Add PHPStan 0.10, apply level 3

.gitignore

@@ -7,3 +7,4 @@ vendor/
 *.phpunit.xml
 /phpunit.xml
 /.phpcs-cache
+/phpstan.neon

.travis.yml

@@ -414,6 +414,11 @@ jobs:
         - composer config minimum-stability dev
         - travis_retry composer update --prefer-dist
 
+    - stage: Code Quality
+      env: DB=none STATIC_ANALYSIS
+      install: travis_retry composer update --prefer-dist
+      script: vendor/bin/phpstan analyse
+
     - stage: Pull request coding standard
       if: type = pull_request
       php: 7.1

composer.json

@@ -19,6 +19,8 @@
     },
     "require-dev": {
         "doctrine/coding-standard": "^4.0",
+        "jetbrains/phpstorm-stubs": "^2018.1.2",
+        "phpstan/phpstan": "^0.10",
         "phpunit/phpunit": "^7.1.2",
         "phpunit/phpunit-mock-objects": "!=3.2.4,!=3.2.5",
         "symfony/console": "^2.0.5||^3.0",

lib/Doctrine/DBAL/Connection.php

@@ -19,12 +19,14 @@
 
 namespace Doctrine\DBAL;
 
+use Doctrine\DBAL\Driver\ResultStatement;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Exception\InvalidArgumentException;
 use Closure;
 use Exception;
 use Doctrine\DBAL\Types\Type;
 use Doctrine\DBAL\Driver\Connection as DriverConnection;
+use Doctrine\DBAL\Driver\Statement as DriverStatement;
 use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Cache\ResultCacheStatement;
 use Doctrine\DBAL\Cache\QueryCacheProfile;
@@ -32,6 +34,7 @@ use Doctrine\DBAL\Cache\ArrayStatement;
 use Doctrine\DBAL\Cache\CacheException;
 use Doctrine\DBAL\Driver\PingableConnection;
 use Throwable;
+use function assert;
 use function array_key_exists;
 use function array_merge;
 use function func_get_args;
@@ -108,7 +111,7 @@ class Connection implements DriverConnection
     /**
      * The wrapped driver connection.
      *
-     * @var \Doctrine\DBAL\Driver\Connection
+     * @var \Doctrine\DBAL\Driver\Connection|null
      */
     protected $_conn;
 
@@ -409,7 +412,9 @@ class Connection implements DriverConnection
     {
         $version = $this->getDatabasePlatformVersion();
 
-        if (null !== $version) {
+        if ($version !== null) {
+            assert($this->_driver instanceof VersionAwarePlatformDriver);
+
             $this->platform = $this->_driver->createDatabasePlatformForVersion($version);
         } else {
             $this->platform = $this->_driver->getDatabasePlatform();
@@ -875,7 +880,7 @@ class Connection implements DriverConnection
      *
      * @param string $statement The SQL statement to prepare.
      *
-     * @return \Doctrine\DBAL\Statement The prepared statement.
+     * @return DriverStatement The prepared statement.
      *
      * @throws \Doctrine\DBAL\DBALException
      */
@@ -903,7 +908,7 @@ class Connection implements DriverConnection
      * @param array                                       $types  The types the previous parameters are in.
      * @param \Doctrine\DBAL\Cache\QueryCacheProfile|null $qcp    The query cache profile, optional.
      *
-     * @return \Doctrine\DBAL\Driver\Statement The executed statement.
+     * @return ResultStatement The executed statement.
      *
      * @throws \Doctrine\DBAL\DBALException
      */
@@ -955,7 +960,7 @@ class Connection implements DriverConnection
      * @param array                                  $types  The types the previous parameters are in.
      * @param \Doctrine\DBAL\Cache\QueryCacheProfile $qcp    The query cache profile.
      *
-     * @return \Doctrine\DBAL\Driver\ResultStatement
+     * @return ResultStatement
      *
      * @throws \Doctrine\DBAL\Cache\CacheException
      */
@@ -1139,7 +1144,7 @@ class Connection implements DriverConnection
     /**
      * Fetches the SQLSTATE associated with the last database operation.
      *
-     * @return int The last error code.
+     * @return string|null The last error code.
      */
     public function errorCode()
     {

lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php

@@ -21,6 +21,7 @@ namespace Doctrine\DBAL\Connections;
 
 use Doctrine\DBAL\Connection;
 use Doctrine\DBAL\Driver;
+use Doctrine\DBAL\Driver\Connection as DriverConnection;
 use Doctrine\DBAL\Configuration;
 use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Event\ConnectionEventArgs;
@@ -88,7 +89,7 @@ class MasterSlaveConnection extends Connection
     /**
      * Master and slave connection (one of the randomly picked slaves).
      *
-     * @var \Doctrine\DBAL\Driver\Connection[]
+     * @var DriverConnection[]|null[]
      */
     protected $connections = ['master' => null, 'slave' => null];
 
@@ -199,7 +200,7 @@ class MasterSlaveConnection extends Connection
      *
      * @param string $connectionName
      *
-     * @return \Doctrine\DBAL\Driver
+     * @return DriverConnection
      */
     protected function connectTo($connectionName)
     {

lib/Doctrine/DBAL/Driver/Connection.php

@@ -36,7 +36,7 @@ interface Connection
      *
      * @param string $prepareString
      *
-     * @return \Doctrine\DBAL\Driver\Statement
+     * @return Statement
      */
     public function prepare($prepareString);
 

lib/Doctrine/DBAL/Driver/IBMDB2/DB2Connection.php

@@ -22,6 +22,7 @@ namespace Doctrine\DBAL\Driver\IBMDB2;
 use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\ParameterType;
+use stdClass;
 use const DB2_AUTOCOMMIT_OFF;
 use const DB2_AUTOCOMMIT_ON;
 use function db2_autocommit;
@@ -74,6 +75,7 @@ class DB2Connection implements Connection, ServerInfoAwareConnection
      */
     public function getServerVersion()
     {
+        /** @var stdClass $serverInfo */
         $serverInfo = db2_server_info($this->_conn);
 
         return $serverInfo->DBMS_VER;

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

@@ -66,7 +66,7 @@ class DB2Statement implements \IteratorAggregate, Statement
     private $defaultFetchClass = '\stdClass';
 
     /**
-     * @var string Constructor arguments for the default class to instantiate when fetching class instances.
+     * @var mixed[] Constructor arguments for the default class to instantiate when fetching class instances.
      */
     private $defaultFetchClassCtorArgs = [];
 

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

@@ -252,7 +252,7 @@ class MysqliStatement implements \IteratorAggregate, Statement
     }
 
     /**
-     * @return bool|array
+     * @return mixed[]|false
      */
     private function _fetch()
     {

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

@@ -22,10 +22,12 @@ namespace Doctrine\DBAL\Driver\SQLAnywhere;
 use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\ParameterType;
+use function assert;
 use function func_get_args;
 use function is_float;
 use function is_int;
 use function is_resource;
+use function is_string;
 use function sasql_affected_rows;
 use function sasql_commit;
 use function sasql_connect;
@@ -149,7 +151,11 @@ class SQLAnywhereConnection implements Connection, ServerInfoAwareConnection
      */
     public function getServerVersion()
     {
-        return $this->query("SELECT PROPERTY('ProductVersion')")->fetchColumn();
+        $version = $this->query("SELECT PROPERTY('ProductVersion')")->fetchColumn();
+
+        assert(is_string($version));
+
+        return $version;
     }
 
     /**

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

@@ -70,7 +70,7 @@ class SQLAnywhereStatement implements IteratorAggregate, Statement
     private $defaultFetchClass = '\stdClass';
 
     /**
-     * @var string Constructor arguments for the default class to instantiate when fetching class instances.
+     * @var mixed[] Constructor arguments for the default class to instantiate when fetching class instances.
      */
     private $defaultFetchClassCtorArgs = [];
 

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

@@ -75,7 +75,7 @@ class SQLSrvStatement implements IteratorAggregate, Statement
     /**
      * The SQLSRV statement resource.
      *
-     * @var resource
+     * @var resource|null
      */
     private $stmt;
 
@@ -114,7 +114,7 @@ class SQLSrvStatement implements IteratorAggregate, Statement
     /**
      * The constructor arguments for the default class to instantiate when fetching class instances.
      *
-     * @var string
+     * @var mixed[]
      */
     private $defaultFetchClassCtorArgs = [];
 

lib/Doctrine/DBAL/Driver/Statement.php

@@ -85,7 +85,7 @@ interface Statement extends ResultStatement
      *
      * @see Doctrine_Adapter_Interface::errorCode()
      *
-     * @return string The error code string.
+     * @return string|int|bool The error code string.
      */
     public function errorCode();
 

lib/Doctrine/DBAL/Platforms/OraclePlatform.php

@@ -402,7 +402,7 @@ class OraclePlatform extends AbstractPlatform
 
         foreach ($columns as $name => $column) {
             if (isset($column['sequence'])) {
-                $sql[] = $this->getCreateSequenceSQL($column['sequence'], 1);
+                $sql[] = $this->getCreateSequenceSQL($column['sequence']);
             }
 
             if (isset($column['autoincrement']) && $column['autoincrement'] ||

lib/Doctrine/DBAL/Platforms/SQLServerPlatform.php

@@ -1306,7 +1306,7 @@ class SQLServerPlatform extends AbstractPlatform
      * Remove ORDER BY clauses in subqueries - they're not supported by SQL Server.
      * Caveat: will leave ORDER BY in TOP N subqueries.
      *
-     * @param $query
+     * @param string $query
      * @return string
      */
     private function scrubInnerOrderBy($query)

lib/Doctrine/DBAL/Platforms/SqlitePlatform.php

@@ -934,7 +934,7 @@ class SqlitePlatform extends AbstractPlatform
     /**
      * @param \Doctrine\DBAL\Schema\TableDiff $diff
      *
-     * @return array|bool
+     * @return string[]|false
      */
     private function getSimpleAlterTableSQL(TableDiff $diff)
     {

lib/Doctrine/DBAL/Schema/Comparator.php

@@ -204,7 +204,7 @@ class Comparator
      * @param \Doctrine\DBAL\Schema\Table $table1
      * @param \Doctrine\DBAL\Schema\Table $table2
      *
-     * @return bool|\Doctrine\DBAL\Schema\TableDiff
+     * @return TableDiff|false
      */
     public function diffTable(Table $table1, Table $table2)
     {
@@ -312,8 +312,6 @@ class Comparator
      * Try to find columns that only changed their name, rename operations maybe cheaper than add/drop
      * however ambiguities between different possibilities should not lead to renaming at all.
      *
-     * @param \Doctrine\DBAL\Schema\TableDiff $tableDifferences
-     *
      * @return void
      */
     private function detectColumnRenamings(TableDiff $tableDifferences)
@@ -348,8 +346,6 @@ class Comparator
      * Try to find indexes that only changed their name, rename operations maybe cheaper than add/drop
      * however ambiguities between different possibilities should not lead to renaming at all.
      *
-     * @param \Doctrine\DBAL\Schema\TableDiff $tableDifferences
-     *
      * @return void
      */
     private function detectIndexRenamings(TableDiff $tableDifferences)

lib/Doctrine/DBAL/Schema/OracleSchemaManager.php

@@ -21,10 +21,12 @@ namespace Doctrine\DBAL\Schema;
 
 use Doctrine\DBAL\DBALException;
 use Doctrine\DBAL\Driver\DriverException;
+use Doctrine\DBAL\Platforms\OraclePlatform;
 use Doctrine\DBAL\Types\Type;
 use const CASE_LOWER;
 use function array_change_key_case;
 use function array_values;
+use function assert;
 use function is_null;
 use function preg_match;
 use function sprintf;
@@ -116,6 +118,7 @@ class OracleSchemaManager extends AbstractSchemaManager
             $tableIndex = \array_change_key_case($tableIndex, CASE_LOWER);
 
             $keyName = strtolower($tableIndex['name']);
+            $buffer  = [];
 
             if (strtolower($tableIndex['is_primary']) == "p") {
                 $keyName = 'primary';
@@ -346,8 +349,6 @@ class OracleSchemaManager extends AbstractSchemaManager
 
         $query = 'GRANT DBA TO ' . $username;
         $this->_conn->executeUpdate($query);
-
-        return true;
     }
 
     /**
@@ -357,6 +358,8 @@ class OracleSchemaManager extends AbstractSchemaManager
      */
     public function dropAutoincrement($table)
     {
+        assert($this->_platform instanceof OraclePlatform);
+
         $sql = $this->_platform->getDropAutoincrementSql($table);
         foreach ($sql as $query) {
             $this->_conn->executeUpdate($query);

lib/Doctrine/DBAL/Schema/PostgreSqlSchemaManager.php

@@ -20,6 +20,7 @@
 namespace Doctrine\DBAL\Schema;
 
 use Doctrine\DBAL\Exception\DriverException;
+use Doctrine\DBAL\Platforms\PostgreSqlPlatform;
 use Doctrine\DBAL\Types\Type;
 use const CASE_LOWER;
 use function array_change_key_case;
@@ -27,6 +28,7 @@ use function array_filter;
 use function array_keys;
 use function array_map;
 use function array_shift;
+use function assert;
 use function explode;
 use function in_array;
 use function join;
@@ -134,6 +136,8 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
                 throw $exception;
             }
 
+            assert($this->_platform instanceof PostgreSqlPlatform);
+
             $this->_execSql(
                 [
                     $this->_platform->getDisallowDatabaseConnectionsSQL($database),
@@ -150,8 +154,11 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
      */
     protected function _getPortableTableForeignKeyDefinition($tableForeignKey)
     {
-        $onUpdate = null;
-        $onDelete = null;
+        $onUpdate       = null;
+        $onDelete       = null;
+        $localColumns   = null;
+        $foreignColumns = null;
+        $foreignTable   = null;
 
         if (preg_match('(ON UPDATE ([a-zA-Z0-9]+( (NULL|ACTION|DEFAULT))?))', $tableForeignKey['condef'], $match)) {
             $onUpdate = $match[1];
@@ -307,7 +314,9 @@ class PostgreSqlSchemaManager extends AbstractSchemaManager
         }
 
         if ( ! isset($sequence['increment_by'], $sequence['min_value'])) {
+            /** @var string[] $data */
             $data      = $this->_conn->fetchAssoc('SELECT min_value, increment_by FROM ' . $this->_platform->quoteIdentifier($sequenceName));
+
             $sequence += $data;
         }
 

lib/Doctrine/DBAL/Schema/SQLAnywhereSchemaManager.php

@@ -19,7 +19,9 @@
 
 namespace Doctrine\DBAL\Schema;
 
+use Doctrine\DBAL\Platforms\SQLAnywherePlatform;
 use Doctrine\DBAL\Types\Type;
+use function assert;
 use function preg_replace;
 
 /**
@@ -68,6 +70,7 @@ class SQLAnywhereSchemaManager extends AbstractSchemaManager
      */
     public function startDatabase($database)
     {
+        assert($this->_platform instanceof SQLAnywherePlatform);
         $this->_execSql($this->_platform->getStartDatabaseSQL($database));
     }
 
@@ -78,6 +81,7 @@ class SQLAnywhereSchemaManager extends AbstractSchemaManager
      */
     public function stopDatabase($database)
     {
+        assert($this->_platform instanceof SQLAnywherePlatform);
         $this->_execSql($this->_platform->getStopDatabaseSQL($database));
     }
 

lib/Doctrine/DBAL/Schema/Schema.php

@@ -76,7 +76,7 @@ class Schema extends AbstractAsset
     protected $_sequences = [];
 
     /**
-     * @var \Doctrine\DBAL\Schema\SchemaConfig
+     * @var SchemaConfig
      */
     protected $_schemaConfig = false;
 

lib/Doctrine/DBAL/Schema/Table.php

@@ -77,7 +77,7 @@ class Table extends AbstractAsset
     protected $_options = [];
 
     /**
-     * @var SchemaConfig
+     * @var SchemaConfig|null
      */
     protected $_schemaConfig = null;
 

lib/Doctrine/DBAL/Schema/TableDiff.php

@@ -99,7 +99,7 @@ class TableDiff
     /**
      * All added foreign key definitions
      *
-     * @var \Doctrine\DBAL\Schema\ForeignKeyConstraint[]
+     * @var ForeignKeyConstraint[]
      */
     public $addedForeignKeys = [];
 
@@ -113,7 +113,7 @@ class TableDiff
     /**
      * All removed foreign keys
      *
-     * @var \Doctrine\DBAL\Schema\ForeignKeyConstraint[]
+     * @var ForeignKeyConstraint[]|string[]
      */
     public $removedForeignKeys = [];
 
@@ -161,7 +161,7 @@ class TableDiff
     }
 
     /**
-     * @return \Doctrine\DBAL\Schema\Identifier|boolean
+     * @return Identifier|string|bool
      */
     public function getNewName()
     {

lib/Doctrine/DBAL/Sharding/PoolingShardConnection.php

@@ -22,6 +22,7 @@ namespace Doctrine\DBAL\Sharding;
 use Doctrine\Common\EventManager;
 use Doctrine\DBAL\Configuration;
 use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Driver\Connection as DriverConnection;
 use Doctrine\DBAL\Driver;
 use Doctrine\DBAL\Event\ConnectionEventArgs;
 use Doctrine\DBAL\Events;
@@ -68,19 +69,19 @@ use function is_string;
 class PoolingShardConnection extends Connection
 {
     /**
-     * @var array
+     * @var DriverConnection[]
      */
-    private $activeConnections;
+    private $activeConnections = [];
 
     /**
-     * @var int
+     * @var int|null
      */
     private $activeShardId;
 
     /**
-     * @var array
+     * @var mixed[]
      */
-    private $connections;
+    private $connectionParameters = [];
 
     /**
      * @param array                         $params
@@ -108,7 +109,7 @@ class PoolingShardConnection extends Connection
             throw new \InvalidArgumentException("The 'shardChoser' configuration is not a valid instance of Doctrine\DBAL\Sharding\ShardChoser\ShardChoser");
         }
 
-        $this->connections[0] = array_merge($params, $params['global']);
+        $this->connectionParameters[0] = array_merge($params, $params['global']);
 
         foreach ($params['shards'] as $shard) {
             if ( ! isset($shard['id'])) {
@@ -119,11 +120,11 @@ class PoolingShardConnection extends Connection
                 throw new \InvalidArgumentException("Shard Id has to be a non-negative number.");
             }
 
-            if (isset($this->connections[$shard['id']])) {
+            if (isset($this->connectionParameters[$shard['id']])) {
                 throw new \InvalidArgumentException("Shard " . $shard['id'] . " is duplicated in the configuration.");
             }
 
-            $this->connections[$shard['id']] = array_merge($params, $shard);
+            $this->connectionParameters[$shard['id']] = array_merge($params, $shard);
         }
 
         parent::__construct($params, $driver, $config, $eventManager);
@@ -144,7 +145,7 @@ class PoolingShardConnection extends Connection
      */
     public function getParams()
     {
-        return $this->activeShardId ? $this->connections[$this->activeShardId] : $this->connections[0];
+        return $this->activeShardId ? $this->connectionParameters[$this->activeShardId] : $this->connectionParameters[0];
     }
 
     /**
@@ -241,7 +242,7 @@ class PoolingShardConnection extends Connection
 
         $driverOptions = $params['driverOptions'] ?? [];
 
-        $connectionParams = $this->connections[$shardId];
+        $connectionParams = $this->connectionParameters[$shardId];
 
         $user = $connectionParams['user'] ?? null;
         $password = $connectionParams['password'] ?? null;
@@ -269,7 +270,7 @@ class PoolingShardConnection extends Connection
     public function close()
     {
         $this->_conn             = null;
-        $this->activeConnections = null;
+        $this->activeConnections = [];
         $this->activeShardId     = null;
     }
 }

lib/Doctrine/DBAL/Sharding/ShardChoser/ShardChoser.php

@@ -32,10 +32,10 @@ interface ShardChoser
     /**
      * Picks a shard for the given distribution value.
      *
-     * @param string                                         $distributionValue
+     * @param string|int                                     $distributionValue
      * @param \Doctrine\DBAL\Sharding\PoolingShardConnection $conn
      *
-     * @return int
+     * @return string|int
      */
     function pickShard($distributionValue, PoolingShardConnection $conn);
 }

lib/Doctrine/DBAL/Statement.php

@@ -211,7 +211,7 @@ class Statement implements \IteratorAggregate, DriverStatement
     /**
      * Fetches the SQLSTATE associated with the last operation on the statement.
      *
-     * @return string
+     * @return string|int|bool
      */
     public function errorCode()
     {

lib/Doctrine/DBAL/Tools/Console/Command/ImportCommand.php

@@ -19,11 +19,13 @@
 
 namespace Doctrine\DBAL\Tools\Console\Command;
 
+use Doctrine\DBAL\Driver\PDOStatement;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use const PHP_EOL;
+use function assert;
 use function file_exists;
 use function file_get_contents;
 use function is_readable;
@@ -97,6 +99,8 @@ EOT
                         $lines = 0;
 
                         $stmt = $conn->prepare($sql);
+                        assert($stmt instanceof PDOStatement);
+
                         $stmt->execute();
 
                         do {

phpstan.neon.dist

+parameters:
+    level: 3
+    paths:
+        - %currentWorkingDirectory%/lib
+    autoload_files:
+        - %currentWorkingDirectory%/tests/phpstan-polyfill.php
+    reportUnmatchedIgnoredErrors: false
+    ignoreErrors:
+        # extension not available
+        - '~^(Used )?(Function|Constant) sasql_\S+ not found\.\z~i'
+
+        # removing it would be BC break
+        - '~^Constructor of class Doctrine\\DBAL\\Schema\\Table has an unused parameter \$idGeneratorType\.\z~'
+
+        # changing these would be a BC break, to be done in next major
+        - '~^Method Doctrine\\DBAL\\Driver\\IBMDB2\\DB2Connection::exec\(\) should return int but returns bool\.\z~'
+        - '~^Method Doctrine\\DBAL\\Query\\QueryBuilder::execute\(\) should return Doctrine\\DBAL\\Driver\\Statement\|int but returns Doctrine\\DBAL\\Driver\\ResultStatement\.\z~'
+        - '~^Property Doctrine\\DBAL\\Schema\\Table::\$_primaryKeyName \(string\) does not accept (default value of type )?false\.\z~'
+        - '~^Property Doctrine\\DBAL\\Schema\\Schema::\$_schemaConfig \(Doctrine\\DBAL\\Schema\\SchemaConfig\) does not accept default value of type false\.\z~'
+        - '~^Method Doctrine\\DBAL\\Schema\\ForeignKeyConstraint::onEvent\(\) should return string\|null but returns false\.\z~'
+        - '~^Method Doctrine\\DBAL\\Schema\\(Oracle|PostgreSql|SQLServer)SchemaManager::_getPortableTableDefinition\(\) should return array but returns string\.\z~'
+        - '~^Method Doctrine\\DBAL\\Platforms\\(|SQLAnywhere|Sqlite)Platform::_getTransactionIsolationLevelSQL\(\) should return string but returns int\.\z~'
+        - '~^Method Doctrine\\DBAL\\Driver\\OCI8\\OCI8Connection::lastInsertId\(\) should return string but returns (int|false)\.\z~'
+        - '~^Method Doctrine\\DBAL\\Driver\\SQLSrv\\SQLSrvConnection::errorCode\(\) should return string\|null but returns false\.\z~'
+
+        # actually OCI-Lob - not even a valid class name...
+        - '~^Call to an undefined method object::writeTemporary\(\)\.\z~'
+
+        # http://php.net/manual/en/pdo.sqlitecreatefunction.php
+        - '~^Call to an undefined method Doctrine\\DBAL\\Driver\\PDOConnection::sqliteCreateFunction\(\)\.\z~'
+
+        # legacy variadic-like signature
+        - '~^Method Doctrine\\DBAL\\Driver\\Connection::query\(\) invoked with \d+ parameters?, 0 required\.\z~'
+
+        # some drivers actually do accept 2nd parameter...
+        - '~^Method Doctrine\\DBAL\\Platforms\\AbstractPlatform::getListTableForeignKeysSQL\(\) invoked with \d+ parameters, 1 required\.\z~'
+
+        # legacy remnants from doctrine/common
+        - '~^Class Doctrine\\Common\\(Collections\\Collection|Persistence\\Proxy) not found\.\z~'
+        - '~^.+ on an unknown class Doctrine\\Common\\(Collections\\Collection|Persistence\\Proxy)\.\z~'
+
+        # inheritance variance inference issue
+        - '~^Method Doctrine\\DBAL\\Driver\\PDOConnection::\w+\(\) should return Doctrine\\DBAL\\Driver\\Statement but returns PDOStatement\.\z~'
+
+        # may not exist when pdo_sqlsrv is not loaded
+        - '~^Access to undefined constant PDO::SQLSRV_ENCODING_BINARY\.\z~'

tests/phpstan-polyfill.php

+<?php
+
+declare(strict_types=1);
+
+(function () : void {
+    foreach (['ibm_db2', 'mysqli', 'oci8', 'sqlsrv', 'pgsql'] as $extension) {
+        if (extension_loaded($extension)) {
+            continue;
+        }
+
+        require sprintf(__DIR__ . '/../vendor/jetbrains/phpstorm-stubs/%1$s/%1$s.php', $extension);
+    }
+})();