Derivante

Extensible PHP Caching Library

Everyone has probably already seen every caching class there ever was and ever will be. However, when I was searching for a class that could easily be switched from one data store to the next I couldn't find a thing. (…)

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ActiveRecord and Zend_Paginator_Adapter_Interface

Zend has a lot of tools to help speed up the application development process. One such tool I found useful, was Paginator. I am using php-activerecord in my project using Zend_Framework as the backend, to tie the two together is (…)

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PHP Content Rating / Confidence

For those web masters dealing with user feedback looking to weight content finding the right algorithm can be challenging. From experience, there is going to be no out of the box solution since each site and the requirements will be (…)

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PHP Google Analytics API

GAPI 1.3 released this past month. First, read the Google Analytics Data API Reference and then read up on dimensions, metrics, and valid combinations of the two. The quotas apply to a single web property, so each analytics profile (site1, (…)

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SOLR Filtering Performance Increase

A couple months ago I wrote about the terrible performance and a work around for SOLR / Lucene search engine. I discovered that performance would drop off a cliff while using filter queries to narrow search results for search queries (…)

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PHP Rapid Application Development with ZF1.8 and AR

In the days since I began programming in PHP the web has come a long way. With the 5.3 release of PHP, the OOP side of things are finally getting a much needed polish. In the past year there's been (…)

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PHP ActiveRecord Available for Beta Testing

We've been working hard to get this ready for people to start poking around in and we're happy to announce that it's now ready for public beta testing! You can grab it from http://github.com/kla/php-activerecord/. Play with it... break it... and (…)

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PHP ActiveRecord with PHP 5.3

Update! Find the latest here. PHP 5.3 gets ActiveRecord! A quick search to find an implementation of active record for php on google is discouraging when one considers the state of ActiveRecord for Ruby on Rails. The reader will notice (…)

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SOLR Performance Benchmarks – Single vs. Multi-core Index Shards

Single vs. multi-core sharded index. Which one is the right one? There is not a whole lot of information out there, especially when it comes to hard numbers and comparisons. There are a couple reasons for this. The first one (…)

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100x Increase in SOLR Performance and Throughput

Is your SOLR installation running slower than you think it should? Performance, throughput and scalability not what you are expecting or hoping? Do you constantly see that others have much higher SOLR query performance and scalability than you do? All (…)

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PHP/KML Polyline Simplification with Douglas-Peucker

Quality GIS data sometimes comes with a lot more precision than what is usable for Google Maps (or other mapping software). The problem lies in the number of points representing a polygon that you want to overlay. A county representation (…)

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PHP GIS Functions

I have been working a lot of with PHP and GIS consulting for CitySquares and the History Engine. I found searching for everything I needed to do basic processing & Google Integration tedious and painful. So here is a collection (…)

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Bayesian filter training with N-gram

Bayesian filtering is based on the principle that most events are dependent and that the probability of an event occurring in the future can be inferred from the previous occurrences of that event (link). A probability value is then assigned (…)

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SEO: Taking control of search

In my experience the majority of web agencies and developers still do not take search seriously enough. Most businesses have very simple requests, "How do I show up for keyword for people in the area", "How do I show up (…)

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Bayesian Filtering & Financial Applications

A friend of mine and I recently started a new project. After kicking around several ideas we finally reached a consensus on applying software prediction to financial data. This has been pursued pretty heavily but from a home brew stand (…)

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