Prefer https to http

As browsers continue to push https-first, more sites are redirecting
http visits to https. In some cases, they return an HTTP 301 response
which the test suite registers as a broken link.

README.md

@@ -87,7 +87,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 ### Composer Repositories
 *Composer Repositories.*
 
-* [Firegento](http://packages.firegento.com/) - Magento Module Composer Repository.
+* [Firegento](https://packages.firegento.com/) - Magento Module Composer Repository.
 * [Packagist](https://packagist.org/) - The PHP Package Repository.
 * [Private Packagist](https://packagist.com/) - Composer package archive as a service for PHP.
 * [WordPress Packagist](https://wpackagist.org/) - Manage your plugins with Composer.
@@ -98,7 +98,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 
 * [Composer Installers](https://github.com/composer/installers) - A  multi framework Composer library installer.
 * [Composer](https://getcomposer.org/) - A package and dependency manager.
-* [Melody](http://melody.sensiolabs.org/) - A tool to build one file Composer scripts.
+* [Melody](https://melody.sensiolabs.org/) - A tool to build one file Composer scripts.
 * [Pickle](https://github.com/FriendsOfPHP/pickle) - A PHP extension installer.
 
 ### Dependency Management Extras
@@ -129,7 +129,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 *Extras related to web development frameworks.*
 
 * [CakePHP CRUD](https://github.com/friendsofcake/crud) - A Rapid Application Development (RAD) plugin for CakePHP.
-* [Knp RAD Components](http://rad.knplabs.com/) - A set of Rapid Application Development (RAD) components for Symfony.
+* [Knp RAD Components](https://rad.knplabs.com/) - A set of Rapid Application Development (RAD) components for Symfony.
 * [Symfony CMF](https://github.com/symfony-cmf/symfony-cmf) - A Content Management Framework to create custom CMS.
 
 ### Components
@@ -139,7 +139,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [CakePHP Plugins](https://plugins.cakephp.org/) - A directory of CakePHP plugins.
 * [Hoa Project](https://hoa-project.net/En/) - Another package of PHP components.
 * [League of Extraordinary Packages](https://thephpleague.com/) - A PHP package development group.
-* [Symfony Components](http://symfony.com/doc/master/components/index.html) - The components that make Symfony.
+* [Symfony Components](https://symfony.com/doc/master/components/index.html) - The components that make Symfony.
 * [Zend Framework 2 Components](https://docs.zendframework.com/) - The components that make Zend Framework.
 
 ### Micro Frameworks
@@ -175,7 +175,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Foil](https://github.com/FoilPHP/Foil) - Another native PHP templating library.
 * [MtHaml](https://github.com/arnaud-lb/MtHaml) - A PHP implementation of the HAML template language.
 * [Mustache](https://github.com/bobthecow/mustache.php) - A PHP implementation of the Mustache template language.
-* [PHPTAL](http://phptal.org/) - A PHP implementation of the [TAL](https://en.wikipedia.org/wiki/Template_Attribute_Language) templating language.
+* [PHPTAL](https://phptal.org/) - A PHP implementation of the [TAL](https://en.wikipedia.org/wiki/Template_Attribute_Language) templating language.
 * [Plates](http://platesphp.com/) - A native PHP templating library.
 * [Smarty](https://www.smarty.net/) - A template engine to complement PHP.
 * [Twig](https://twig.symfony.com/) - A comprehensive templating language.
@@ -195,7 +195,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Guzzle]( https://github.com/guzzle/guzzle) - A comprehensive HTTP client.
 * [HTTPFul](https://github.com/nategood/httpful) - A chainable HTTP client.
 * [HTTPlug](http://httplug.io) - An HTTP client abstraction without binding to a specific implementation.
-* [PHP VCR](http://php-vcr.github.io/) - A library for recording and replaying HTTP requests.
+* [PHP VCR](https://php-vcr.github.io/) - A library for recording and replaying HTTP requests.
 * [Requests](https://github.com/rmccue/Requests) - A simple HTTP library.
 * [Retrofit](https://github.com/tebru/retrofit-php) - A library to ease creation of REST API clients.
 * [zend-diactoros](https://github.com/zendframework/zend-diactoros) - PSR-7 HTTP Message implementation.
@@ -233,7 +233,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Fetch](https://github.com/tedious/Fetch) - An IMAP library.
 * [Mautic](https://github.com/mautic/mautic) - Email marketing automation
 * [PHPMailer](https://github.com/PHPMailer/PHPMailer) - Another mailer solution.
-* [Stampie](https://github.com/Stampie/Stampie) - A library for email services such as [SendGrid](https://sendgrid.com/), [PostMark](https://postmarkapp.com), [MailGun](https://www.mailgun.com/) and [Mandrill](http://www.mandrill.com).
+* [Stampie](https://github.com/Stampie/Stampie) - A library for email services such as [SendGrid](https://sendgrid.com/), [PostMark](https://postmarkapp.com), [MailGun](https://www.mailgun.com/) and [Mandrill](https://www.mandrill.com).
 * [SwiftMailer](https://swiftmailer.symfony.com) - A mailer solution.
 
 ### Files
@@ -243,7 +243,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Flysystem](https://github.com/thephpleague/Flysystem) - Another filesystem abstraction layer.
 * [Gaufrette](https://github.com/KnpLabs/Gaufrette) - A filesystem abstraction layer.
 * [Hoa Mime](https://github.com/hoaproject/Mime) - Another MIME detection library.
-* [PHP FFmpeg](https://github.com/PHP-FFmpeg/PHP-FFmpeg/) - A wrapper for the [FFmpeg](http://www.ffmpeg.org/) video library.
+* [PHP FFmpeg](https://github.com/PHP-FFmpeg/PHP-FFmpeg/) - A wrapper for the [FFmpeg](https://www.ffmpeg.org/) video library.
 * [UnifiedArchive](https://github.com/wapmorgan/UnifiedArchive) - A unified reader and writer of compressed archives.
 
 ### Streams
@@ -270,7 +270,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Glide](https://github.com/thephpleague/glide) - An on-demand image manipulation library.
 * [Image Hash](https://github.com/jenssegers/imagehash) - A library for generating perceptual image hashes.
 * [Image Optimizer](https://github.com/psliwa/image-optimizer) - A library for optimizing images.
-* [Imagine](http://imagine.readthedocs.io/en/latest/index.html) - An image manipulation library.
+* [Imagine](https://imagine.readthedocs.io/en/latest/index.html) - An image manipulation library.
 * [Intervention Image](https://github.com/Intervention/image) - Another image manipulation library.
 * [PHP Image Workshop](https://github.com/Sybio/ImageWorkshop) - Another image manipulation library.
 
@@ -347,7 +347,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Password Validator](https://github.com/jeremykendall/password-validator) - A library for validating and upgrading password hashes.
 * [Password-Generator](https://github.com/hackzilla/password-generator) - PHP library to generate random passwords.
 * [PHP Password Lib](https://github.com/ircmaxell/PHP-PasswordLib) - A library for generating and validating passwords.
-* [phpass](http://www.openwall.com/phpass/) - A portable password hashing framework.
+* [phpass](https://www.openwall.com/phpass/) - A portable password hashing framework.
 * [Zxcvbn PHP](https://github.com/bjeavons/zxcvbn-php) - A realistic PHP password strength estimate library based on Zxcvbn JS.
 
 ### Code Analysis
@@ -389,7 +389,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 *Libraries related to design patterns, programming approaches and ways to organize code.*
 
 * [Design Patterns PHP](https://github.com/domnikl/DesignPatternsPHP) - A repository of software patterns implemented in PHP.
-* [Finite](http://yohan.giarel.li/Finite/) - A simple PHP finite state machine.
+* [Finite](https://yohan.giarel.li/Finite/) - A simple PHP finite state machine.
 * [Functional PHP](https://github.com/lstrojny/functional-php) - A functional programming library.
 * [Iter](https://github.com/nikic/iter) - A library that provides iteration primitives using generators.
 * [Patchwork](http://patchwork2.org/) - A library for redefining userland functions.
@@ -399,7 +399,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 ### Debugging and Profiling
 *Libraries and tools for debugging and profiling code.*
 
-* [APM](http://pecl.php.net/package/APM) - Monitoring extension collecting errors and statistics into SQLite/MySQL/StatsD.
+* [APM](https://pecl.php.net/package/APM) - Monitoring extension collecting errors and statistics into SQLite/MySQL/StatsD.
 * [Barbushin PHP Console](https://github.com/barbushin/php-console) - Another web debugging console using Google Chrome.
 * [Blackfire.io](https://blackfire.io) - A low-overhead code profiler.
 * [Kint](https://github.com/kint-php/kint) - A debugging and profiling tool.
@@ -410,7 +410,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [Tracy](https://github.com/nette/tracy) - A simple error detection, logging and time measuring library.
 * [xDebug](https://github.com/xdebug/xdebug) - A debug and profile tool for PHP.
 * [XHProf](https://github.com/phacility/xhprof) - A profiling tool originally developed by Facebook.
-* [Z-Ray](http://www.zend.com/en/products/server/z-ray) - A debug and profile tool for Zend Server.
+* [Z-Ray](https://www.zend.com/en/products/server/z-ray) - A debug and profile tool for Zend Server.
 
 ### Build Tools
 *Project build and automation tools.*
@@ -422,10 +422,10 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 ### Task Runners
 *Libraries for automating and running tasks.*
 
-* [Bldr](http://bldr.io/) - A PHP Task runner built on Symfony components.
+* [Bldr](https://bldr.io/) - A PHP Task runner built on Symfony components.
 * [Jobby](https://github.com/jobbyphp/jobby) - A PHP cron job manager without modifying crontab.
 * [Robo](https://github.com/consolidation/Robo) - A PHP Task runner with object-orientated configurations.
-* [Task](http://taskphp.github.io/) - A pure PHP task runner inspired by Grunt and Gulp.
+* [Task](https://taskphp.github.io/) - A pure PHP task runner inspired by Grunt and Gulp.
 
 ### Navigation
 *Tools for building navigation structures.*
@@ -443,7 +443,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 ### Geolocation
 *Libraries for geocoding addresses and working with latitudes and longitudes.*
 
-* [GeoCoder](http://geocoder-php.org/) - A geocoding library.
+* [GeoCoder](https://geocoder-php.org/) - A geocoding library.
 * [GeoJSON](https://github.com/jmikola/geojson) - A GeoJSON implementation.
 * [GeoTools](https://github.com/thephpleague/geotools) - A library of geo-related tools.
 * [PHPGeo](https://github.com/mjaschen/phpgeo) - A simple geo library.
@@ -451,7 +451,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 ### Date and Time
 *Libraries for working with dates and times.*
 
-* [CalendR](http://yohan.giarel.li/CalendR/) - A calendar management library.
+* [CalendR](https://yohan.giarel.li/CalendR/) - A calendar management library.
 * [Carbon](https://github.com/briannesbitt/Carbon) - A simple DateTime API extension.
 * [Chronos](https://github.com/cakephp/chronos) - A DateTime API extension supporting both mutable and immutable date/time.
 * [Moment.php](https://github.com/fightbulc/moment.php) - Moment.js inspired PHP DateTime handler with i18n support.
@@ -552,9 +552,9 @@ Libraries to help manage database schemas and migrations.
 
 * [Elastica](https://github.com/ruflin/Elastica) - A client library for ElasticSearch.
 * [ElasticSearch PHP](https://github.com/elastic/elasticsearch-php) - The official client library for [ElasticSearch](https://www.elastic.co/).
-* [Solarium](http://www.solarium-project.org/) - A client library for [Solr](http://lucene.apache.org/solr/).
+* [Solarium](https://www.solarium-project.org/) - A client library for [Solr](https://lucene.apache.org/solr/).
 * [Sphinx Search](https://github.com/ripaclub/sphinxsearch) - Sphinx Search library provides SphinxQL indexing and searching features
-* [SphinxQL query builder](http://foolcode.github.io/SphinxQL-Query-Builder/) - A query library for the [Sphinx](http://sphinxsearch.com/) search engine.
+* [SphinxQL query builder](https://foolcode.github.io/SphinxQL-Query-Builder/) - A query library for the [Sphinx](https://sphinxsearch.com/) search engine.
 
 ### Command Line
 *Libraries related to the command line.*
@@ -581,8 +581,8 @@ Libraries to help manage database schemas and migrations.
 * [Json Web Token](https://github.com/lcobucci/jwt) - Json Tokens to authenticate and transmit information.
 * [OAuth 1.0 Client](https://github.com/thephpleague/oauth1-client) - An OAuth 1.0 client library.
 * [OAuth 2.0 Client](https://github.com/thephpleague/oauth2-client) - An OAuth 2.0 client library.
-* [OAuth2 Server](http://bshaffer.github.io/oauth2-server-php-docs/) - Another OAuth2 server implementation.
-* [OAuth2 Server](http://oauth2.thephpleague.com/) - An OAuth2 authentication server, resource server and client library.
+* [OAuth2 Server](https://bshaffer.github.io/oauth2-server-php-docs/) - Another OAuth2 server implementation.
+* [OAuth2 Server](https://oauth2.thephpleague.com/) - An OAuth2 authentication server, resource server and client library.
 * [Opauth](https://github.com/opauth/opauth) - A multi-provider authentication framework.
 * [PHP oAuthLib](https://github.com/Lusitanian/PHPoAuthLib) - Another OAuth library.
 * [Sentinel Social](https://cartalyst.com/manual/sentinel-social/2.0) - A library for social network authentication.
@@ -655,7 +655,7 @@ Libraries to help manage database schemas and migrations.
 ### Caching
 *Libraries for caching data.*
 
-* [Alternative PHP Cache (APC)](http://php.net/manual/en/book.apc.php) - Open opcode cache for PHP.
+* [Alternative PHP Cache (APC)](https://php.net/manual/en/book.apc.php) - Open opcode cache for PHP.
 * [APIx Cache](https://github.com/apix/cache) - A thin PSR-6 cache wrapper to various caching backends emphasising cache tagging and indexing.
 * [CacheTool](https://github.com/gordalina/cachetool) - A tool to clear APC/opcode caches from the command line.
 * [Cake Cache](https://github.com/cakephp/cache) - A caching library (CP).
@@ -705,7 +705,7 @@ Libraries to help manage database schemas and migrations.
 *Libraries for accessing third party APIs.*
 
 * [Amazon Web Service SDK](https://github.com/aws/aws-sdk-php) - The official PHP AWS SDK library.
-* [Campaign Monitor](http://campaignmonitor.github.io/createsend-php/) - The official Campaign Monitor PHP library.
+* [Campaign Monitor](https://campaignmonitor.github.io/createsend-php/) - The official Campaign Monitor PHP library.
 * [Dropbox SDK](https://github.com/dropbox/dropbox-sdk-php) - The official PHP Dropbox SDK library.
 * [Github](https://github.com/KnpLabs/php-github-api) - A library to interface with the Github API.
 * [Mailgun](https://github.com/mailgun/mailgun-php) The official Mailgun PHP API.
@@ -715,7 +715,7 @@ Libraries to help manage database schemas and migrations.
 ### Extensions
 *Libraries to help build PHP extensions.*
 
-* [PHP CPP](http://www.php-cpp.com/) - A C++ library for developing PHP extensions.
+* [PHP CPP](https://www.php-cpp.com/) - A C++ library for developing PHP extensions.
 * [Zephir](https://github.com/phalcon/zephir) - A compiled language between PHP and C++ for developing PHP extensions.
 
 ### Miscellaneous
@@ -749,8 +749,8 @@ Libraries to help manage database schemas and migrations.
 * [Slimdump](https://github.com/webfactory/slimdump) - An easy dumper tool for MySQL.
 * [Spork](https://github.com/kriswallsmith/spork) - A process forking library.
 * [SuperClosure](https://github.com/jeremeamia/super_closure) - A library that allows Closures to be serialized.
-* [Symfony VarDumper](http://symfony.com/doc/current/components/var_dumper.html) - A variable dumper component (SF).
-* [Underscore](http://anahkiasen.github.io/underscore-php/) - A PHP port of the Underscore JS library.
+* [Symfony VarDumper](https://symfony.com/doc/current/components/var_dumper.html) - A variable dumper component (SF).
+* [Underscore](https://anahkiasen.github.io/underscore-php/) - A PHP port of the Underscore JS library.
 * [Whoops](https://github.com/filp/whoops) - A pretty error handling library.
 
 # Software
@@ -790,7 +790,7 @@ Libraries to help manage database schemas and migrations.
 * [Atom IDE](https://ide.atom.io/) - An IDE extension for Atom.
 * [Eclipse for PHP Developers](https://www.eclipse.org/downloads/) - A PHP IDE based on the Eclipse platform.
 * [Netbeans](https://netbeans.org) - An IDE with support for PHP and HTML5.
-* [PhpStorm](http://www.jetbrains.com/phpstorm/) - A commercial PHP IDE.
+* [PhpStorm](https://www.jetbrains.com/phpstorm/) - A commercial PHP IDE.
 * [VS Code](https://code.visualstudio.com/) - An open source code editor.
 
 ### Web Applications
@@ -825,13 +825,13 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [PHP Mentoring](https://php-mentoring.org/) - Peer to peer PHP mentorship organization.
 * [PHP Package Development Standards](http://php-pds.com) - Package development standards for PHP.
 * [PHP School](https://www.phpschool.io/) - Open Source Learning for PHP.
-* [PHP Security](http://phpsecurity.readthedocs.io/en/latest/index.html) - A guide to PHP security.
-* [PHP The Right Way](http://www.phptherightway.com/) - A PHP best practice quick reference guide.
-* [PHP UG](http://php.ug) - A website to help people locate their nearest PHP user group (UG).
+* [PHP Security](https://phpsecurity.readthedocs.io/en/latest/index.html) - A guide to PHP security.
+* [PHP The Right Way](https://www.phptherightway.com/) - A PHP best practice quick reference guide.
+* [PHP UG](https://php.ug) - A website to help people locate their nearest PHP user group (UG).
 * [PHP Versions](http://phpversions.info/) - Lists which versions of PHP are available on several popular web hosts.
 * [PHP Weekly](http://www.phpweekly.com/archive.html) - A weekly PHP newsletter.
 * [PHPTrends](https://phptrends.com/) - An overview of fastest growing PHP libraries.
-* [Securing PHP](http://securingphp.com/) - A newsletter about PHP security and library recommendations.
+* [Securing PHP](https://securingphp.com/) - A newsletter about PHP security and library recommendations.
 * [Seven PHP](https://7php.com/) - A website that interviews members of the PHP community.
 * [PHP Annotated Monthly](https://blog.jetbrains.com/phpstorm/category/php-annotated-monthly/) - A monthly digest of PHP news.
 
@@ -855,7 +855,7 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [Modernizing Legacy Applications in PHP](https://leanpub.com/mlaphp) - A book about modernizing legacy PHP applications by Paul M. Jones.
 * [PHP 7 Upgrade Guide](https://leanpub.com/php7) - An ebook covering all of the features and changes in PHP 7 by Colin O'Dell.
 * [PHP Pandas](https://daylerees.com/php-pandas/) - A book about learning to write PHP by Dayle Rees.
-* [Scaling PHP Applications](http://www.scalingphpbook.com) - An ebook about scaling PHP applications by Steve Corona.
+* [Scaling PHP Applications](https://www.scalingphpbook.com) - An ebook about scaling PHP applications by Steve Corona.
 * [Securing PHP: Core Concepts](https://leanpub.com/securingphp-coreconcepts) - A book about common security terms and practices for PHP by Chris Cornutt.
 * [Signaling PHP](https://leanpub.com/signalingphp) - A book about catching PCNTL signals in CLI scripts by Cal Evans.
 * [The Grumpy Programmer's Guide to Building Testable PHP Applications](https://leanpub.com/grumpy-testing) - A book about building testing PHP applications by Chris Hartjes.
@@ -866,12 +866,12 @@ Various resources, such as books, websites and articles, for improving your PHP
 *Books related to general computing and web development.*
 
 * [Elasticsearch: The Definitive Guide](https://www.elastic.co/guide/index.html) - A guide to working with Elasticsearch by Clinton Gormley and Zachary Tong.
-* [Eloquent JavaScript](http://eloquentjavascript.net/) - A book about JavaScript programming by Marijn Haverbeke.
+* [Eloquent JavaScript](https://eloquentjavascript.net/) - A book about JavaScript programming by Marijn Haverbeke.
 * [Head First Design Patterns](https://www.safaribooksonline.com/library/view/head-first-design/0596007124/) - A book that expains software design patterns.
 * [Pro Git](https://git-scm.com/book/en/v2) - A book about Git by Scott Chacon and Ben Straub.
 * [The Linux Command Line](http://linuxcommand.org/tlcl.php) - A book about the Linux command line by William Shotts.
 * [The Tangled Web — Securing Web Applications](https://www.amazon.com/Tangled-Web-Securing-Modern-Applications/dp/1593273886) - A book about securing web applications by Michal Zalewski.
-* [Understanding Computation](http://computationbook.com) - A book about computation theory by Tom Stuart.
+* [Understanding Computation](https://computationbook.com) - A book about computation theory by Tom Stuart.
 * [Vagrant Cookbook](https://leanpub.com/vagrantcookbook) - A book about creating Vagrant environments by Erika Heidi.
 
 ### PHP Videos
@@ -899,7 +899,7 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [Don't Worry About BREACH](https://blog.ircmaxell.com/2013/08/dont-worry-about-breach.html) - An article about the BREACH hack and CSRF tokens.
 * [On PHP 5.3, Lambda Functions and Closures](http://fabien.potencier.org/on-php-5-3-lambda-functions-and-closures.html) - An article about lambda functions and closures.
 * [PHP Is Much Better Than You Think](http://fabien.potencier.org/php-is-much-better-than-you-think.html) - An article about the PHP language and ecosystem.
-* [PHP Package Checklist](http://phppackagechecklist.com/) - A checklist for successful PHP package development.
+* [PHP Package Checklist](https://phppackagechecklist.com/) - A checklist for successful PHP package development.
 * [PHP Sucks! But I Like It!](https://blog.ircmaxell.com/2012/04/php-sucks-but-i-like-it.html) - An article about the pros and cons of PHP.
 * [Preventing CSRF Attacks](https://blog.ircmaxell.com/2013/02/preventing-csrf-attacks.html) - An article on preventing CSRF attacks.
 * [Seven Ways to Screw Up BCrypt](https://blog.ircmaxell.com/2012/12/seven-ways-to-screw-up-bcrypt.html) - An article about correct BCrypt implementation.
@@ -909,8 +909,8 @@ Various resources, such as books, websites and articles, for improving your PHP
 ### PHP Internals Reading
 *Reading materials related to the PHP internals or performance.*
 
-* [Disproving the Single Quotes Myth](http://nikic.github.io/2012/01/09/Disproving-the-Single-Quotes-Performance-Myth.html) - An article about performance of single and double quoted strings.
-* [How Big Are PHP Arrays (And Values) Really?](http://nikic.github.io/2011/12/12/How-big-are-PHP-arrays-really-Hint-BIG.html) - An article about array internals.
+* [Disproving the Single Quotes Myth](https://nikic.github.io/2012/01/09/Disproving-the-Single-Quotes-Performance-Myth.html) - An article about performance of single and double quoted strings.
+* [How Big Are PHP Arrays (And Values) Really?](https://nikic.github.io/2011/12/12/How-big-are-PHP-arrays-really-Hint-BIG.html) - An article about array internals.
 * [How Foreach Works](https://stackoverflow.com/questions/10057671/how-does-php-foreach-actually-work/14854568#14854568) - A detailed StackOverflow answer about foreach.
 * [How Long is a Piece of String](http://blog.golemon.com/2006/06/how-long-is-piece-of-string.html) - An article about string internals.
 * [PHP Evaluation Order](https://gist.github.com/nikic/6699370) - An article about evaluation order in PHP.
@@ -919,11 +919,11 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [Print vs Echo, Which One is Faster?](http://fabien.potencier.org/print-vs-echo-which-one-is-faster.html) - An article about print and echo performance.
 * [The PHP Ternary Operator. Fast or Not?](http://fabien.potencier.org/the-php-ternary-operator-fast-or-not.html) - An article ternary performance.
 * [Understanding OpCodes](http://blog.golemon.com/2008/01/understanding-opcodes.html) - An article about opcodes.
-* [When Does Foreach Copy?](http://nikic.github.io/2011/11/11/PHP-Internals-When-does-foreach-copy.html) - An article about the internals of foreach.
+* [When Does Foreach Copy?](https://nikic.github.io/2011/11/11/PHP-Internals-When-does-foreach-copy.html) - An article about the internals of foreach.
 * [Why Objects (Usually) Use Less Memory Than Arrays](https://gist.github.com/nikic/5015323) - An article about object and array internals.
 * [You're Being Lied To](http://blog.golemon.com/2007/01/youre-being-lied-to.html) - An article about internal ZVALs.
-* Collecting Garbage: [1](http://php.net/manual/en/features.gc.refcounting-basics.php) [2](http://php.net/manual/en/features.gc.collecting-cycles.php) [3](http://php.net/manual/en/features.gc.performance-considerations.php) - A series about the PHP garbage collection internals.
-* PHP Source Code for Developers: [1](https://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers.html) [2](http://nikic.github.io/2012/03/16/Understanding-PHPs-internal-function-definitions.html) [3](https://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers_21.html) [4](http://nikic.github.io/2012/03/28/Understanding-PHPs-internal-array-implementation.html) - A series about the PHP source code.
+* Collecting Garbage: [1](https://php.net/manual/en/features.gc.refcounting-basics.php) [2](https://php.net/manual/en/features.gc.collecting-cycles.php) [3](https://php.net/manual/en/features.gc.performance-considerations.php) - A series about the PHP garbage collection internals.
+* PHP Source Code for Developers: [1](https://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers.html) [2](https://nikic.github.io/2012/03/16/Understanding-PHPs-internal-function-definitions.html) [3](https://blog.ircmaxell.com/2012/03/phps-source-code-for-php-developers_21.html) [4](https://nikic.github.io/2012/03/28/Understanding-PHPs-internal-array-implementation.html) - A series about the PHP source code.
 
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