fix db regexp

install/core/Installer.php

@@ -315,14 +315,14 @@ class Installer
                 $pdo = $this->getDatabaseHelper()
                     ->createPdoConnection($params, true);
 
-                $dbname = preg_replace('/[^A-Za-z0-9_]+/', '', $params['dbname']);
+                $dbname = preg_replace('/[^A-Za-z0-9_\-@$#\(\)]+/', '', $params['dbname']);
 
                 if ($dbname !== $params['dbname']) {
                     throw new Exception("Bad database name.");
                 }
 
                 $pdo->query(
-                    "CREATE DATABASE IF NOT EXISTS `" . $dbname . "`"
+                    "CREATE DATABASE IF NOT EXISTS `{$dbname}`"
                 );
 
                 return $this->checkDatabaseConnection($params, false);
@@ -335,7 +335,7 @@ class Installer
     }
 
     /**
-     * Save data
+     * Save data.
      *
      * @param array $database
      * array(
@@ -344,7 +344,7 @@ class Installer
      *   'dbname' => 'espocrm_test',
      *   'user' => 'root',
      *   'password' => '',
-     * ),
+     * )
      * @param string $language
      * @return bool
      */