I want to know whether it is possible to develop desktop applications using the PHP language. In my case, I have never developed one with it.
If it possible, please give me referral link or detailed understanding of where i can improve my skills.
PHP-GTK is an extension for the PHP programming language that implements language bindings for GTK+. It provides an object-oriented interface to GTK+ classes and functions and greatly simplifies writing client-side cross-platform GUI applications.
GTK+ is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off tools to complete application suites.
It's possible, but it's rarely done. PHP was designed as a language for generating HTML and its functions aren't helpful in desktop applications.
Things will be easier if you learn another language.
PHP-GTK, PHP-QT, and PHP-Wx exist but don't have any significant community. Trying to make a deployable app will be difficult.