PHP Shell is a shell wrapped in a PHP script. It’s a tool you can use to execute arbitrary shell-commands or browse the filesystem on your remote webserver. This replaces, to a degree, a normal telnet connection, and to a lesser degree a SSH connection.
A convenient interface to execute shell-commands or browse the filesystem on your remote web server. Similar to a telnet or SSH connection. Use it for administration and maintenance of your web site using commands like ps, cat, gunzip, and more.
Safe Mode is the nemisis of PHP Shell. If PHP is running in Safe Mode then PHP Shell will normally not work. So, PHP Shell will work with safe_mode = Off
phpshell.php: This is the script you run when you use PHP Shell.
config.php: Configuration file in the INI format.
pwhash.php: Password hashing script. This is used to generate secure hashed passwords which you should use to prevent others from getting to know your password by reading the config.php file.