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Building Your Startup: Running Multiple Domains
Mar 17, 2017 @ 10:53:11

The TutsPlus.com site has posted their latest tutorial in their "Building Your Startup" series today. In this new article they show you how to update the application to support multiple domains in one Yii2 application.

The Yii2 advanced template allows you to run a number of sites in one code tree. I used its front-end tree to build Meeting Planner and its back-end tree to build the administrative suite of tools for the service. Today, however, I'll focus on launching another domain on top of the existing front-end tree—and all the small and large complexities that go along with this.

[...] I presumed it would be fairly simple (no pun intended) to launch Simple Planner, but it ended up taking a few days of work.

He points out that the work to get the frontend of the application working with a different domain name was relatively simple. It was the update to the email handling that took the most time (the application is very email-driven). He then shows the configuration changes required to add multiple domains, how to change the homepage for each domain and update images/links/etc to match the new domain. He then moves on to configuring the services used for each domain and, finally, the pieces that need to be updated to have the emails support the multiple domains.

tagged: startup build tutorial series yii2 multiple domain

Link: https://code.tutsplus.com/tutorials/building-your-startup-running-multiple-domains--cms-27459

Sameer Borate:
Handling multiple exceptions in PHP 7.1
Feb 14, 2017 @ 09:40:16

Sameer Borate has a new post to his site today showing how you can handle multiple exceptions in PHP 7.1, the latest release in the PHP 7.x series.

Exception handling is one of the ways in which modern languages handle errors. PHP usually handles exception in a separate catch block for each different type of exception. Below is a example exception code that uses three custom exceptions ‘MyFooException’, ‘MyBarException’ and ‘MyBazException’ that is later handled in a ‘try’ block.

He includes a bit of code showing the "old way" of doing it with multiple catch statements, one for each type of exception. With PHP 7.1 however, you can collapse all of those down into a single catch statement and type hint each type you want caught (pipe delimited). This can make for much cleaner code and a lot less repetition in your error/exception handling.

tagged: multiple exception php71 try catch single tutorial

Link: http://www.codediesel.com/php/handling-multiple-exceptions-in-php-7-1/

Laravel News:
Deprecations for PHP 7.2
Jan 31, 2017 @ 11:15:06

In this new post to the Laravel News site they list out some of the deprecations coming in PHP 7.2 based on this RFC.

The PHP 7.2 RFC for deprecating some current functionality has been approved. The following items are included in this list and will begin throwing deprecated notices.

The list of features to be deprecated includes:

  • the magic __autoload function
  • the create_function function
  • the (unset) cast
  • the each function

Most of the things in the list are functionality that you just don't see much in recent PHP development. It could cause problems for older codebases but for those already on PHp 7 it shouldn't take much to make the necessary changes.

tagged: php72 deprecation notice version rfc multiple

Link: https://laravel-news.com/php-7-2-deprecations

Exakat Blog:
Prevent multiple PHP scripts at the same time
Dec 16, 2016 @ 11:09:23

The Exakat.io blog has a post with an interesting method for preventing the execution of multiple instances of a script at once - locking execution with an external indicator (like files, semaphores and streams/sockets).

Like everything, it all started from a simple problem : how to prevent multiple PHP scripts at the same time. And turned into an odyssey of learning, full of evil traps and inglorious victories. In the end, it works, that’s the most satisfying and it possibly matters to no one except me. But "the way is the goal", as said Confucius, so, I decided to share the various findings.

Exakat runs in command line, and it uses a graph database. The database is central to the processing, and it is crucial to avoid running several scripts at the same time : they will write over each other. So, the problem is simple : preventing several instances to run at the same time, on the database. In commandline, there is no web server that may serve as common place between scripts, sharing some memory and implementing a locking system. It requires to use another common ground : the system.

He shares some of the methods he tried to help prevent the simultaneous execution of the Exakat process including:

  • file locking using flock
  • creating a "lock" file
  • making it "crash proof"
  • using semaphores
  • using a socket for the lock

He describes some of the issues he found when running the tool using locking inside of a Docker container and, finally, the use of sockets and streams to place a "hold" until the script closes (also preventing issues on a crash). He ends the post talking about the "final boss" in his battle for locking support - the handing off of the socket connection to another process between parent and child. The final list in the post is a list of each method he tried, their benefits and downsides (but only in certain situations).

tagged: exakat prevention multiple scripts locking execution solutions

Link: https://www.exakat.io/prevent-multiple-php-scripts-at-the-same-time/

Colin O'Dell:
Installing PHP 7.1 December 2nd, 2016
Dec 08, 2016 @ 10:54:42

With the recent release of PHP 7.1 you might be asking how you can quickly and easily update your current installation, regardless of the platform. Thankfully Colin O'Dell is here to help with this guide to upgrading to v7.1 on multiple Linux distributions, OSX and Windows.

PHP 7.1 has been released, bringing some great new features and enhancements to the language such as nullable types, the iterable pseudo-type, catching multiple exceptions, and much more.

Here's a brief guide on how to install PHP 7.1 on several different operating systems.

He includes instructions for Ubuntu, Debian, CentOS/RHEL, Mac OS 10.6+ and Windows. Complete commands and links to the downloads are also provided. You have no excuse now not to upgrade - get downloading!

tagged: install php71 multiple platform tutorial linux osx windows

Link: https://www.colinodell.com/blog/2016-12/installing-php-7-1

Matt Stauffer:
Routing changes in Laravel 5.3
Jul 28, 2016 @ 09:36:05

In another of his series of posts about the upcoming version of the Laravel framework (v5.3) Matt Stauffer focuses in on some of the changes in routing that are coming down the line.

The last few versions of Laravel have showed the way routing works shifting around a bit. This is usually a sign that we're feeling some sort of pain—something feels off—but haven't found the perfect solution yet. In 5.3, we may have found it.

He starts by looking at some of the routing changes that happened when v5.2 was released including the change away from two groups ("web" and "api"). In v5.3 the major change is the location of the routes definitions containing all of the routes in your application. In the update, this relocation (into a directory) allows you to define multiple route configurations that can be individually changed based on features rather than one global place. He also includes an example of how you can set up your RouteServiceProvider to load in custom configurations as well.

tagged: laravel v53 routing changes directory multiple files configuration

Link: https://mattstauffer.co/blog/routing-changes-in-laravel-5-3

Security Update:
Imagemagick - Multiple Vulnerabilities
May 05, 2016 @ 11:07:35

Imagemagick, a well-used alternative by PHP developers for graphics manipulation (an alternative to GD) has had several new vulnerabilities announced. These vulnerabilities allow for everything from remote code execution to initiating network requests. The Imagetragick site has more information:

There are multiple vulnerabilities in ImageMagick, a package commonly used by web services to process images. One of the vulnerabilities can lead to remote code execution (RCE) if you process user submitted images. The exploit for this vulnerability is being used in the wild.

A number of image processing plugins depend on the ImageMagick library, including, but not limited to, PHP’s imagick, Ruby’s rmagick and paperclip, and nodejs’s imagemagick. If you use ImageMagick or an affected library, we recommend you mitigate the known vulnerabilities.

There's two mitigations listed to help with a more immediate fix: using a policy.xml file and verifying that image data starts with the right "magic bytes". The site also shares more information about the different vulnerabilities and what kind of attacks they could allow. It is highly recommended that you add the mitigations they show and update your installation to use the latest release (7.0.1-1) with fixes for these issues.

tagged: imagemagick vulnerabilities multiple upgrade mitigation

Link: https://imagetragick.com

Matthew Weier O'Phinney:
Benefits of multiple repositories (Zend Framework)
Apr 26, 2016 @ 12:09:34

Matthew Weier O'Phinney, of Zend and the Zend Framework project, has put together a Storify stream of tweets he posted about some of the benefits of having multiple repositories in a project.

I've seen a number of critiques and write-ups recently about how monolithic repositories are intrinsically better for developing large projects than using a multi-repository approach. In the past year, we went the other direction, splitting our monolithic repository into individual component repositories, each with their own history, tests, and documentation. This is a summary of our experience.

He goes through a list of six different things they learned as a part of splitting up the (Zend) framework into multiple repositories instead of one monolithic one. He includes the contents of each Tweet and a paragraph or two giving it a bit more context and some examples of the changes that were involved. There's also a bit in there about changes they made to the documentation for the project as a result of these repository splits.

I'm quite happy with the switch from a monolithic repository to individual component repositories. I think our code quality is improving dramatically as a result, and I'm excited about the future of these various code bases.
tagged: multiple repository storify twitter zendframework learn process

Link: https://storify.com/mwop/zf-components

Matt Stauffer:
Multiple authentication guard drivers (including API) in Laravel 5.2
Jan 25, 2016 @ 09:24:31

Matt Stauffer has a new post in his series looking at the features in the latest version of the Laravel framework (v5.2) with this look at guard drivers and how 5.2 allows you to use more than one at once.

Let's get back to Laravel 5.2 features, shall we? 5.2 introduced a significant boost to the power of the entire authentication system, including making it much simpler to have multiple "guards" running at once. The default authentication guard in Laravel prior to 5.2 (now named the web guard) is your traditional web-based application authentication layer: username and password post to a controller. [...] But what if you want to have an API running in the same app, and it uses JSON web tokens (or some other stateless, non-session authentication mechanism)? In the past you'd have to jump through a lot of hoops to have multiple authentication drivers running at the same time.

He shows how to edit the auth.php configuration file to add in more "guard" instances to the default request handling. He also talks about the new driver that backends the "api" guard: the token driver. He briefly introduces the driver and talks about how it works with the current authentication setup. He also looks at changes you can make to use non-default drivers in your auth requests and how to set up your own custom drivers.

tagged: multiple authentication api token guard driver tutorial laravel

Link: https://mattstauffer.co/blog/multiple-authentication-guard-drivers-including-api-in-laravel-5-2

Michelangelo van Dam:
PHP arrays - simple operations
Jan 06, 2016 @ 09:13:29

Michelangelo van Dam continues his series on some of the basics of PHP with another look at arrays (started in this article).

Like all things in life, we need to start with simple things. So, in order to understand what arrays are in PHP, we need to take a look at the PHP manual to read what it is all about. [...] The thing with PHP is that an array is probably one of the most used data structures in web applications build with PHP and used for a wide variety of purposes.

He covers the basics of:

  • storing multiple values in an array and pushing additional values onto the end
  • removing the last item added to the array
  • pulling the first element off of the array

In his next article, he plans on expanding this introduction to arrays by looking at associative arrays.

tagged: array introduction simple tutorial multiple shift pop

Link: http://www.dragonbe.com/2016/01/php-arrays-simple-operations.html