Having access to the current status of public servers can empower your applications to make decisions and respond to problems automatically. Acknowledging a service is offline can also save endless support emails. In this tutorial, I'll show you how to keep track of your server status by scanning ports on your server with PHP.

They show how to check a remote instance (a socket open with a timeout) and how to run through a list of ports, looping from one to one-thousand and running an fsockopen on each. They make a sample script to show these two combined - a simple page that loops through the common protocols (HTTP, FTP, SSH, etc) and checks to see if the remote machine is running something on that port.

The replace is as simple three line call, much the same as PHP's and the split call, while a bit more complex, is still pretty straight forward (it just needs a few extra variables).

Other methods in the post include a "switch" method, defining a procedure and updating variable by its name.

Trent Richardson created a very small and simple JsonSQL library for JavaScript which allows you to run an extremely limited subset of SQL against a Json array/object. I quickly ported it over to PHP 5 and it works like a charm, although the syntax for the WHERE clause isn't exactly the same but the rest ported across properly.

He's included some sample source code of it in action - selecting information out of an array of user information, once changing their order and the other grabbing a username. Complete source for the library is included too.

They're broken up into a series of posts to his blog and include:

• include
• ltrim
• str_rot13
• strtoupper
• stripslashes
• nl2br
• str_pad

Each post includes a description, the parameters the function takes in, return values, credits for the code and the Javascript code to make it work. For a library with the complete list of ported functions, you can download this .js file (or the compressed version).

You can check out the full list of ported functions in this category on his blog.

I have begun to port Hamcrest, which provides a library of matcher objects (also known as constraints or predicates) allowing "match" rules to be defined declaratively, to be used in other frameworks. Typical scenarios include testing frameworks, mocking libraries and UI validation rules, to PHP.

The hamcrest-php project compliments other current hamcrest-related projects and his ultimate goal is to make it available to the PHPUnit testing community (as well as with the PHPMock effort).

One of the things I miss most from Rails is ActiveSupport, the module that modifies Ruby's core classes (numbers, strings, more) with handy utility methods. They tie so well into the language, most Rails developers don't realize they aren't core methods.

He starts with a Ruby example, showing how they work to show things like camelized strings, times and evaluations. Since PHP doesn't support the same syntax, he had to work around it with some "PHP trickery" in PHP5 to handle it similarly. You can check out the results in the examples in his blog or by downloading the library and trying it out for yourself.

I'm starting a new job soon and I'll be working primarily with PHP. Since I've been a rubyist for the last 2 years I'm looking at PHP from a Rails development perspective. Before working exclusively with Ruby I hung onto to PHP (because of the project I was working on) by porting Rails bits to PHP. I eventually gave up on porting Rails to PHP after my project's funding was cut.

His experience found that there were a few things that caused the problem in the transition between Ruby and PHP like "in Ruby everything is an object" and some Reflection differences between the two languages. He has a little sample object he's created the code for, but it still doesn't work quite right.

In the end, he points out that the Row Data Gateway is a much easier method to get working in PHP (complete with sample code).

The latest available version, Roadsend PHP SiteManager 4.0.0 beta, was ported to PHP5. Database access has switched from PEAR to PDO. A script is included to help port existing projects. This version of SiteManager no longer uses PEAR DB - it uses the PDO database routines in PHP5 so there are a few changes to make. There is a script included in bin/php4tophp5.php which you can run on your current scripts to make most of the changes

Currently, you can download the latest beta from their website and check out the Trac website for the project to keep up with the latest advancements.

phpQuery is PHP-port of well known and great web2.0 JS library, which jQuery is. It's not something like JQPie, which is form of JS code generator and server-client layer.

They include a short example of adding content to a page (a new list element) that uses the DOM extension in PHP5 to make the action happen. You can check out the library as a part of their plainTemplate package.

Last month there were at least two inquiries at the Bangalore PHP UG on how to get PHP to communicate with the server's serial port. I didn't think it was possible, but here's what a quick google search turned up...

Two tools popped up on the radar - the PHP Serial Extension and the PHP Serial Class. Both have their benefits, and both can be used for the same kinds of functionality - one for the Windows side and the other for Linux-ish machines. The first seems to be a bit more flexible in its approach, though.