of the Homestead documentation.
 
-.. _Homestead: http://laravel.com/docs/homestead
+.. _Homestead: https://laravel.com/docs/homestead
 .. _Vagrant: https://www.vagrantup.com/
-.. _the Homestead documentation: http://laravel.com/docs/homestead#installation-and-setup
-.. _Daily Usage: http://laravel.com/docs/5.1/homestead#daily-usage
-.. _this blog post: http://www.whitewashing.de/2013/08/19/speedup_symfony2_on_vagrant_boxes.html
+.. _the Homestead documentation: https://laravel.com/docs/homestead#installation-and-setup
+.. _Daily Usage: https://laravel.com/docs/5.1/homestead#daily-usage
+.. _this blog post: https://www.whitewashing.de/2013/08/19/speedup_symfony2_on_vagrant_boxes.html
diff --git a/setup/new_project_git.rst b/setup/new_project_git.rst
index 599939fe0ab..6c175456c05 100644
--- a/setup/new_project_git.rst
+++ b/setup/new_project_git.rst
@@ -91,11 +91,11 @@ Alternatively, you can store your Git repository on any server by creating
 a `barebones repository`_ and then pushing to it. One library that helps
 manage this is `Gitolite`_.
 
-.. _`Git`: http://git-scm.com/
+.. _`Git`: https://git-scm.com/
 .. _`Symfony Standard Edition`: https://symfony.com/download
-.. _`git submodules`: http://git-scm.com/book/en/Git-Tools-Submodules
+.. _`git submodules`: https://git-scm.com/book/en/Git-Tools-Submodules
 .. _`GitHub`: https://github.com/
-.. _`barebones repository`: http://git-scm.com/book/en/Git-Basics-Getting-a-Git-Repository
+.. _`barebones repository`: https://git-scm.com/book/en/Git-Basics-Getting-a-Git-Repository
 .. _`Gitolite`: https://github.com/sitaramc/gitolite
 .. _`GitHub .gitignore`: https://help.github.com/articles/ignoring-files
 .. _`Bitbucket`: https://bitbucket.org/
diff --git a/setup/new_project_svn.rst b/setup/new_project_svn.rst
index dcb90d23ab5..36684137e49 100644
--- a/setup/new_project_svn.rst
+++ b/setup/new_project_svn.rst
@@ -132,12 +132,12 @@ central repository to work. You then have several solutions:
   available like `GitHub`_, `Google code`_, `SourceForge`_ or `Gna`_. Some of them offer
   Git hosting as well.
 
-.. _`Git`: http://git-scm.com/
-.. _`SVN`: http://subversion.apache.org/
-.. _`Subversion`: http://subversion.apache.org/
+.. _`Git`: https://git-scm.com/
+.. _`SVN`: https://subversion.apache.org/
+.. _`Subversion`: https://subversion.apache.org/
 .. _`Symfony Standard Edition`: https://symfony.com/download
 .. _`Version Control with Subversion`: http://svnbook.red-bean.com/
 .. _`GitHub`: https://github.com/
-.. _`Google code`: http://code.google.com/hosting/
-.. _`SourceForge`: http://sourceforge.net/
+.. _`Google code`: https://code.google.com/hosting/
+.. _`SourceForge`: https://sourceforge.net/
 .. _`Gna`: http://gna.org/
diff --git a/setup/web_server_configuration.rst b/setup/web_server_configuration.rst
index 78c8b380f1e..56759bd40af 100644
--- a/setup/web_server_configuration.rst
+++ b/setup/web_server_configuration.rst
@@ -345,6 +345,6 @@ The **minimum configuration** to get your application running under Nginx is:
 
 For advanced Nginx configuration options, read the official `Nginx documentation`_.
 
-.. _`Apache documentation`: http://httpd.apache.org/docs/
+.. _`Apache documentation`: https://httpd.apache.org/docs/
 .. _`FastCgiExternalServer`: https://docs.oracle.com/cd/B31017_01/web.1013/q20204/mod_fastcgi.html#FastCgiExternalServer
 .. _`Nginx documentation`: https://www.nginx.com/resources/wiki/start/topics/recipes/symfony/
diff --git a/testing.rst b/testing.rst
index fd3d5e16d9c..19d7332e2f8 100644
--- a/testing.rst
+++ b/testing.rst
@@ -928,4 +928,4 @@ Learn more
 .. _`PHPUnit`: https://phpunit.de/
 .. _`documentation`: https://phpunit.de/manual/current/en/
 .. _`PHPUnit Bridge component`: https://symfony.com/components/PHPUnit%20Bridge
-.. _`$_SERVER`: http://php.net/manual/en/reserved.variables.server.php
+.. _`$_SERVER`: https://php.net/manual/en/reserved.variables.server.php