File Lock Contention


Great step by step explanation of investigating file lock contentions, specifically when dealing with php and sessions.

php 5.2 to 5.3 migration


The new release of PHP 5.3 brought many important additions and changes to PHP. Although longly awaited, some of the changes are not backwards compatible. Thus, code that worked fine with 5.2 may produce warnings or fail in 5.3.

Quick research shows that most prominent applications had to be patched or changed, even though minimally, to work cleanly with 5.3. To help people to convert their web applications to 5.3, I present here a migration script that would allow you to inspect your applications for potential migration problems.

MySQL Connection Management in PHP


This article is intended to highlight various basic topics concerning proper methods of handling connections to MySQL databases in PHP, guidelines for caching dynamic content, and a technique called "lazy loading". Hopefully by the end of the article you'll have learned how to combat a very widespread and potentially devastating scalability problem seen in an enormous number of PHP web applications...

Checklist for Securing PHP Configuration


The Apache/PHP/MySQL stack is immensely popular for web application development. Its components are powerful, versatile and Free. Unfortunately however, PHP comes with a default configuration that is not suitable for production mode, and may cause developers to use insecure techniques during the development phase. Inside is a check list of settings that are intended to harden the default PHP installation...

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