utilization of operator ??

src/Bridges/DatabaseTracy/ConnectionPanel.php

@@ -58,8 +58,8 @@ public function logQuery(Nette\Database\Connection $connection, $result)
 		$trace = $result instanceof \PDOException ? $result->getTrace() : debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
 		foreach ($trace as $row) {
 			if (isset($row['file']) && is_file($row['file']) && !Tracy\Debugger::getBluescreen()->isCollapsed($row['file'])) {
-				if ((isset($row['function']) && strpos($row['function'], 'call_user_func') === 0)
-					|| (isset($row['class']) && is_subclass_of($row['class'], '\\Nette\\Database\\Connection'))
+				if ((strpos($row['function'] ?? '', 'call_user_func') === 0)
+					|| (is_subclass_of($row['class'] ?? '', '\\Nette\\Database\\Connection'))
 				) {
 					continue;
 				}

src/Database/DriverException.php

@@ -40,7 +40,7 @@ public static function from(\PDOException $src)
 	 */
 	public function getDriverCode()
 	{
-		return isset($this->errorInfo[1]) ? $this->errorInfo[1] : NULL;
+		return $this->errorInfo[1] ?? NULL;
 	}
 
 
@@ -49,7 +49,7 @@ public function getDriverCode()
 	 */
 	public function getSqlState()
 	{
-		return isset($this->errorInfo[0]) ? $this->errorInfo[0] : NULL;
+		return $this->errorInfo[0] ?? NULL;
 	}
 
 

src/Database/Drivers/MySqlDriver.php

@@ -33,9 +33,8 @@ class MySqlDriver implements Nette\Database\ISupplementalDriver
 	public function __construct(Nette\Database\Connection $connection, array $options)
 	{
 		$this->connection = $connection;
-		$charset = isset($options['charset'])
-			? $options['charset']
-			: (version_compare($connection->getPdo()->getAttribute(\PDO::ATTR_SERVER_VERSION), '5.5.3', '>=') ? 'utf8mb4' : 'utf8');
+		$charset = $options['charset']
+			?? (version_compare($connection->getPdo()->getAttribute(\PDO::ATTR_SERVER_VERSION), '5.5.3', '>=') ? 'utf8mb4' : 'utf8');
 		if ($charset) {
 			$connection->query("SET NAMES '$charset'");
 		}
@@ -50,7 +49,7 @@ public function __construct(Nette\Database\Connection $connection, array $option
 	 */
 	public function convertException(\PDOException $e)
 	{
-		$code = isset($e->errorInfo[1]) ? $e->errorInfo[1] : NULL;
+		$code = $e->errorInfo[1] ?? NULL;
 		if (in_array($code, [1216, 1217, 1451, 1452, 1701], TRUE)) {
 			return Nette\Database\ForeignKeyConstraintViolationException::from($e);
 
@@ -157,7 +156,7 @@ public function getTables()
 		foreach ($this->connection->query('SHOW FULL TABLES') as $row) {
 			$tables[] = [
 				'name' => $row[0],
-				'view' => isset($row[1]) && $row[1] === 'VIEW',
+				'view' => ($row[1] ?? NULL) === 'VIEW',
 			];
 		}
 		return $tables;

src/Database/Drivers/OciDriver.php

@@ -27,13 +27,13 @@ class OciDriver implements Nette\Database\ISupplementalDriver
 	public function __construct(Nette\Database\Connection $connection, array $options)
 	{
 		$this->connection = $connection;
-		$this->fmtDateTime = isset($options['formatDateTime']) ? $options['formatDateTime'] : 'U';
+		$this->fmtDateTime = $options['formatDateTime'] ?? 'U';
 	}
 
 
 	public function convertException(\PDOException $e)
 	{
-		$code = isset($e->errorInfo[1]) ? $e->errorInfo[1] : NULL;
+		$code = $e->errorInfo[1] ?? NULL;
 		if (in_array($code, [1, 2299, 38911], TRUE)) {
 			return Nette\Database\UniqueConstraintViolationException::from($e);
 

src/Database/Drivers/PgSqlDriver.php

@@ -29,7 +29,7 @@ public function __construct(Nette\Database\Connection $connection, array $option
 
 	public function convertException(\PDOException $e)
 	{
-		$code = isset($e->errorInfo[0]) ? $e->errorInfo[0] : NULL;
+		$code = $e->errorInfo[0] ?? NULL;
 		if ($code === '0A000' && strpos($e->getMessage(), 'truncate') !== FALSE) {
 			return Nette\Database\ForeignKeyConstraintViolationException::from($e);
 

src/Database/Drivers/SqliteDriver.php

@@ -27,13 +27,13 @@ class SqliteDriver implements Nette\Database\ISupplementalDriver
 	public function __construct(Nette\Database\Connection $connection, array $options)
 	{
 		$this->connection = $connection;
-		$this->fmtDateTime = isset($options['formatDateTime']) ? $options['formatDateTime'] : 'U';
+		$this->fmtDateTime = $options['formatDateTime'] ?? 'U';
 	}
 
 
 	public function convertException(\PDOException $e)
 	{
-		$code = isset($e->errorInfo[1]) ? $e->errorInfo[1] : NULL;
+		$code = $e->errorInfo[1] ?? NULL;
 		$msg = $e->getMessage();
 		if ($code !== 19) {
 			return Nette\Database\DriverException::from($e);

src/Database/Drivers/SqlsrvDriver.php

@@ -275,7 +275,7 @@ public function getColumnTypes(\PDOStatement $statement)
 		$count = $statement->columnCount();
 		for ($col = 0; $col < $count; $col++) {
 			$meta = $statement->getColumnMeta($col);
-			if (isset($meta['sqlsrv:decl_type']) && $meta['sqlsrv:decl_type'] !== 'timestamp') { // timestamp does not mean time in sqlsrv
+			if (($meta['sqlsrv:decl_type'] ?? NULL) !== 'timestamp') { // timestamp does not mean time in sqlsrv
 				$types[$meta['name']] = Nette\Database\Helpers::detectType($meta['sqlsrv:decl_type']);
 			} elseif (isset($meta['native_type'])) {
 				$types[$meta['name']] = Nette\Database\Helpers::detectType($meta['native_type']);

src/Database/Helpers.php

@@ -277,7 +277,7 @@ public static function findDuplicates(\PDOStatement $statement)
 		$cols = [];
 		for ($i = 0; $i < $statement->columnCount(); $i++) {
 			$meta = $statement->getColumnMeta($i);
-			$cols[$meta['name']][] = isset($meta['table']) ? $meta['table'] : '';
+			$cols[$meta['name']][] = $meta['table'] ?? '';
 		}
 		$duplicates = [];
 		foreach ($cols as $name => $tables) {

src/Database/ResultSet.php

@@ -66,7 +66,7 @@ public function __construct(Connection $connection, $queryString, array $params)
 				$this->pdoStatement = $connection->getPdo()->prepare($queryString);
 				foreach ($params as $key => $value) {
 					$type = gettype($value);
-					$this->pdoStatement->bindValue(is_int($key) ? $key + 1 : $key, $value, isset($types[$type]) ? $types[$type] : PDO::PARAM_STR);
+					$this->pdoStatement->bindValue(is_int($key) ? $key + 1 : $key, $value, $types[$type] ?? PDO::PARAM_STR);
 				}
 				$this->pdoStatement->setFetchMode(PDO::FETCH_ASSOC);
 				$this->pdoStatement->execute();

src/Database/Structure.php

@@ -82,7 +82,7 @@ public function getPrimaryKeySequence($table)
 
 		foreach ($this->structure['columns'][$table] as $columnMeta) {
 			if ($columnMeta['name'] === $primary) {
-				return isset($columnMeta['vendor']['sequence']) ? $columnMeta['vendor']['sequence'] : NULL;
+				return $columnMeta['vendor']['sequence'] ?? NULL;
 			}
 		}
 

src/Database/Table/GroupedSelection.php

@@ -114,7 +114,7 @@ public function aggregation($function)
 	public function count($column = NULL)
 	{
 		$return = parent::count($column);
-		return isset($return) ? $return : 0;
+		return $return ?? 0;
 	}
 
 

src/Database/Table/Selection.php

@@ -944,7 +944,7 @@ public function getReferencedTable(ActiveRow $row, $table, $column = NULL)
 			}
 		}
 
-		return isset($selection[$checkPrimaryKey]) ? $selection[$checkPrimaryKey] : NULL;
+		return $selection[$checkPrimaryKey] ?? NULL;
 	}
 
 

src/Database/Table/SqlBuilder.php

@@ -795,7 +795,7 @@ private function getCachedTableList()
 	{
 		if (!$this->cacheTableList) {
 			$this->cacheTableList = array_flip(array_map(function ($pair) {
-				return isset($pair['fullName']) ? $pair['fullName'] : $pair['name'];
+				return $pair['fullName'] ?? $pair['name'];
 			}, $this->structure->getTables()));
 		}