24 Cool PHP Libraries You Should Know About

http://tutorialzine.com/2013/02/24-cool-php-libraries-you-should-know-about/

Create more advanced custom form type in Symfony 2.0

http://l3l0.eu/lang/en/2012/07/custom-advanced-symfony-2-form-type/

DBeaver – universal database manager

DBeaver is free and open source (GPL) universal database tool for developers and database administrators.

Trait in PHP 5.4

http://www.xpertdeveloper.com/2011/11/trait-in-php/

Association Mapping

This chapter introduces association mappings which are used to explain references between objects and are mapped to a relational database using foreign keys.

Doctrine 2 in Depth

http://www.krueckeberg.org/notes/d2.html

Introduction to Mapping Object Relationships

http://www.krueckeberg.org/notes/relationships.html

Skuteczne newslettery i e-mail marketing bez abonamentu – FreshMail

http://freshmail.pl/

Difference between find, locate and whereis

http://software-talk.org/blog/2012/12/linux-difference-between-find-locate-and-whereis/

Sorting on multiple columns in Sonata Admin

http://www.phpassionate.com/2013/02/06/sorting-on-multiple-columns-in-sonata-admin/