More than 100 presentation materials to raise PHP skills

Php.net which is a distributor of PHP and many development information is available. In fact there is a presentation material by top level PHP developers and there are places where you can easily summarize the performance, such as database, debugging, security, expansion, localization, acceleration and optimization etc. Although it is only basic, it may be the best material for people who want to defeat PHP.
PHP Presents
http://talks.php.net/

Also, the details on the information obtained on the site of php.net are detailed below.

【PHP Watch】 24th Treasury of PHP related information, php.net walking way: ITpro
http://itpro.nikkeibp.co.jp/article/COLUMN/20060220/230039/