console.php

<?php

system("stty -icanon");

define('LINE_RETURN', "\n");

class Console {

        // Input prompt
        public static $pi = "\033[36m>>\033[37m ";

        // Return prompt
        public static $po = "=> ";

        // Private variables
        private $history = array();
        private $cache = '';
        private $catch_cursor = array();

        /**
         * Factory of the class
         *
         * @return      void
         */
        public static function factory()
        {
                print("\033[1;30m");
                print("The ruby-like console for PHP\nCopyright 2010 - Birkir R Gudjonsson (birkir.gudjonsson@gmail.com)\n");
                print(self::$pi);
                return new self;
        }

        /**
         * Parse command
         *
         * @param       string          Command or line
         * @return      void
         */
         public function command($cmd = NULL)
         {
                if (substr($cmd,-1) == ';')
                {
                        $cmd = substr($cmd, 0, strlen($cmd)-1);
                }

                $cmd = trim($cmd);

                $this->history[] = $cmd;

                switch ($cmd)
                {
                        case "clear":
                                Command::_clear();
                                break;

                        case "exit":
                                Command::_exit();
                                break;

                        case "test":
                                Command::_test();
                                break;

                        default:
                                $cmd .= ';';
                                if ($cmd != ';')
                                {
                                        $this->result = NULL;
                                        eval('$this->result = '.$cmd);
                                        print("\033[1;31m");
                                        print((string) self::$po);
                                        print("\033[1;37m");
                                        is_object($this->result) ? print((string) $this->result) : var_dump($this->result);
                                        print("\033[37m");
                                }
                                break;
                }
         }

        public function handlechar($char = NULL)
        {
                $this->catch_cursor[] = (string) dechex(ord($char));

                $arrow = $this->catch_cursor[count($this->catch_cursor)-3].$this->catch_cursor[count($this->catch_cursor)-2].$this->catch_cursor[count($this->catch_cursor)-1];

                $backspace = substr($arrow, -2);

                if ($backspace == '7f' AND strlen($this->cache) > 1)
                {
                        printf("%c[D", 27); printf("%c[D", 27); printf("%c[D", 27); printf("%c[K", 27);
                        $this->cache = substr($this->cache, 0, strlen($this->cache)-1);
                        return FALSE;
                }
                elseif ($backspace == '7f')
                {
                        printf("%c[D", 27); printf("%c[D", 27); printf("%c[K", 27);
                        return FALSE;
                }

                switch ($arrow)
                {
                        case "1b5b41": // Up arrow
                                printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[K", 27);
                                return false;
                                break;
                        case "1b5b42": // Down arrow
                                printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[K", 27);
                                break;
                        case "1b5b43": // Right arrow
                                echo "HELLO RIGHT WORLD";
                                break;
                        case "1b5b44": // Left arrow
                                printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[D", 27);printf("%c[K", 27);
                                break;
                }

                switch ($char)
                {
                        case "\n":
                                self::command($this->cache);
                                $this->cache = '';
                                echo self::$pi;
                                return FALSE;
                                break;
                }

                $this->cache .= $char;
        }

}

class Command {

        public function _clear()
        {
                array_map(create_function('$a', 'print chr($a);'), array(27, 91, 72, 27, 91, 50, 74));
        }

        public function _exit()
        {
                exit;
        }

        public function _test()
        {
                echo 'my function';
        }

}

$console = Console::factory();

while ($c = fread(STDIN, 1))
{
        $console->handlechar($c);
}

echo 'I just died';

?>