session_regenerate_id

Function • Params and return types changed in PHP 8.0

Update the current session id with a newly generated one.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

session_regenerate_id Function synopsis

session_regenerate_id(bool $delete_old_session = false): bool

Parameters

$delete_old_session

OptionalTypeboolDefault valuefalse

Whether to delete the old associated session file or not. You should not delete old session if you need to avoid races caused by deletion or detect/avoid session hijack attacks.

Return value

Typebool

Returns true on success, false on failure

Changes to the session_regenerate_id Function

PHP 8.0

  • Return type added: bool
  • Parameter type added for parameter #1 ($delete_old_session): bool
  • Parameter default value added for position #1 ($delete_old_session): false
- session_regenerate_id($delete_old_session)
+ session_regenerate_id(bool $delete_old_session = false): bool

session_regenerate_id Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes