Fix 301 errors

README.md

 *Libraries and applications for continuous integration.*
 
 * [CircleCI](https://circleci.com) - A continuous integration platform.
-* [GitlabCi](https://about.gitlab.com/gitlab-ci/) - Let GitLab CI test, build, deploy your code. TravisCi like.
+* [GitlabCi](https://about.gitlab.com/product/continuous-integration/) - Let GitLab CI test, build, deploy your code. TravisCi like.
 * [Jenkins](https://jenkins.io/index.html) - A continuous integration platform with [PHP support](http://jenkins-php.org/index.html).
 * [JoliCi](https://github.com/jolicode/JoliCi) - A continuous integration client written in PHP and powered by Docker.
 * [PHPCI](https://www.phptesting.org/) - An open source continuous integration platform for PHP.
 * [Exakat](https://github.com/exakat/exakat) - A static analysis engine for PHP.
 * [Mondrian](https://github.com/Trismegiste/Mondrian) - A code analysis tool using Graph Theory.
 * [phan](https://github.com/phan/phan) - A static analyzer based on PHP 7+ and the php-ast extension.
-* [PHPCompatibility](https://github.com/wimg/PHPCompatibility) - A PHP compatibility checker for PHP CodeSniffer.
+* [PHPCompatibility](https://github.com/PHPCompatibility/PHPCompatibility) - A PHP compatibility checker for PHP CodeSniffer.
 * [PhpDependencyAnalysis](https://github.com/mamuz/PhpDependencyAnalysis) - A tool to create customisable dependency graphs.
 * [PHP Metrics](https://github.com/phpmetrics/PhpMetrics) - A static metric library.
 * [PHP Migration](https://github.com/monque/PHP-Migration) - A static analyzer for PHP version migration.
 
 * [Bernard](https://github.com/bernardphp/bernard) - A multibackend abstraction library.
 * [BunnyPHP](https://github.com/jakubkulhan/bunny) - A performant pure-PHP AMQP (RabbitMQ) sync and also async (ReactPHP) library.
-* [Pheanstalk](https://github.com/pda/pheanstalk) - A Beanstalkd client library.
+* [Pheanstalk](https://github.com/pheanstalk/pheanstalk) - A Beanstalkd client library.
 * [PHP AMQP](https://github.com/php-amqplib/php-amqplib) - A pure PHP AMQP library.
 * [Tarantool Queue](https://github.com/tarantool-php/queue) - PHP bindings for Tarantool Queue.
 * [Thumper](https://github.com/php-amqplib/Thumper) - A RabbitMQ pattern library.
 ### Caching
 *Libraries for caching data.*
 
-* [Alternative PHP Cache (APC)](https://php.net/manual/en/book.apc.php) - Open opcode cache for PHP.
+* [Alternative PHP Cache (APC)](https://secure.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).
 * [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](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 The Right Way](https://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.
-* [Securing PHP](https://securingphp.com/) - A newsletter about PHP security and library recommendations.
+* [Securing PHP](https://www.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.
 
 * [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](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.
+* Collecting Garbage: [1](https://secure.php.net/manual/en/features.gc.refcounting-basics.php) [2](https://secure.php.net/manual/en/features.gc.collecting-cycles.php) [3](https://secure.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.
 
 ### PHP Magazines