docs: fix @phpstan-return

Author: kenjis

phpstan-baseline.php

@@ -1451,11 +1451,6 @@
 	'count' => 1,
 	'path' => __DIR__ . '/system/Database/Postgre/Forge.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Return type \\(array\\|bool\\|string\\) of method CodeIgniter\\\\Database\\\\Postgre\\\\Forge\\:\\:_alterTable\\(\\) should be covariant with return type \\(array\\<string\\>\\|string\\|false\\) of method CodeIgniter\\\\Database\\\\Forge\\:\\:_alterTable\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Database/Postgre/Forge.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Construct empty\\(\\) is not allowed\\. Use more strict comparison\\.$#',
 	'count' => 1,
@@ -1656,11 +1651,6 @@
 	'count' => 1,
 	'path' => __DIR__ . '/system/Database/SQLite3/Forge.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Return type \\(array\\|string\\|null\\) of method CodeIgniter\\\\Database\\\\SQLite3\\\\Forge\\:\\:_alterTable\\(\\) should be covariant with return type \\(array\\<string\\>\\|string\\|false\\) of method CodeIgniter\\\\Database\\\\Forge\\:\\:_alterTable\\(\\)$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Database/SQLite3/Forge.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Return type \\(SQLite3Result\\|false\\) of method CodeIgniter\\\\Database\\\\SQLite3\\\\PreparedQuery\\:\\:_getResult\\(\\) should be covariant with return type \\(object\\|resource\\|null\\) of method CodeIgniter\\\\Database\\\\BasePreparedQuery\\<SQLite3,SQLite3Stmt,SQLite3Result\\>\\:\\:_getResult\\(\\)$#',
 	'count' => 1,

system/Database/Forge.php

@@ -822,8 +822,8 @@ public function modifyColumn(string $table, $field): bool
      * @param array|string          $processedFields Processed column definitions
      *                                               or column names to DROP
      *
-     * @return list<string>|string SQL string
-     * @phpstan-return ($alterType is 'DROP' ? string : list<string>)
+     * @return false|list<string>|string|null SQL string
+     * @phpstan-return ($alterType is 'DROP' ? string : list<string>|false|null)
      */
     protected function _alterTable(string $alterType, string $table, $processedFields)
     {

system/Database/SQLSRV/Forge.php

@@ -129,8 +129,8 @@ protected function _createTableAttributes(array $attributes): string
      * @param array|string $processedFields Processed column definitions
      *                                      or column names to DROP
      *
-     * @return list<string>|string SQL string
-     * @phpstan-return ($alterType is 'DROP' ? string : list<string>)
+     * @return false|list<string>|string SQL string or false
+     * @phpstan-return ($alterType is 'DROP' ? string : list<string>|false)
      */
     protected function _alterTable(string $alterType, string $table, $processedFields)
     {

system/Database/SQLite3/Forge.php

@@ -114,6 +114,7 @@ public function dropDatabase(string $dbName): bool
      *
      * @return array|string|null
      * @return list<string>|string|null SQL string or null
+     * @phpstan-return ($alterType is 'DROP' ? string : list<string>|false|null)
      */
     protected function _alterTable(string $alterType, string $table, $processedFields)
     {