PHP7 Improved performance up to twice as fast as PHP 5.6 ,Consistent 64-bit support,Combined comparison Operator (<=>),scalar type declarations any many others new features.Return type declaration a great features what i think.You can specify a return type for a function.You can define both scalar type and return type declaration in a same function.Let see an example how to use this.
Working in web application area within 5 years.Developed different types of complicated and critical web application.
Mostly work on php and its framework.Expert on laravel,cakephp,codeigniter and if there is tiny or api base project then i use micro framework slim.I am a fan and lover of laravel.Expert on wordpress also.
For database work on mysql with differents types orm like active record,eloquent,propel.
Expert on blade and twig template engine.
Use javascript,jqurey,angular js for better user experience and bootstrap for responsive UI.
Git use for version control.
My developing environment is linux and LAMP or nignx