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Three Devs & A Maybe Podcast:
Functional Programming with Simon Holywell
July 23, 2014 @ 11:03:45

Three Devs & A Maybe podcast has released their latest episode today: Episode #35 - an interview with Simon Holywell. Simon is the author of an upcoming book about functional programming in PHP.

This week we are lucky to have Simon Holywell on the show to talk all things Functional Programming. Initially starting off with a concrete definition of Functional Programming, we move on to a brief history of the paradigm and immutability. Following this we explain recursion (and tail-recursion), along with closures and higher-order functions. From this base we are able to then talk about the different languages available to you which cater towards the functional mindset (i.e. Haskell). We then set our sights on the PHP language and what/wish it had to offer when exploring the functional paradigm. Finally, we mention his upcoming book, along with experiences presenting at user-group meet-ups.

Topics mentioned in this episode include:

You can listen to this latest episode either through the in-page player or by downloading the mp3 directly.

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Link: http://threedevsandamaybe.com/posts/functional-programming-with-simon-holywell/

Community News:
"PHP Beyond the web" (ebook)
December 04, 2013 @ 12:22:46

Rob Aley pointed me towards a new ebook he's created that wants to help you understand what kinds of things PHP can do "beyond the web" and the usual web-based applications - PHP Beyond the Web.

Leverage your existing web based PHP skills to write all types of software. CLI scripts, desktop software, network servers and more - this book will give you the tools, techniques and background necessary to write just about any type of software you can think of, using the PHP you know.

The book covers topics like interactive shell scripts, system daemons and desktop software. It also looks at some more general development topics like licensing, deployment and system interactions. If this sounds interesting and you want a sample of the content, check out the table of contents or the sample chapter.

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Link: http://phpbeyondtheweb.com

Michael Maclean:
Why one-line installers are a bad idea
September 21, 2012 @ 11:35:29

There's a feature that's usage has been showing up more and more in software projects (both open source and not) that allows you to install their system with a single line command, usually involving curl and maybe piping it to a shell. In this recent post Michael Maclean takes a look at this trend and some of the possible pitfalls of the approach.

There has been a trend in the last while for various bits of useful software to have a one-line shell command recommended as the installation method. The usual form of this is to pipe something like curl or wget to some interpreter, be it bash, php, ruby, or some such. [...] This [type of] command takes the output of curl and pipes it straight to bash. I have several issues with this.

His three main points center around the fact that you cannot inspect the code before executing it with this method, that you can't verify the source of the code and that it teaches users bad habits of trusting in "magic commands" like these.

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Chris Jones:
Using the PHP CLI Webserver to Identify and Test Memory Issues in PHP
August 15, 2012 @ 08:35:07

Chris Jones has a new post today showing how you can use PHP 5.4's built-in web server to help test for memory issues in your application (and the language).

Rasmus mentioned on IRC how he ran the [command line] tests: simply renaming the ".phpt" test files as ".php", and invoking them through the CLI webserver. The SKIPIF sections get executed, but that doesn't affect the desired outcome of testing multiple HTTP requests with different input scripts. [Here] are some quick shell scripts I put together to automate testing the OCI8 extension with valgrind.

He uses the OCI8 extension as an example, showing how to set up these scripts to enable the execution of the tests, fire up the web server and execute Valgrind to help monitor the memory of the execution.

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NetTuts.com:
So You Want to Accept Credit Cards Online?
June 14, 2012 @ 09:30:25

On NetTuts.com they're posted a new tutorial about using the Stripe service to accept credit cards on your site. Thanks to some handy libraries they provide, integration is a relatively simple process.

Until recently, accepting credit cards on a website was expensive and complicated. But that was before Stripe: a radically different and insanely awesome credit card processing company. Today, I'll show you how to start accepting cards in 30 minutes or less - without spending a dime.

They step you through the whole process you'll need to get the full flow set up:

  • Install an SSL Certificate (on your server)
  • Create an Account
  • Create Your Payment Form
  • Collect The Form Values
  • Request a Token
  • Create a Server-Side Script

Screenshots of the Stripe interface, HTML, Javascript and PHP code are all included - everything you need to make the simple card handling work. One of the keys to how Stripe deals with credit cards is that you provide it the card info, it gives you a token. Your app uses this to work with the card instead of storing the card information in your database (also making it more secure).

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DevShed:
Sanitizing Input with PHP
December 13, 2011 @ 11:49:31

DevShed.com has a new tutorial posted today looking at how to sanitize data in your application, specifically data coming from the user, when calling shell commands.

Neglecting to sanitize user input that may subsequently be passed to system-level functions could allow attackers to do massive internal damage to your information store and operating system, deface or delete Web files, and otherwise gain unrestricted access to your server. And that's only the beginning.

He starts with a "real world" example of non-filtered data that could pass through a "rm" command and erase your entire drive. He offers two solutions for preventing this sort of hack using the escapeshellcmd and escapeshellarg functions.

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Gareth Heyes' Blog:
Non alphanumeric code in PHP
September 23, 2011 @ 10:05:47

Gareth Heyes has tried out an interesting experiment - running non-alphanumeric code in PHP using only octal escapes.

So a small php shell was tweeted around and it inspired me to investigate a way to execute non-alphanumeric code. First off I started with the idea of using octal escapes in PHP and constructing the escape so for example: 107 is "G" if I could construct the "107" and add the backslash to the beginning maybe I could construct "G".

A snippet of example code is included showing his octal-based code for creating a "G" (6 lines of pluses, parentheses, equals and a few more characters). By doing some trickery with bitwise operators on strings, he was able to combine characters and make the string "GET". Pretty clever, even if it's not entirely practical.

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Casey's Blog:
Make Your Life as a PHP Developer Twice as Easy With phpsh
July 05, 2011 @ 11:50:37

In his (Python) blog today Casey reminds the developer community about a handy tool that the developers at Facebook have made available to make a PHP coder's life easier - phpsh.

The developers at Facebook have brought PHP developers a powerful REPL now ala-Python to round out a solid toolbox that PHP developers already have. The project is called phpsh and is written in Python.

He includes the commands you'll need to get it pulled from github and working, providing you with an interactive shell right on your local machine (more powerful than the built-in PHP shell). You can also grab a zip or gzipped archive for download. For complete details on the tool and how to use it, see phpsh.org.

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Jordi Boggiano's Blog:
PHP Console in Your Browser
September 24, 2010 @ 11:51:49

Jordi Boggiano has a new post today looking at his PHP console script that works in your browser that sets up easily and works from your localhost web server - php-console.

Since I spend most of my days programming PHP I tend to need that a lot and a few years back I wrote a small script that would let me type php code in my browser and execute it. Nothing fancy, but quite useful. Over the years a few people got interest seeing me use it and asked for the sources, so instead of repackaging it every time, I thought I'd clean it up, polish a bit, add some features, and put it on github.

Setup is as simple as dropping the code somewhere in your local server's document root and offers a textarea for input and a expandable tree for the resulting output. It uses the Krumo tool to create this modified output. You can see a screenshot here.

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Johannes Schluter's Blog:
Now in trunk Improved interactive shell
May 31, 2010 @ 08:38:21

Johannes Schluter has a new post to his blog today about a recent addition to the latest trunk branch for PHP - a more interactive shell that will be installed right along with the language.

A few years ago I used another blog to write about "More PHP power on the command line" almost 5 years later the PHP interactive shell got a major update which went in PHP's trunk.

You can check out the commit message for more details on this new addition including paging ability and the ability to run PHP directly in the shell.

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