Since end of 2008 with Yii framework. I'm #1 contributor to Yii 2 after Yii core devs: https://github.com/creocoder Also developed several famous extensions used inside mostly Yii apps: https://github.com/yiiext/nested-set-behavior 11 years with PHP, 7 years with Yii, well known by Yii core devs, have some of them as friends.