PFCongres is the web development conference in the Netherlands and welcomes everyone, including expert PHP-professionals, ultimate beginners, and everyone in between. Also, we do not only focus on PHP, but welcome talks on front-end and back-end development as well as enterprise related presentations. Please do not hesitate to propose, even if you are not sure your talk fits in our subject range.
You can submit your talk idea (accepting both Dutch and English sessions) on their submission form. They're also looking for sponsors for the event to help out with some of the costs of putting on a conference like this. If you're interested in helping out, send them an email.