Use Null Coalesce Operator

lib/Doctrine/DBAL/Cache/ArrayStatement.php

@@ -138,11 +138,8 @@ class ArrayStatement implements \IteratorAggregate, ResultStatement
     public function fetchColumn($columnIndex = 0)
     {
         $row = $this->fetch(PDO::FETCH_NUM);
-        if (!isset($row[$columnIndex])) {
-            // TODO: verify this is correct behavior
-            return false;
-        }
 
-        return $row[$columnIndex];
+        // TODO: verify this is correct behavior
+        return $row[$columnIndex] ?? false;
     }
 }

lib/Doctrine/DBAL/Cache/ResultCacheStatement.php

@@ -195,12 +195,9 @@ class ResultCacheStatement implements \IteratorAggregate, ResultStatement
     public function fetchColumn($columnIndex = 0)
     {
         $row = $this->fetch(PDO::FETCH_NUM);
-        if (!isset($row[$columnIndex])) {
-            // TODO: verify this is correct behavior
-            return false;
-        }
 
-        return $row[$columnIndex];
+        // TODO: verify this is correct behavior
+        return $row[$columnIndex] ?? false;
     }
 
     /**

lib/Doctrine/DBAL/Configuration.php

@@ -109,11 +109,7 @@ class Configuration
      */
     public function getFilterSchemaAssetsExpression()
     {
-        if (isset($this->_attributes['filterSchemaAssetsExpression'])) {
-            return $this->_attributes['filterSchemaAssetsExpression'];
-        }
-
-        return null;
+        return $this->_attributes['filterSchemaAssetsExpression'] ?? null;
     }
 
     /**
@@ -141,10 +137,6 @@ class Configuration
      */
     public function getAutoCommit()
     {
-        if (isset($this->_attributes['autoCommit'])) {
-            return $this->_attributes['autoCommit'];
-        }
-
-        return true;
+        return $this->_attributes['autoCommit'] ?? true;
     }
 }

lib/Doctrine/DBAL/Connection.php

@@ -800,9 +800,7 @@ class Connection implements DriverConnection
         $typeValues = [];
 
         foreach ($columnList as $columnIndex => $columnName) {
-            $typeValues[] = isset($types[$columnName])
-                ? $types[$columnName]
-                : \PDO::PARAM_STR;
+            $typeValues[] = $types[$columnName] ?? \PDO::PARAM_STR;
         }
 
         return $typeValues;

lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php

@@ -201,11 +201,7 @@ abstract class AbstractMySQLDriver implements Driver, ExceptionConverterDriver,
     {
         $params = $conn->getParams();
 
-        if (isset($params['dbname'])) {
-            return $params['dbname'];
-        }
-
-        return $conn->query('SELECT DATABASE()')->fetchColumn();
+        return $params['dbname'] ?? $conn->query('SELECT DATABASE()')->fetchColumn();
     }
 
     /**

lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php

@@ -134,9 +134,7 @@ abstract class AbstractPostgreSQLDriver implements Driver, ExceptionConverterDri
     {
         $params = $conn->getParams();
 
-        return (isset($params['dbname']))
-            ? $params['dbname']
-            : $conn->query('SELECT CURRENT_DATABASE()')->fetchColumn();
+        return $params['dbname'] ?? $conn->query('SELECT CURRENT_DATABASE()')->fetchColumn();
     }
 
     /**

lib/Doctrine/DBAL/Driver/AbstractSQLAnywhereDriver.php

@@ -124,11 +124,7 @@ abstract class AbstractSQLAnywhereDriver implements Driver, ExceptionConverterDr
     {
         $params = $conn->getParams();
 
-        if (isset($params['dbname'])) {
-            return $params['dbname'];
-        }
-
-        return $conn->query('SELECT DB_NAME()')->fetchColumn();
+        return $params['dbname'] ?? $conn->query('SELECT DB_NAME()')->fetchColumn();
     }
 
     /**

lib/Doctrine/DBAL/Driver/AbstractSQLServerDriver.php

@@ -78,11 +78,7 @@ abstract class AbstractSQLServerDriver implements Driver, VersionAwarePlatformDr
     {
         $params = $conn->getParams();
 
-        if (isset($params['dbname'])) {
-            return $params['dbname'];
-        }
-
-        return $conn->query('SELECT DB_NAME()')->fetchColumn();
+        return $params['dbname'] ?? $conn->query('SELECT DB_NAME()')->fetchColumn();
     }
 
     /**

lib/Doctrine/DBAL/Driver/IBMDB2/DB2Statement.php

@@ -284,7 +284,7 @@ class DB2Statement implements \IteratorAggregate, Statement
             return false;
         }
 
-        return isset($row[$columnIndex]) ? $row[$columnIndex] : null;
+        return $row[$columnIndex] ?? null;
     }
 
     /**

lib/Doctrine/DBAL/Driver/Mysqli/MysqliStatement.php

@@ -342,7 +342,7 @@ class MysqliStatement implements \IteratorAggregate, Statement
             return false;
         }
 
-        return isset($row[$columnIndex]) ? $row[$columnIndex] : null;
+        return $row[$columnIndex] ?? null;
     }
 
     /**

lib/Doctrine/DBAL/Driver/SQLAnywhere/SQLAnywhereStatement.php

@@ -214,7 +214,7 @@ class SQLAnywhereStatement implements IteratorAggregate, Statement
                 if (func_num_args() >= 2) {
                     $args      = func_get_args();
                     $className = $args[1];
-                    $ctorArgs  = isset($args[2]) ? $args[2] : [];
+                    $ctorArgs  = $args[2] ?? [];
                 }
 
                 $result = sasql_fetch_object($this->result);
@@ -271,7 +271,7 @@ class SQLAnywhereStatement implements IteratorAggregate, Statement
             return false;
         }
 
-        return isset($row[$columnIndex]) ? $row[$columnIndex] : null;
+        return $row[$columnIndex] ?? null;
     }
 
     /**

lib/Doctrine/DBAL/Driver/SQLSrv/SQLSrvStatement.php

@@ -325,7 +325,7 @@ class SQLSrvStatement implements IteratorAggregate, Statement
 
             if (count($args) >= 2) {
                 $className = $args[1];
-                $ctorArgs  = isset($args[2]) ? $args[2] : [];
+                $ctorArgs  = $args[2] ?? [];
             }
 
             return sqlsrv_fetch_object($this->stmt, $className, $ctorArgs) ?: false;
@@ -372,7 +372,7 @@ class SQLSrvStatement implements IteratorAggregate, Statement
             return false;
         }
 
-        return isset($row[$columnIndex]) ? $row[$columnIndex] : null;
+        return $row[$columnIndex] ?? null;
     }
 
     /**

lib/Doctrine/DBAL/DriverManager.php

@@ -152,11 +152,8 @@ final class DriverManager
         } else {
             self::_checkParams($params);
         }
-        if (isset($params['driverClass'])) {
-            $className = $params['driverClass'];
-        } else {
-            $className = self::$_driverMap[$params['driver']];
-        }
+
+        $className = $params['driverClass'] ?? $className = self::$_driverMap[$params['driver']];
 
         $driver = new $className();
 
@@ -398,11 +395,9 @@ final class DriverManager
 
             // The requested driver from the URL scheme takes precedence
             // over the default driver from the connection parameters (if any).
-            $params['driver'] = isset(self::$driverSchemeAliases[$driver])
-                // use alias like "postgres", else we just let checkParams decide later
-                // if the driver exists (for literal "pdo-pgsql" etc)
-                ? self::$driverSchemeAliases[$driver]
-                : $driver;
+            $params['driver'] = self::$driverSchemeAliases[$driver] ?? $driver;
+            // use alias like "postgres", else we just let checkParams decide later
+            // if the driver exists (for literal "pdo-pgsql" etc)
 
             return $params;
         }

lib/Doctrine/DBAL/Platforms/AbstractPlatform.php

@@ -263,7 +263,7 @@ abstract class AbstractPlatform
             $field['length'] = $this->getVarcharDefaultLength();
         }
 
-        $fixed = (isset($field['fixed'])) ? $field['fixed'] : false;
+        $fixed = $field['fixed'] ?? false;
 
         if ($field['length'] > $this->getVarcharMaxLength()) {
             return $this->getClobTypeDeclarationSQL($field);
@@ -285,7 +285,7 @@ abstract class AbstractPlatform
             $field['length'] = $this->getBinaryDefaultLength();
         }
 
-        $fixed = isset($field['fixed']) ? $field['fixed'] : false;
+        $fixed = $field['fixed'] ?? false;
 
         if ($field['length'] > $this->getBinaryMaxLength()) {
             return $this->getBlobTypeDeclarationSQL($field);

lib/Doctrine/DBAL/Platforms/OraclePlatform.php

@@ -386,7 +386,7 @@ class OraclePlatform extends AbstractPlatform
      */
     protected function _getCreateTableSQL($table, array $columns, array $options = [])
     {
-        $indexes = isset($options['indexes']) ? $options['indexes'] : [];
+        $indexes = $options['indexes'] ?? [];
         $options['indexes'] = [];
         $sql = parent::_getCreateTableSQL($table, $columns, $options);
 

lib/Doctrine/DBAL/Schema/AbstractSchemaManager.php

@@ -862,7 +862,7 @@ abstract class AbstractSchemaManager
                     'columns' => [$tableIndex['column_name']],
                     'unique' => $tableIndex['non_unique'] ? false : true,
                     'primary' => $tableIndex['primary'],
-                    'flags' => isset($tableIndex['flags']) ? $tableIndex['flags'] : [],
+                    'flags' => $tableIndex['flags'] ?? [],
                     'options' => isset($tableIndex['where']) ? ['where' => $tableIndex['where']] : [],
                 ];
             } else {

lib/Doctrine/DBAL/Schema/MySqlSchemaManager.php

@@ -109,11 +109,7 @@ class MySqlSchemaManager extends AbstractSchemaManager
 
         $dbType = strtolower($tableColumn['type']);
         $dbType = strtok($dbType, '(), ');
-        if (isset($tableColumn['length'])) {
-            $length = $tableColumn['length'];
-        } else {
-            $length = strtok('(), ');
-        }
+        $length = $tableColumn['length'] ?? strtok('(), ');
 
         $fixed = null;
 

lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php

@@ -327,7 +327,7 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
             $tableColumn['default'] = null;
         }
 
-        $length = (isset($tableColumn['length'])) ? $tableColumn['length'] : null;
+        $length = $tableColumn['length'] ?? null;
         if ($length == '-1' && isset($tableColumn['atttypmod'])) {
             $length = $tableColumn['atttypmod'] - 4;
         }

lib/Doctrine/DBAL/Schema/SqliteSchemaManager.php

@@ -253,7 +253,7 @@ class SqliteSchemaManager extends AbstractSchemaManager
 
         // inspect column collation and comments
         $createSql = $this->_conn->fetchAll("SELECT sql FROM (SELECT * FROM sqlite_master UNION ALL SELECT * FROM sqlite_temp_master) WHERE type = 'table' AND name = '$table'");
-        $createSql = isset($createSql[0]['sql']) ? $createSql[0]['sql'] : '';
+        $createSql = $createSql[0]['sql'] ?? '';
 
         foreach ($list as $columnName => $column) {
             $type = $column->getType();
@@ -293,7 +293,7 @@ class SqliteSchemaManager extends AbstractSchemaManager
         }
 
         $dbType = strtolower($tableColumn['type']);
-        $length = isset($tableColumn['length']) ? $tableColumn['length'] : null;
+        $length = $tableColumn['length'] ?? null;
         $unsigned = false;
 
         if (strpos($dbType, ' unsigned') !== false) {

lib/Doctrine/DBAL/Sharding/SQLAzure/SQLAzureShardManager.php

@@ -86,7 +86,7 @@ class SQLAzureShardManager implements ShardManager
         $this->federationName = $params['sharding']['federationName'];
         $this->distributionKey = $params['sharding']['distributionKey'];
         $this->distributionType = $params['sharding']['distributionType'];
-        $this->filteringEnabled = (isset($params['sharding']['filteringEnabled'])) ? (bool) $params['sharding']['filteringEnabled'] : false;
+        $this->filteringEnabled = (bool) ($params['sharding']['filteringEnabled'] ?? false);
     }
 
     /**

tests/Doctrine/Tests/DBAL/Functional/Schema/SchemaManagerFunctionalTestCase.php

@@ -873,10 +873,7 @@ class SchemaManagerFunctionalTestCase extends \Doctrine\Tests\DbalFunctionalTest
      */
     protected function createTestTable($name = 'test_table', $data = array())
     {
-        $options = array();
-        if (isset($data['options'])) {
-            $options = $data['options'];
-        }
+        $options = $data['options'] ?? array();
 
         $table = $this->getTestTable($name, $options);