It seems Badoo, a relatively large dating social network running on PHP, moved to PHP7 and their dev blog says they’ve saved a million dollars. The article explains the road leading up to the change to PHP7, including checking out HHVM and its disadvantages in their situation. I thought it was a nice read and another “win” for PHP7 and for PHP. It helps dispel the “PHP isn’t enterprise ready” myth.
Just in case somebody didn’t know, Badoo (not to be confused with Baidu) is a large dating social network, which mostly technologically famous for creating a php-fpm process manager that is used virtually in every nginx-based php installation.
Their somewhat less known contributions to open source are
Pinba, a realtime monitoring/statistics server for PHP, which is IMO more suitable for the relatively big farms of php servers.
Blitz, a php_templates-like templating engine, which is a bit out of fashion nowdays