https://www.theregister.co.uk/2019/08/27/php_europe_cancelled/

Under the heading, "Diversity Matters!" the website for the PHP Central Europe developer conference (PHP.CE) says, "PHP Central Europe Conference is committed to creating a conference that is as inclusive as possible."

Over the weekend, organizers of the conference, which had been scheduled for October 4-6 in Dresden, Germany, ended the event evermore after two scheduled speakers issued public statements that they would not be attending this year, citing concerns about the lack of diversity.