PHP 5.4.9和PHP 5.3.19发布
PHP 5.4.9 and PHP 5.3.19 released!
22-Nov-2012
The PHP development team announces the immediate availability of PHP 5.4.9 and PHP 5.3.19. These releases fix over 15 bugs. All users of PHP are encouraged to upgrade to PHP 5.4.9, or at least 5.3.19.
For source downloads of PHP 5.4.9 and PHP 5.3.19 please visit our downloads page, Windows binaries can be found on windows.php.net/download/.
The list of changes are recorded in the ChangeLog.
Version 5.4.9
22-November-2012
Core:
Fixed bug #63305 (zend_mm_heap corrupted with traits).
Fixed bug #63369 ((un)serialize() leaves dangling pointers, causes crashes).
Fixed bug #63241 (PHP fails to open Windows deduplicated files).
Fixed bug #62444 (Handle leak in is_readable on windows).
Curl:
Fixed bug #63363 (Curl silently accepts boolean true for SSL_VERIFYHOST).
Fileinfo:
Fixed bug #63248 (Load multiple magic files from a directory under Windows).
Libxml
Fixed bug #63389 (Missing context check on libxml_set_streams_context() causes memleak).
Mbstring:
Fixed bug #63447 (max_input_vars doesn't filter variables when mbstring.encoding_translation = On).
OCI8:
Fixed bug #63265 (Add ORA-00028 to the PHP_OCI_HANDLE_ERROR macro)
PCRE:
Fixed bug #63180 (Corruption of hash tables).
Fixed bug #63055 (Segfault in zend_gc with SF2 testsuite).
Fixed bug #63284 (Upgrade PCRE to 8.31).
PDO:
Fixed bug #63235 (buffer overflow in use of SQLGetDiagRec).
PDO_pgsql:
Fixed bug #62593 (Emulate prepares behave strangely with PARAM_BOOL).
Phar:
Fixed bug #63297 (Phar fails to write an openssl based signature).
Streams:
Fixed bug #63240 (stream_get_line() return contains delimiter string).
Reflection:
Fixed bug #63399 (ReflectionClass::getTraitAliases() incorrectly resolves traitnames).
Version 5.3.19
22-November-2012
Core:
Fixed bug #63241 (PHP fails to open Windows deduplicated files).
Fixed bug #62444 (Handle leak in is_readable on windows).
Libxml:
Fixed bug #63389 (Missing context check on libxml_set_streams_context() causes memleak).
Mbstring:
Fixed bug #63447 (max_input_vars doesn't filter variables when mbstring.encoding_translation = On).
MySQL:
Fixed compilation failure on mixed 32/64 bit systems.
OCI8:
Fixed bug #63265 (Add ORA-00028 to the PHP_OCI_HANDLE_ERROR macro)
PCRE:
Fixed bug #63055 (Segfault in zend_gc with SF2 testsuite).
Fixed bug #63284 (Upgrade PCRE to 8.31).
PDO:

Absolute session timeout starts at the time of session creation, while an idle session timeout starts at the time of user's no operation. Absolute session timeout is suitable for scenarios where strict control of the session life cycle is required, such as financial applications; idle session timeout is suitable for applications that want users to keep their session active for a long time, such as social media.

The server session failure can be solved through the following steps: 1. Check the server configuration to ensure that the session is set correctly. 2. Verify client cookies, confirm that the browser supports it and send it correctly. 3. Check session storage services, such as Redis, to ensure that they are running normally. 4. Review the application code to ensure the correct session logic. Through these steps, conversation problems can be effectively diagnosed and repaired and user experience can be improved.

session_start()iscrucialinPHPformanagingusersessions.1)Itinitiatesanewsessionifnoneexists,2)resumesanexistingsession,and3)setsasessioncookieforcontinuityacrossrequests,enablingapplicationslikeuserauthenticationandpersonalizedcontent.

Setting the httponly flag is crucial for session cookies because it can effectively prevent XSS attacks and protect user session information. Specifically, 1) the httponly flag prevents JavaScript from accessing cookies, 2) the flag can be set through setcookies and make_response in PHP and Flask, 3) Although it cannot be prevented from all attacks, it should be part of the overall security policy.

PHPsessionssolvetheproblemofmaintainingstateacrossmultipleHTTPrequestsbystoringdataontheserverandassociatingitwithauniquesessionID.1)Theystoredataserver-side,typicallyinfilesordatabases,anduseasessionIDstoredinacookietoretrievedata.2)Sessionsenhances

PHPsessionscanstorestrings,numbers,arrays,andobjects.1.Strings:textdatalikeusernames.2.Numbers:integersorfloatsforcounters.3.Arrays:listslikeshoppingcarts.4.Objects:complexstructuresthatareserialized.

TostartaPHPsession,usesession_start()atthescript'sbeginning.1)Placeitbeforeanyoutputtosetthesessioncookie.2)Usesessionsforuserdatalikeloginstatusorshoppingcarts.3)RegeneratesessionIDstopreventfixationattacks.4)Considerusingadatabaseforsessionstoragei

Session regeneration refers to generating a new session ID and invalidating the old ID when the user performs sensitive operations in case of session fixed attacks. The implementation steps include: 1. Detect sensitive operations, 2. Generate new session ID, 3. Destroy old session ID, 4. Update user-side session information.


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