PHP conferences are PHP specific events, at which established, well known PHP speakers present their topics and users meet and discuss PHP related topics and have fun. They occur all over the world in many countries.
PHP.net always updates and announces PHP conferences from all over the world. You can check the list of current conferences happening in the PHP’s conference section.
There are some established conferences located in very comfy and easy to visit locations.
https://www.phpconference.nl/
http://laracon.us/
http://live.symfony.com/
https://cruise.phparch.com/
https://tek.phparch.com/
There are a lot more.