PHP (recursive acronym for "PHP: Hypertext Preprocessor") is a widely-used Open Source general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.   PHP is a Server-side scripting, you can do much more with it.

  Writing client-side GUI applications. PHP is probably not the very best language to write windowing applications, but IF you know PHP very well, and would like to use some advanced PHP features in your client-side applications you can also use PHP-GTK to write such programs.

PHP-GTK is an extension to PHP, not available in the main distribution.   If you are interested in PHP-GTK, visit it's own website (http://gtk.php.net/).  

The topics in this collection are based on How the common commands are used in a practical sense.    No long reading, just test and proven working codes or scripts that you can use immediately.