This thread will be covered with the most useful resources to learn one of the most greatest open-source programming language PHP.
Some facts about PHP: PHP is a scripting language originally designed for producing dynamic web pages. It has evolved to include a command line interface capability and can be used in standalone graphical applications.
While PHP was originally created by Rasmus Lerdorf in 1995, the main implementation of PHP is now produced by The PHP Group and serves as the de facto standard for PHP as there is no formal specification. PHP is free software released under the PHP License, however it is incompatible with the GNU General Public License (GPL), due to restrictions on the usage of the term PHP.
PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. It generally runs on a web server, taking PHP code as its input and creating web pages as output. It can be deployed on most web servers and on almost every operating system and platform free of charge. PHP is installed on more than 20 million websites and 1 million web servers (Wikipedia).
PHP is also an great and open-source alternative to Microsoft's Active Server Pages (ASP). PHP could be considered one of the most popular web programming languages online - The best thing about it is that its FREE!
Feel free to contribute to the list - if your recommendation is found good and useful it will be put onto the list below.
Here goes...
PHP programming language learning resources!PHP Home (www.php.net)
PHP with W3Schools (http://www.w3schools.com/php/default.asp)
more coming soon...
Hope this thread has helped some people who are seeking to learn this powerful and amazing server-side scripting langauge.