The interstellar destination below was created using the DayTrippers Planet Generation rules (now in beta testing). Click here to generate another one.
$planetCount += rand(1,6);
$planetCountDice–;
}
return $planetCount;
}
	function planetSize($planetMod) {
		$planetSizeArray = array(“”, “”, “Small Rock Planet”, “Small Rock Planet”, “Asteroid”, “Moon”, “Artificial Satellite”, “Medium Rock Planet”, “Large Rock Planet”, “Gas Giant”, “Gas Giant”, “Gas Giant”, “Rogue Planet”);
		$gravityModArray = array(0, 0, -3, -3, -3, -5, -2, -1, 0, 5, 5, 5, -3);
		$planetSizeRoll = rand(1,6) + rand(1,6) + $planetMod;
		if($planetSizeRoll < 2) {
			$planetSizeRoll = 2;
		}
		if($planetSizeRoll > 12) {
			$planetSizeRoll = 12;
		}
		$planetSize = $planetSizeArray[$planetSizeRoll];
		$gravityMod = $gravityModArray[$planetSizeRoll];
		return array($planetSize, $gravityMod);
	}
	function gravity($gravityMod) {
		$gravityBase = 0;
		$divide = 0;
		$gravityArray = array(“”, “”, “12”, “12”, “12”, “11”, “11”, “1”, “2”, “2”, “2”, “4”, “4”, “4”, “6”);
		$atmoModArray = array(0, 0, -2, -2, -2, -1, -1, 0, 3, 3, 3, 5, 5, 5, 6);
		$gravityRoll = rand(1,6) + rand(1,6) + $gravityMod;
		if($gravityRoll < 2) {
			$gravityRoll = 2;
		}
		if($gravityRoll > 14) {
			$gravityRoll = 14;
		}
		$gravityVal = $gravityArray[$gravityRoll];
		if($gravityVal > 10) {
			$gravityVal -= 10;
			$divide = 1;
		}
		while($gravityVal > 0) {
			$gravityBase += rand(1,6);
			$gravityVal–;
		}
		if($divide) {
			$gravity = number_format(1 / $gravityBase, 2);
		} else {
			$gravity = $gravityBase;
		}
		$atmoMod = $atmoModArray[$gravityRoll];
		return array($gravity, $atmoMod);
	}
	function atmosphere($atmoMod, $gravity = 1) {
		$atmoArray = array(“”, “”, “Atmosphere is escaping the planet”, “Atmosphere is escaping the planet”, “Atmosphere is escaping the planet”, “Extremely thin, no Oxygen”, “Chlorine”, “Carbon Dioxide”, “Nitrogen/Oxygen with heavy gases, Propane, Butane”, “Dense Air (Nitrogen/Oxygen)”, “Nitrogen/Oxygen with Ozone in Stratosphere”, “Nitrogen/Oxygen with trace toxins”, “Ammonia & Methane”, “Hydrogen & Helium”, “Exotic toxic gases”);
		$waterModArray = array(0, 0, -6, -6, -6, -6, -4, -3, -2, -1, 1, 0, -4, -5, -6);
		$atmosphereRoll = rand(1,6) + rand(1,6) + $atmoMod;
		if($atmosphereRoll < 2) {
			$atmosphereRoll = 2;
		}
		if($atmosphereRoll > 14) {
			$atmosphereRoll = 14;
		}
		$atmosphere = $atmoArray[$atmosphereRoll];
		$waterMod = $waterModArray[$atmosphereRoll];
		$pressure = $atmosphereRoll * $gravity;
		return array($atmosphere, $waterMod, $pressure);
	}
	function water($waterMod) {
		$waterArray = array(“”, “”, “No standing water”, “Arid rock/desert world, very little standing water”, “Arid rock/desert world, very little standing water”, “Arid rock/desert world, very little standing water”, “Semi-Arid world, water frozen or beneath surface”, “land”, “land”, “Ocean world”, “Water vapor makes up most of the atmosphere”);
		$waterRoll = rand(1,6) + rand(1,6) + $waterMod;
		if($waterRoll < 2) {
			$waterRoll = 2;
		}
		if($waterRoll > 10) {
			$waterRoll = 10;
		}
		$water = $waterArray[$waterRoll];
		return $water;
	}
	function climate() {
		$climateArray = array(“”, “”, “Frozen solid; ice & rock”, “Frozen solid; ice & rock”, “Arctic conditions”, “Arctic conditions”, “Cold”, “Temperate”, “Hot”, “Greenhouse conditions”, “Greenhouse conditions”, “Wildly variable”, “Hellish”);
		$precipDLArray = array(0, 0, 0, 0, 5, 5, 6, 7, 9, 8, 8, 5, 10);
		$climateRoll = rand(1,6) + rand(1,6);
		if($climateRoll < 2) {
			$climateRoll = 2;
		}
		if($climateRoll > 12) {
			$climateRoll = 12;
		}
		$climate = $climateArray[$climateRoll];
		$precipDL = $precipDLArray[$climateRoll];
		return array($climate, $precipDL);
	}
	function biosphere() {
		$biosphereArray = array(“”, “”, “Biotoxins in atmosphere”, “Biotoxins in atmosphere”, “No life”, “No life”, “Proto-organisms in suspension”, “Proto-organisms and non-mobile lifeforms”, “Non-sentient lower lifeforms”, “Sentient lifeforms”, “Sentient lifeforms”, “Highly evolved lifeforms”, “Highly evolved lifeforms”);
		$biosphereRoll = rand(1,6) + rand(1,6);
		$biosphere = $biosphereArray[$biosphereRoll];
		return $biosphere;
	}
/* BIDNEZ */
	$starIndex = 0;
	$starType = ‘Star’;
	$stars = array();
	$planetName = planetName();
	$starSizeData = starSize();
	/*
	$stars[0][‘starSize’] = $starSizeData[0];
	$stars[0][‘colorMod’] = $starSizeData[1];
	$stars[0][‘planetMod’] = $starSizeData[2];
	*/
	$starSize = $starSizeData[0];
	$colorMod = $starSizeData[1];
	$planetMod = $starSizeData[2];
	$starColorData = starColor($colorMod, 0); // 1=forcespecial 0=dont
	$starColor = $starColorData[0];
	$planetCountDice = $starColorData[1];
	if($starColor == ‘Special’) {
		$starSpecial = specialStar();
		$starType = $starSpecial;
		switch($starSpecial) {
			case ‘Dwarf’ :
				$starSize = ‘less than 0.1 times ‘;
				$starType = ‘Dwarf Star’;
				$starColorData = starColor(0);
				$starColor = $starColorData[0];
				if($starColor == ‘Special’) {
					$starColor = ‘Black’;
				}
				break;
			case ‘Cluster’ :
				$starType = ‘Star’;
				$starIndex++;
				$starColorData = starColor(0);
				$starColor = $starColorData[0];
				if($starColor == ‘Special’) {
					$starSize = ‘- tiny compared to ‘;
					$starType = ‘Neutron Star’;
					$starColor = ”;
				}
				break;
			case ‘Nova’ :
				$starSize = (rand(1,6) * rand(1,6) * 10) . ‘ light-years across’;
				$starColor = ”;
				break;
			case ‘Brown Dwarf Star’ :
			case ‘Pulsar’ :
			case ‘Quasar’ :
			case ‘Black Hole’ :
				$starSize = ‘- tiny compared to ‘;
				$starColor = ”;
				break;
			default :
				$starType = ‘Star’;
				break;
		}
	}
	$stars[0][‘starSize’] = $starSize;
	$stars[0][‘starType’] = $starType;
	$stars[0][‘starColor’] = $starColor;
	if($starIndex) {
		while($starIndex > 0) {
			$starSizeData = starSize();
			$starSize = $starSizeData[0];
			$colorMod = $starSizeData[1];
			$planetMod = $starSizeData[2];
			$starColorData = starColor($colorMod);
			$starColor = $starColorData[0];
			// $planetCountDice = $starColorData[1];
			if($starColor == ‘Special’) {
				$starSpecial = specialStar();
				$starType = $starSpecial;
				switch($starSpecial) {
					case ‘Dwarf’ :
						$starSize = ‘less than 0.1 times ‘;
						$starType = ‘Dwarf Star’;
						$starColorData = starColor(0);
						$starColor = $starColorData[0];
						if($starColor == ‘Special’) {
							$starColor = ‘Black’;
						}
						break;
					case ‘Cluster’ :
						$starType = ‘Star’;
						$starIndex++;
						$starColorData = starColor(0);
						$starColor = $starColorData[0];
						if($starColor == ‘Special’) {
							$starSize = ‘- tiny compared to ‘;
							$starType = ‘Neutron Star’;
							$starColor = ”;
						}
						break;
					case ‘Nova’ :
						$starSize = (rand(1,6) * rand(1,6) * 10) . ‘ light-years across’;
						$starColor = ”;
						break;
					case ‘Brown Dwarf Star’ :
					case ‘Pulsar’ :
					case ‘Quasar’ :
					case ‘Black Hole’ :
						$starSize = ‘- tiny compared to ‘;
						$starColor = ”;
						break;
					default :
						$starType = ‘Star’;
						break;
				}
			}
			$stars[$starIndex][‘starSize’] = $starSize;
			$stars[$starIndex][‘starType’] = $starType;
			$stars[$starIndex][‘starColor’] = $starColor;
			$starIndex–;
		}
	}
	$planetCount = planetCount($planetCountDice);
	$romanArray = array(”, ‘I’, ‘II’, ‘III’, ‘IV’, ‘V’, ‘VI’, ‘VII’, ‘VIII’, ‘IX’, ‘X’, ‘XI’, ‘XII’, ‘XIII’, ‘XIV’, ‘XV’, ‘XVI’, ‘XVII’, ‘XVIII’);
	$planetNumber = rand(1,$planetCount);
	$romanNumber = $romanArray[$planetNumber];
	$planetSizeData = planetSize($planetMod);
	$planetSize = $planetSizeData[0];
	$gravityMod = $planetSizeData[1];
	$gravityData = gravity($gravityMod);
	$gravity = $gravityData[0];
	$atmoMod = $gravityData[1];
	$atmosphereData = atmosphere($atmoMod, $gravity);
	$atmosphere = $atmosphereData[0];
	$waterMod = $atmosphereData[1];
	$pressure = $atmosphereData[2];
	$water = water($waterMod);
	if($water == ‘land’) {
		$watercover = (rand(1,6)+3)*10;
		$landcover = 100 – $watercover;
		$water = $landcover . ‘% land, ‘ . $watercover . ‘% water’;
	}
	$climateData = climate();
	$climate = $climateData[0];
	$precipDL = $climateData[1];
$biosphere = biosphere();
/* DISPLAY */
	echo ‘STELLAR SYSTEM ‘ . strtoupper($planetName) . ‘
‘;
	$i = 1;
	switch(count($stars)) {
		case 5 :
			echo ‘Pentary System:’;
			break;
		case 4 :
			echo ‘Quadrary System:’;
			break;
		case 3 :
			echo ‘Trinary System:’;
			break;
		case 2 :
			echo ‘Binary System:’;
			break;
		default :
			break;
	}
	foreach($stars AS $thing) {
		if(count($stars) > 1) {
			echo ‘
‘ . $i . ‘. ‘;
		}
		if($thing[‘starColor’] AND $thing[‘starColor’] == ‘Orange’) {
			echo ‘An ‘;
		} else {
			echo ‘A ‘;
		}
		if($thing[‘starColor’]) {
			echo $thing[‘starColor’] . ‘ ‘;
		}
		echo $thing[‘starType’] . ‘ ‘;
		echo $thing[‘starSize’];
		if($thing[‘starType’] != ‘Nova’) {
			echo ‘the size of Sol’;
		}
		$i++;
	}
	echo ‘
‘;
	echo ‘with ‘ . $planetCount;
	if($planetCount == 1) {
		echo ‘ planet in orbit.
‘;
	} else {
		echo ‘ planets in orbit.
‘;
	}
	echo ‘
‘ . strtoupper($planetName) . ‘ ‘ . $romanNumber . ‘
‘;
	echo ‘TYPE: ‘ . $planetSize . ‘
‘;
	echo ‘GRAVITY: ‘ . $gravity . ‘ G
‘;
	echo ‘ATMOSPHERE: ‘ . $atmosphere . ‘
‘;
	echo ‘PRESSURE: ‘ . $pressure . ‘ Earth atmospheres
‘;
	if($planetSize != ‘Gas Giant’) {
		echo ‘WATER: ‘ . $water . ‘
‘;
	}
	echo ‘CLIMATE: ‘ . $climate . ‘
‘;
	echo ‘PRECIP DL: ‘ . $precipDL . ‘
‘;
	echo ‘BIOSPHERE: ‘ . $biosphere . ‘
‘;
?>
‘;
?>
DayTrippers is a Surreal Science Fiction Reality-Hopping OSR RPG.  Now available at RPGnow.com.

