use newer PHP syntax

lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php

@@ -108,8 +108,8 @@ abstract class AbstractPostgreSQLDriver implements Driver, ExceptionConverterDri
         }
 
         $majorVersion = $versionParts['major'];
-        $minorVersion = isset($versionParts['minor']) ? $versionParts['minor'] : 0;
-        $patchVersion = isset($versionParts['patch']) ? $versionParts['patch'] : 0;
+        $minorVersion = $versionParts['minor'] ?? 0;
+        $patchVersion = $versionParts['patch'] ?? 0;
         $version      = $majorVersion . '.' . $minorVersion . '.' . $patchVersion;
 
         switch(true) {

lib/Doctrine/DBAL/Query/QueryBuilder.php

@@ -325,7 +325,7 @@ class QueryBuilder
      */
     public function getParameter($key)
     {
-        return isset($this->params[$key]) ? $this->params[$key] : null;
+        return $this->params[$key] ?? null;
     }
 
     /**
@@ -347,7 +347,7 @@ class QueryBuilder
      */
     public function getParameterType($key)
     {
-        return isset($this->paramTypes[$key]) ? $this->paramTypes[$key] : null;
+        return $this->paramTypes[$key] ?? null;
     }
 
     /**

lib/Doctrine/DBAL/Sharding/PoolingShardConnection.php

@@ -151,7 +151,7 @@ class PoolingShardConnection extends Connection
     {
         $params = $this->getParams();
 
-        return isset($params['host']) ? $params['host'] : parent::getHost();
+        return $params['host'] ?? parent::getHost();
     }
 
     /**
@@ -161,7 +161,7 @@ class PoolingShardConnection extends Connection
     {
         $params = $this->getParams();
 
-        return isset($params['port']) ? $params['port'] : parent::getPort();
+        return $params['port'] ?? parent::getPort();
     }
 
     /**
@@ -171,7 +171,7 @@ class PoolingShardConnection extends Connection
     {
         $params = $this->getParams();
 
-        return isset($params['user']) ? $params['user'] : parent::getUsername();
+        return $params['user'] ?? parent::getUsername();
     }
 
     /**
@@ -181,7 +181,7 @@ class PoolingShardConnection extends Connection
     {
         $params = $this->getParams();
 
-        return isset($params['password']) ? $params['password'] : parent::getPassword();
+        return $params['password'] ?? parent::getPassword();
     }
 
     /**

tests/Doctrine/Tests/DBAL/Functional/Driver/AbstractDriverTest.php

@@ -29,8 +29,8 @@ abstract class AbstractDriverTest extends DbalFunctionalTestCase
         $params = $this->_conn->getParams();
         unset($params['dbname']);
 
-        $user = isset($params['user']) ? $params['user'] : null;
-        $password = isset($params['password']) ? $params['password'] : null;
+        $user = $params['user'] ?? null;
+        $password = $params['password'] ?? null;
 
         $connection = $this->driver->connect($params, $user, $password);
 

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

@@ -66,8 +66,8 @@ class SchemaManagerFunctionalTestCase extends \Doctrine\Tests\DbalFunctionalTest
             $params['dbname'] = 'test_drop_database';
         }
 
-        $user = isset($params['user']) ? $params['user'] : null;
-        $password = isset($params['password']) ? $params['password'] : null;
+        $user = $params['user'] ?? null;
+        $password = $params['password'] ?? null;
 
         $connection = $this->_conn->getDriver()->connect($params, $user, $password);
 

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

@@ -39,8 +39,8 @@ class SqliteSchemaManagerTest extends SchemaManagerFunctionalTestCase
         $params = $this->_conn->getParams();
         $params['dbname'] = 'test_drop_database';
 
-        $user = isset($params['user']) ? $params['user'] : null;
-        $password = isset($params['password']) ? $params['password'] : null;
+        $user = $params['user'] ?? null;
+        $password = $params['password'] ?? null;
 
         $connection = $this->_conn->getDriver()->connect($params, $user, $password);