2.0快出来了
预览版见http://bitbucket.org/ellislab/codeigniter/downloads包含文件，帮助文档等。更新部分如下
Version 2.0.0Release Date: not yet released
Hg Tag:[*]General changes[*]PHP 4 support is deprecated. Features new to 2.0.0 may not support PHP 4, and all legacy features will no longer support PHP 4 as of 2.1.0.[*]Scaffolding, having been deprecated for a number of versions, has been removed.[*]Plugins have been removed, in favor of Helpers. The CAPTCHA plugin has been converted to a Helper and documented. The JavaScript calendar plugin was removed due to the ready availability of great JavaScript calendars, particularly with jQuery.[*]Added new special Library type: Drivers.[*]Moved the application folder outside of the system folder.[*]Added routing overrides to the main index.php file, enabling the normal routing to be overridden on a per "index" file basis.[*]Added the ability to set config values (or override config values) directly from data set in the main index.php file. This allows a single application to be used with multiple front controllers, each having its own config values.[*]Added $config['directory_trigger'] to the config file so that a controller sub-directory can be specified when running _GET strings instead of URI segments.[*]Added ability to set "Package" paths - specific paths where the Loader and Config classes should try to look first for a requested file. This allows distribution of sub-applications with their own libraries, models, config files, etc. in a single "package" directory. See the Loader class documentation for more details.[*]In-development code is now hosted at BitBucket.[*]Removed the deprecated Validation Class.[*]Libraries[*]Added Security library, which now contains the xss_clean function, filename_security function and other security related functions.[*]Added CSRF (Cross-site Reference Forgery) protection to the Security library.[*]Added $parse_exec_vars property to Output library.[*]Added ability to enable / disable individual sections of the Profiler[*]Added a wildcard option $config['allowed_types'] = '*' to the File Uploading Class.[*]Added an 'object' config variable to the XML-RPC Server library so that one can specify the object to look for requested methods, instead of assuming it is in the $CI superobject.[*]Added "is_object" into the list of unit tests capable of being run.[*]Table library will generate an empty cell with a blank string, or NULL value.[*]Added ability to set tag attributes for individual cells in the Table library[*]Added a parse_string() method to the Parser Class.[*]Added HTTP headers and Config information to the Profiler output.[*]Added Chrome and Flock to the list of detectable browsers by browser() in the User Agent Class.[*]The Unit Test Class now has an optional "notes" field available to it, and allows for discrete display of test result items using $this->unit->set_test_items().[*]Added a $xss_clean class variable to the XMLRPC library, enabling control over the use of the Security library's xss_clean() method.[*]Added a download() method to the FTP library[*]Changed do_xss_clean() to return FALSE if the uploaded file fails XSS checks.[*]Added stripslashes() and trim()ing of double quotes from $_FILES type value to standardize input in Upload library.[*]Added a second parameter (boolean) to $this->zip->read_dir('/path/to/directory', FALSE) to remove the preceding trail of empty folders when creating a Zip archive. This example would contain a zip with "directory" and all of its contents.[*]Database[*]Added swap_pre value to database configuration.[*]Added autoinit value to database configuration.[*]Added stricton value to database configuration.[*]Added database_exists() to the Database Utilities Class.[*]Semantic change to db->version() function to allow a list of exceptions for databases with functions to return version string instead of specially formed SQL queries. Currently this list only includes Oracle and SQLite.[*]Fixed a bug where driver specific table identifier protection could lead to malformed queries in the field_data() functions.[*]Fixed a bug where an undefined class variable was referenced in database drivers.[*]Helpers[*]Added convert_accented_characters() function to text helper.[*]Added accept-charset to the list of inserted attributes of form_open() in the Form Helper.[*]Deprecated the dohash() function in favour of do_hash() for naming consistency.[*]Non-backwards compatible change made to get_dir_file_info() in the File Helper. No longer recurses by default so as to encourage responsible use (this function can cause server performance issues when used without caution).[*]Modified the second parameter of directory_map() in the Directory Helper to accept an integer to specify recursion depth.[*]Modified delete_files() in the File Helper to return FALSE on failure.[*]Added an optional second parameter to byte_format() in the Number Helper to allow for decimal precision.[*]Added alpha, and sha1 string types to random_string() in the String Helper.[*]Modified prep_url() so as to not prepend http:// if the supplied string already has a scheme.[*]Modified get_file_info in the file helper, changing filectime() to filemtime() for dates.[*]Modified smiley_js() to add optional third parameter to return only the javascript with no script tags.[*]Other Changes[*]Updated loader to automatically apply the sub-class prefix as an option when loading classes. Class names can be prefixed with the standard "CI_" or the same prefix as the subclass prefix, or no prefix at all.[*]Increased randomness with is_really_writable() to avoid file collisions when hundreds or thousands of requests occur at once.[*]Switched some DIR_WRITE_MODE constant uses to FILE_WRITE_MODE where files and not directories are being operated on.[*]get_mime_by_extension() is now case insensitive.[*]Added "default" to the list Reserved Names.[*]Added 'application/x-msdownload' for .exe files and ''application/x-gzip-compressed' for .tgz files to config/mimes.php.[*]Updated the output library to no longer compress output or send content-length headers if the server runs with zlib.output_compression enabled.[*]Eliminated a call to is_really_writable() on each request unless it is really needed (Output caching)[*]Documented append_output() in the Output Class.[*]Documented a second argument in the decode() function for the Encryption Class.[*]Documented db->close().[*]Moved _remove_invisible_characters() function from the Security Library to common functions.Bug fixes for 2.0.0[*]Fixed a bug where a failed query would not have a saved query execution time causing errors in the Profiler[*]Fixed a bug that was writing log entries when multiple identical helpers and plugins were loaded.[*]Fixed assorted user guide typos or examples (#10693, #8951, #7825, #8660, #7883, #6771, #10656).[*]Fixed a language key in the profiler: "profiler_no_memory_usage" to "profiler_no_memory".[*]Fixed an error in the Zip library that didn't allow downloading on PHP 4 servers.[*]Fixed a bug in the Form Validation library where fields passed as rule parameters were not being translated (#9132)[*]Modified inflector helper to properly pluralize words that end in 'ch' or 'sh'[*]Fixed a bug in xss_clean() that was not allowing hyphens in query strings of submitted URLs.[*]Fixed bugs in get_dir_file_info() and get_file_info() in the File Helper with recursion, and file paths on Windows.[*]Fixed a bug where Active Record override parameter would not let you disable Active Record if it was enabled in your database config file.[*]Fixed a bug in reduce_double_slashes() in the String Helper to properly remove duplicate leading slashes (#7585)[*]Fixed a bug in values_parsing() of the XML-RPC library which prevented NULL variables typed as 'string' from being handled properly.[*]Fixed a bug were form_open_multipart() didn't accept string attribute arguments (#10930).[*]Fixed a bug (#10470) where get_mime_by_extension() was case sensitive.[*]Fixed a bug where some error messages for the SQLite and Oracle drivers would not display.[*]Fixed a bug where files created with the Zip Library would result in file creation dates of 1980.[*]Fixed a bug in the Session library that would result in PHP error when attempting to store values with objects.[*]Fixed a bug where extending the Controller class would result in a fatal PHP error.[*]Fixed a PHP Strict Standards Error in the index.php file.[*]Fixed a bug where getimagesize() was being needlessly checked on non-image files in is_allowed_type(). 已经有朋友发过 CI 2.0 的新闻了。。。。
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