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<?php
/*
 * Base MPDControl Class
 * Provide functions for connecting and retrieving raw data from MPD
 */
class MPDControl {
	var $hostname, $port, $timeout, $socket, $errno, $errstr;
	function MPDControl($hostname = 'localhost', $port = '6600', $timeout = 3) {
		$this->hostname = $hostname;
		$this->port = $port;
		$this->timeout = $timeout;
	}

	function connect() {
		$this->socket = @fsockopen($this->hostname, $this->port, $this->errno, $this->errstr, $this->timeout);
		if (!$this->socket) {
			return false;
		} else {
			$this->getData();
			return true;
		}
	}

	function disconnect() {
		$this->sendRaw('close');
		fclose($this->socket);
	}

	function getData() {
		$lines = Array();
		$line = '';
		while ((substr($line, 0, 2) != 'OK') && (substr($line, 0, 3) != 'ACK')) {
			$line = fgets($this->socket, 256);
			$lines[] = $line;
		}
		unset($lines[count($lines)-1]);
		return $lines;
	}

	function sendRaw($string) {
		fwrite($this->socket, $string."\n");
	}
}

<?php
/*
 * Extended version of MPDControl
 * Provides function for getting commonly used info
 */
class ExtendedMPDControl extends MPDControl {
	function getNowPlaying() {
		$this->sendRaw('currentsong');
		$song = $this->getData();
		foreach ($song as $line) {
			$line = explode(':', $line);
			switch ($line[0]) {
			case 'Artist':
				$artist = trim($line[1]);
				break;
			case 'Title':
				$title = trim($line[1]);
				break;
			}
		}
		return Array((empty($artist) ? 'None' : $artist), (empty($title) ? 'None' : $title));
	}

	function randomOn() {
		$this->sendRaw('random 1');
		$this->getData();
	}

	function randomOff() {
		$this->sendRaw('random 0');
		$this->getData();
	}

	function play($id = '') {
		$this->sendRaw('play '.$id);
		$this->getData();
	}

	function stop() {
		$this->sendRaw('stop');
		$this->getData();
	}

	function clear() {
		$this->sendRaw('clear');
		$this->getData();
	}

	function remove($id) {
		$this->sendRaw('delete '.$id);
		$this->getData();
	}

	function add($path) {
		$this->sendRaw('add "'.$path.'"');
		$this->getData();
	}

	function getPlaylist() {
		$this->sendRaw('playlistinfo');
		$buffer = $this->getData();
		$playpos = -1;
		$artist = $album = $title = '';
		$playlist = Array();
		foreach ($buffer as $line) {
			$line = explode(':', $line);
			switch ($line[0]) {
				case 'Artist':
					$artist = trim($line[1]);
					break;
				case 'Album':
					$album = trim($line[1]);
					break;
				case 'Title':
					$title = trim($line[1]);
					break;
				case 'Pos': // End of song output
					$playlist[$playpos+1] = Array($artist, $album, $title);
					$playpos = trim($line[1]);
					$artist = $album = $title = '';
					break;
			}
		}
		return $playlist;
	}
}