Frontend technologies like HTML, CSS, JavaScriptPHP web frameworks like Laravel, CodeIgniter, etc.Web servers and database languagesGraphic design softwareContent management systemObject-oriented PHP programmingCode versioning tools like CVS, SVN, Git, etc.Familiarity with SQL/MySQL databasesMVC design patternsIntegration of databases and data sources into a unified systemOpen-source projects like Drupal, Joomla, etc.Integration with third-party APIs like Facebook, Google, etc.Using XML, HTTP requests, JSON parsing, package installers like pecl, etc.Data structure and algorithmsEmail and messaging appsKnowledge of AJAX, jQuery, MySQLWriting T-SQL queries, stored procedures, triggers, functions, etc.Scaling and tuning database applications, modeling, performance optimization, etc.