- Part 1: Console Input and Output
- Part 2: File Input and Output
- Part 3: Server-side Usage
- Part 4: Working with Composer
PHP: Hypertext Preprocessor (PHP) is a server-side scripting language frequently used as part of web development and as a command-line tool for common tasks.
By default, PHP will write and read data to and from the Standard Input (STDIN). This allows PHP to read and write to the command-line (console).