PHP 5.4.17发布。2013-07-04 经过1个RC 上个版本是2013-06-07的5.4.16.修正了大约20个Bug以及几个安全漏洞。尽管5.5.0正式版已经发布。但5.4还未停止更新。5.3 未同步更新到5.3.27 相信很多人还没敢在生产环境中升级到5.5.0。

完全改进：

Version 5.4.17

04-Jul-2013

• Core:
  • Fixed bug #64988 (Class loading order affects E_STRICT warning).
  • Fixed bug #64966 (segfault in zend_do_fcall_common_helper_SPEC).
  • Fixed bug #64960 (Segfault in gc_zval_possible_root).
  • Fixed bug #64936 (doc comments picked up from previous scanner run).
  • Fixed bug #64934 (Apache2 TS crash with get_browser()).
  • Fixed bug #64166 (quoted-printable-encode stream filter incorrectly discarding whitespace).
• DateTime:
  • Fixed bug #53437 (Crash when using unserialized DatePeriod instance).
• FPM:
  • Fixed bug #64915 (error_log ignored when daemonize=0).
  • Implemented FR #64764 (add support for FPM init.d script).
• PDO:
  • Fixed bug #63176 (Segmentation fault when instantiate 2 persistent PDO to the same db server).
• PDO_DBlib:
  • Fixed bug #63638 (Cannot connect to SQL Server 2008 with PDO dblib).
  • Fixed bug #64338 (pdo_dblib can't connect to Azure SQL).
  • Fixed bug #64808 (FreeTDS PDO getColumnMeta on a prepared but not executed statement crashes).
• PDO_firebird:
  • Fixed bug #64037 (Firebird return wrong value for numeric field).
  • Fixed bug #62024 (Cannot insert second row with null using parametrized query).
• PDO_mysql:
  • Fixed bug #48724 (getColumnMeta() doesn't return native_type for BIT, TINYINT and YEAR).
• PDO_pgsql:
  • Fixed bug #64949 (Buffer overflow in _pdo_pgsql_error).
• pgsql:
  • Fixed bug #64609 (pg_convert enum type support).
• Readline:
  • Implement FR #55694 (Expose additional readline variable to prevent default filename completion).
• SPL:
  • Fixed bug #64997 (Segfault while using RecursiveIteratorIterator on 64-bits systems).

下载：http://us1.php.net/distributions/php-5.4.17.tar.bz2