diff --git a/src/pocketmine/CrashDump.php b/src/pocketmine/CrashDump.php
index 3c981a4b9..96ebccb66 100644
--- a/src/pocketmine/CrashDump.php
+++ b/src/pocketmine/CrashDump.php
@@ -160,7 +160,7 @@ class CrashDump{
 			];
 			$error["fullFile"] = $error["file"];
 			$error["file"] = cleanPath($error["file"]);
-			$error["type"] = isset($errorConversion[$error["type"]]) ? $errorConversion[$error["type"]] : $error["type"];
+			$error["type"] = $errorConversion[$error["type"]] ?? $error["type"];
 			if(($pos = strpos($error["message"], "\n")) !== false){
 				$error["message"] = substr($error["message"], 0, $pos);
 			}
diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index f20cdc342..27adefe49 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -2381,7 +2381,7 @@ class Player extends Human implements CommandSender, InventoryHolder, ChunkLoade
 							];
 
 							$damage = [
-								EntityDamageEvent::MODIFIER_BASE => isset($damageTable[$item->getId()]) ? $damageTable[$item->getId()] : 1,
+								EntityDamageEvent::MODIFIER_BASE => $damageTable[$item->getId()] ?? 1,
 							];
 
 							if(!$this->canInteract($target, 8)){
diff --git a/src/pocketmine/item/Item.php b/src/pocketmine/item/Item.php
index 02f74ed83..eab5a0ae2 100644
--- a/src/pocketmine/item/Item.php
+++ b/src/pocketmine/item/Item.php
@@ -272,7 +272,7 @@ class Item implements ItemIds, \JsonSerializable{
 	 * @return Item
 	 */
 	public static function getCreativeItem(int $index){
-		return isset(Item::$creative[$index]) ? Item::$creative[$index] : null;
+		return Item::$creative[$index] ?? null;
 	}
 
 	public static function getCreativeItemIndex(Item $item) : int{
@@ -597,7 +597,7 @@ class Item implements ItemIds, \JsonSerializable{
 	public function getNamedTagEntry($name){
 		$tag = $this->getNamedTag();
 		if($tag !== null){
-			return isset($tag->{$name}) ? $tag->{$name} : null;
+			return $tag->{$name} ?? null;
 		}
 
 		return null;
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index d831fb491..22565e869 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -532,7 +532,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @return Player[]
 	 */
 	public function getChunkPlayers(int $chunkX, int $chunkZ) : array{
-		return isset($this->playerLoaders[$index = Level::chunkHash($chunkX, $chunkZ)]) ? $this->playerLoaders[$index] : [];
+		return $this->playerLoaders[Level::chunkHash($chunkX, $chunkZ)] ?? [];
 	}
 
 	/**
@@ -544,7 +544,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @return ChunkLoader[]
 	 */
 	public function getChunkLoaders(int $chunkX, int $chunkZ) : array{
-		return isset($this->chunkLoaders[$index = Level::chunkHash($chunkX, $chunkZ)]) ? $this->chunkLoaders[$index] : [];
+		return $this->chunkLoaders[Level::chunkHash($chunkX, $chunkZ)] ?? [];
 	}
 
 	public function addChunkPacket(int $chunkX, int $chunkZ, DataPacket $packet){
@@ -888,7 +888,7 @@ class Level implements ChunkManager, Metadatable{
 			$chunkZ = $loader->getZ() >> 4;
 
 			$index = Level::chunkHash($chunkX, $chunkZ);
-			$existingLoaders = max(0, isset($this->chunkTickList[$index]) ? $this->chunkTickList[$index] : 0);
+			$existingLoaders = max(0, $this->chunkTickList[$index] ?? 0);
 			$this->chunkTickList[$index] = $existingLoaders + 1;
 			for($chunk = 0; $chunk < $chunksPerLoader; ++$chunk){
 				$dx = mt_rand(-$randRange, $randRange);
@@ -1769,7 +1769,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @return Entity
 	 */
 	public function getEntity(int $entityId){
-		return isset($this->entities[$entityId]) ? $this->entities[$entityId] : null;
+		return $this->entities[$entityId] ?? null;
 	}
 
 	/**
@@ -1856,7 +1856,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @return Tile
 	 */
 	public function getTileById(int $tileId){
-		return isset($this->tiles[$tileId]) ? $this->tiles[$tileId] : null;
+		return $this->tiles[$tileId] ?? null;
 	}
 
 	/**
diff --git a/src/pocketmine/level/SimpleChunkManager.php b/src/pocketmine/level/SimpleChunkManager.php
index 4f0d5b8ec..56931f0b1 100644
--- a/src/pocketmine/level/SimpleChunkManager.php
+++ b/src/pocketmine/level/SimpleChunkManager.php
@@ -103,7 +103,7 @@ class SimpleChunkManager implements ChunkManager{
 	 * @return FullChunk|null
 	 */
 	public function getChunk(int $chunkX, int $chunkZ){
-		return isset($this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)]) ? $this->chunks[$index] : null;
+		return $this->chunks[Level::chunkHash($chunkX, $chunkZ)] ?? null;
 	}
 
 	/**
diff --git a/src/pocketmine/level/format/LevelProviderManager.php b/src/pocketmine/level/format/LevelProviderManager.php
index 0ef74c782..70e4bb10d 100644
--- a/src/pocketmine/level/format/LevelProviderManager.php
+++ b/src/pocketmine/level/format/LevelProviderManager.php
@@ -62,6 +62,6 @@ abstract class LevelProviderManager{
 	public static function getProviderByName($name){
 		$name = trim(strtolower($name));
 
-		return isset(self::$providers[$name]) ? self::$providers[$name] : null;
+		return self::$providers[$name] ?? null;
 	}
 }
\ No newline at end of file
diff --git a/src/pocketmine/level/format/anvil/Anvil.php b/src/pocketmine/level/format/anvil/Anvil.php
index b48a5ec2f..88fe9c11f 100644
--- a/src/pocketmine/level/format/anvil/Anvil.php
+++ b/src/pocketmine/level/format/anvil/Anvil.php
@@ -117,7 +117,7 @@ class Anvil extends McRegion{
 	 * @return RegionLoader
 	 */
 	protected function getRegion($x, $z){
-		return isset($this->regions[$index = Level::chunkHash($x, $z)]) ? $this->regions[$index] : null;
+		return $this->regions[Level::chunkHash($x, $z)] ?? null;
 	}
 
 	/**
diff --git a/src/pocketmine/level/format/generic/BaseFullChunk.php b/src/pocketmine/level/format/generic/BaseFullChunk.php
index 0cc8aa6a0..d9c2ecc23 100644
--- a/src/pocketmine/level/format/generic/BaseFullChunk.php
+++ b/src/pocketmine/level/format/generic/BaseFullChunk.php
@@ -355,8 +355,7 @@ abstract class BaseFullChunk implements FullChunk{
 	}
 
 	public function getTile($x, $y, $z){
-		$index = ($z << 12) | ($x << 8) | $y;
-		return isset($this->tileList[$index]) ? $this->tileList[$index] : null;
+		return $this->tileList[($z << 12) | ($x << 8) | $y] ?? null;
 	}
 
 	public function isLoaded(){
diff --git a/src/pocketmine/level/format/mcregion/McRegion.php b/src/pocketmine/level/format/mcregion/McRegion.php
index 93d3a76cf..f876cd197 100644
--- a/src/pocketmine/level/format/mcregion/McRegion.php
+++ b/src/pocketmine/level/format/mcregion/McRegion.php
@@ -220,7 +220,7 @@ class McRegion extends BaseLevelProvider{
 	}
 
 	public function unloadChunk($x, $z, $safe = true){
-		$chunk = isset($this->chunks[$index = Level::chunkHash($x, $z)]) ? $this->chunks[$index] : null;
+		$chunk = $this->chunks[$index = Level::chunkHash($x, $z)] ?? null;
 		if($chunk instanceof FullChunk and $chunk->unload(false, $safe)){
 			unset($this->chunks[$index]);
 			return true;
@@ -246,7 +246,7 @@ class McRegion extends BaseLevelProvider{
 	 * @return RegionLoader
 	 */
 	protected function getRegion($x, $z){
-		return isset($this->regions[$index = Level::chunkHash($x, $z)]) ? $this->regions[$index] : null;
+		return $this->regions[Level::chunkHash($x, $z)] ?? null;
 	}
 
 	/**
diff --git a/src/pocketmine/level/generator/Flat.php b/src/pocketmine/level/generator/Flat.php
index a77cb5364..84a384521 100644
--- a/src/pocketmine/level/generator/Flat.php
+++ b/src/pocketmine/level/generator/Flat.php
@@ -87,9 +87,9 @@ class Flat extends Generator{
 		$this->preset = $preset;
 		$preset = explode(";", $preset);
 		$version = (int) $preset[0];
-		$blocks = isset($preset[1]) ? $preset[1] : "";
-		$biome = isset($preset[2]) ? $preset[2] : 1;
-		$options = isset($preset[3]) ? $preset[3] : "";
+		$blocks = $preset[1] ?? "";
+		$biome = $preset[2] ?? 1;
+		$options = $preset[3] ?? "";
 		preg_match_all('#^(([0-9]*x|)([0-9]{1,3})(|:[0-9]{0,2}))$#m', str_replace(",", "\n", $blocks), $matches);
 		$y = 0;
 		$this->structure = [];
diff --git a/src/pocketmine/level/generator/biome/Biome.php b/src/pocketmine/level/generator/biome/Biome.php
index 1f3aa8913..37bce0ae3 100644
--- a/src/pocketmine/level/generator/biome/Biome.php
+++ b/src/pocketmine/level/generator/biome/Biome.php
@@ -107,7 +107,7 @@ abstract class Biome{
 	 * @return Biome
 	 */
 	public static function getBiome($id){
-		return isset(self::$biomes[$id]) ? self::$biomes[$id] : self::$biomes[self::OCEAN];
+		return self::$biomes[$id] ?? self::$biomes[self::OCEAN];
 	}
 
 	public function clearPopulators(){
diff --git a/src/pocketmine/level/generator/biome/BiomeSelector.php b/src/pocketmine/level/generator/biome/BiomeSelector.php
index 68da75484..30411b111 100644
--- a/src/pocketmine/level/generator/biome/BiomeSelector.php
+++ b/src/pocketmine/level/generator/biome/BiomeSelector.php
@@ -81,6 +81,6 @@ class BiomeSelector{
 		$rainfall = (int) ($this->getRainfall($x, $z) * 63);
 
 		$biomeId = $this->map[$temperature + ($rainfall << 6)];
-		return isset($this->biomes[$biomeId]) ? $this->biomes[$biomeId] : $this->fallback;
+		return $this->biomes[$biomeId] ?? $this->fallback;
 	}
 }
\ No newline at end of file
diff --git a/src/pocketmine/nbt/NBT.php b/src/pocketmine/nbt/NBT.php
index 38e911455..aa8f16869 100644
--- a/src/pocketmine/nbt/NBT.php
+++ b/src/pocketmine/nbt/NBT.php
@@ -290,7 +290,7 @@ class NBT{
 					throw new \Exception("Syntax error: invalid quote at offset $offset");
 				}
 			}elseif($c === "\\"){
-				$value .= isset($data{$offset + 1}) ? $data{$offset + 1} : "";
+				$value .= $data{$offset + 1} ?? "";
 				++$offset;
 			}elseif($c === "{" and !$inQuotes){
 				if($value !== ""){
diff --git a/src/pocketmine/updater/AutoUpdater.php b/src/pocketmine/updater/AutoUpdater.php
index 1b3e9f9f5..ebf1dcb95 100644
--- a/src/pocketmine/updater/AutoUpdater.php
+++ b/src/pocketmine/updater/AutoUpdater.php
@@ -68,7 +68,7 @@ class AutoUpdater{
 			"api_version" => $response["api_version"],
 			"build" => $response["build"],
 			"date" => $response["date"],
-			"details_url" => isset($response["details_url"]) ? $response["details_url"] : null,
+			"details_url" => $response["details_url"] ?? null,
 			"download_url" => $response["download_url"]
 		];
 
diff --git a/src/pocketmine/utils/MainLogger.php b/src/pocketmine/utils/MainLogger.php
index 4259f1edf..7afe1d627 100644
--- a/src/pocketmine/utils/MainLogger.php
+++ b/src/pocketmine/utils/MainLogger.php
@@ -133,7 +133,7 @@ class MainLogger extends \AttachableThreadedLogger{
 		}else{
 			$type = ($errno === E_ERROR or $errno === E_USER_ERROR) ? LogLevel::ERROR : (($errno === E_USER_WARNING or $errno === E_WARNING) ? LogLevel::WARNING : LogLevel::NOTICE);
 		}
-		$errno = isset($errorConversion[$errno]) ? $errorConversion[$errno] : $errno;
+		$errno = $errorConversion[$errno] ?? $errno;
 		if(($pos = strpos($errstr, "\n")) !== false){
 			$errstr = substr($errstr, 0, $pos);
 		}