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PHPMaster.com:
Running Monte Carlo Simulations in PHP
June 28, 2013 @ 12:19:53

On PHPMaster.com there's a new tutorial by J Armando Jeronymo that shows how you can run Monte Carlo simulations in PHP (more on that simulation type here).

One of the exciting things in the 1980′s was programming simulations to solve complex analytical problems, and one of the most useful techniques employed was running Monte Carlo simulations. The approach repeatedly runs a simulation many times over to calculate the most likely outcome. Although PHP isn't known as a scientific or research programming language, Monte Carlo simulations can easily be written in a PHP web app. In this article, I'll show you how.

He walks you through the whole problem he tries to solve with the simulation - a multi-step trip that involved different roads, situations and possible stops along the way. He breaks it out into the various stages (labeled with letters) and shows how you might render this as a "MyTrip" class with distances in "travel minutes". Following along with the Monte Carlo randomness, though, he shows how to inject a bit of randomness into the mix accounting for some of the trouble he had along the way.

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Link: http://phpmaster.com/running-monte-carlo-simulations-in-php

Community News:
CodeWorks 2010 (php|architect & Keith Casey)
September 21, 2010 @ 12:48:51

Both Keith Casey and php|architect have posted announcements about this year's CodeWorks traveling conference tour (previously announced here). First, from the official php|architect post:

CodeWorks 2010 (CWX for short) is a series of one-day technical conferences presented by the php|architect team and sponsored by Adobe. It's slated to stop in five cities, starting November 9th. [...] Each stop features talks presented by the php|a gang on various PHP-related topics, including object orientation, scalability, security, development tools and efficiently building your own APIs.

And from Keith Casey, a presenter on the tour:

This time around we've simplified the whole thing. The team is smaller. The format is simpler. And we're limiting the cities a bit more. We have four people doing 6 presentations on one track across five cities in a span of 10 days. If you've ever been to a tech conference, you know how much effort it can be.

For more information on the conference, check out its official site for dates, times and registration.

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Job Posting:
Worldwide Travel Directory Seeks LAMP Consultant (New York City, NY)
September 15, 2010 @ 12:29:44

Company Worldwide Travel Directory
Location New York City, NY (Downtown)
Title LAMP Consultant
Summary

A worldwide travel directory is seeking a sharp and well-qualified LAMP consultant to work on an online reservation system. This is an outstanding temporary opportunity for a highly analytical IT professional with substantial e-commerce experience, to join a advanced and growing atmosphere! Please consider this position by applying today for immediate consideration.

NOTE: Position is contract but could become long-term/permanent for the right fit.

Company Description
Worldwide Travel Directory

Job Description
In this short-term, temporary position, the LAMP Consultant will work on an online reservation for a worldwide travel directory. Candidates must come from an e-commerce background and have 5+ years of programming experience with Linux, Apache HTTP Server, MySQL, and PHP.

Required Skills

  • 5+ years of programming experience with Linux, Apache HTTP Server, MySQL, and PHP
  • Substantial e-commerce experience
  • Excellent written and verbal communication skills
  • Strong ability to work autonomously
  • Highly analytical
  • Experience with all phases of application development from initial design through deployment
  • Ability to interpret and analyze existing code base

Desired Skills

  • Experience in developing mobile apps
  • Prior exposure to online booking and travel development. i.e. Expedia, Travelocity, or similar

    For more information or to submit your resume, contact Michael J. Pisano at MPisano@execu-search.com.

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Community News:
CodeWorks 2010
September 09, 2010 @ 08:02:45

The php|architect folks have posted the details about this year's CodeWorks conference happening nine days in November and spread across five different cities all over the United States including Seattle, Orlando and Austin.

This year's theme is "Roadies, not Rock Stars". We are not rock stars, ninja's or guru's. We are code monkey's just like you and we do it because we love it. Just like you, we like to share what we have learned so others can benefit. Come join Marco Tabini, Ryan Stewart, Keith Casey and Cal Evans when we come to your town! Spend a day with us as we share with you what we've learned.

At each stop, this crew of four will present a one-day series of talks on things ranging from unit testing to APIs to working with OOP in PHP 5.3. You can find out more about the sessions that will be presented at your closest location on the CodeWorks site. You can also register and get in for the Early Bird price of $75 USD for a single ticket or $70 USD if you're part of a group.

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Ibuildings Blog:
The ElePHPant Challenge - Winners and Results
May 17, 2010 @ 15:56:27

Ibuildings has officially wrapped up their "Elephpant Challenge" contest they were holding to solve a routing problem that involved a globe-trotting PHP ElePHPant. Their latest post (from Ivo Jansch) reveals the results.

Contestants had to write a script that calculated the shortest route for the Elephpant. The contest has several side goals: entries were not not only validated against the given landmarks and a second secret set of landmarks, they also were scored based on their performance, code complexity and code size.

The shorted route, found using the Haversine Formula, involved stops in Mexico City, Cupertino, Hawaii and the Tower of Pisa. The winner for the Medium category was Andy Thompson with an average of 10 landmarks with 38 lines of code (in 333 seconds). The winner in the Senior category was Michiel Brandenburg with coming out on top with a runtime of 50 seconds in 46 lines of code.

The post also includes some interesting observations they found about the event including contestants' general adherence to the specs, how the choices the developers made really made a difference in the outcome and how difficult running a contest like this could really be. Congrats to the winners!

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Cal Evans' Blog:
ewt08 (elePHPant World Tour 2008)
September 09, 2008 @ 09:33:35

Cal Evans and Ivo Jansch have started up a bit of a contest for those owners of elePHPants out there - the elePHPant World Tour (ewt08):

Here's the basic premise. It seems obvious that elePHPants love to travel. Equally obvious is the fact that a lot of PHP developers love to take pictures. So, let's combine the two. If you spot an elePHPant while traveling, like near a landmark, or making it's way through the airport, snap a picture. Upload it to flickr and tag it with ewt08. Thanks in no small part to a bit of Web 2.0 magic and Wordpress, we'll steal the picture from flickr and post it on the blog.

In January of 2009 the PHP Women group will take a look at all of the photos and pick the best ones. There's multiple prizes so far including a copy of Zend Studio Professional and admission to the Dutch PHP Conference '09 (check out the about page for more).

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Job Posting:
Yahoo! Seeks PHP Developer (Santa Clara, CA)
August 29, 2008 @ 11:11:27

Company Yahoo!
Location Santa Clara, CA
Title PHP Developer
Summary

The Internet is a big, busy place, and we at Yahoo! are proud to stand out in the crowd. As the world's number one Internet brand, servicing over a half billion people, we're determined to maintain our commitment to delivering news, entertainment, information and fun... each and every day.

In order to maintain our position as one of the world's most trafficked Internet destinations, we're always on the lookout for people with big ideas and big talent to help us provide our visitors with the innovative products and services they've come to expect from Yahoo!. We're looking for people like you.

How Big Can You Think?
Yahoo! Travel is the leading travel research property on the Internet, with an interesting suite of research, comparison and planning products including Travel Guides, FareChase, and Trip Planner. If you are intrigued by the challenge of building highly scalable and reliable software in a dynamic team environment, and you are excited by the thought that millions will see your work every day, this job is for you!

Required Knowledge:

  • BS in computer science (MS/Ph.D. preferred)
  • Fluency in a C-style language (Java, C/C++, C#) is a must.
  • Good understanding of algorithms, data structures, performance optimization techniques, and object-oriented programming.
  • Strong debugging skills and the ability to optimize code for speed.
  • Excellent problem-solving skills.

    Preferred Knowledge:

    • Previous experience with web server technologies and knowledge of databases
    • Keep up-to-date with competing Web 2.0 technologies.
    • Experience in PHP, PERL and shell scripting would be highly preferred.

    PLEASE COME AND VISIT US AT YAHOO BOOTH AT THE PHP CONFERENCE Sept 15-18

    Yahoo! Inc. is an equal opportunity employer. For more information or to search all of our openings, please visit http://careers.yahoo.com

    Send resumes to Shawn Cartwright Shawncar@yahoo-inc.com

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    Ibuildings Blog:
    Dutch PHP Conference news
    May 28, 2008 @ 11:17:49

    Ivo Jansch has posted some great news to the Ibuildings blog today - things about the upcoming Dutch PHP conference.

    We have some updates regarding the Dutch PHP Conference in June (13th and 14th).

    The first bits of great news surround the attendance - the conference day alone is over 95% full and the tutorial day is even more packed with only a few seats left. A pre-conference part has also been set up (see the post for the details of when and where). They've even set up a page of travel information to help you if you're looking for a way to get to the Amsterdam RAI for the two-day event.

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