diff options
Diffstat (limited to 'user_guide_src')
18 files changed, 596 insertions, 149 deletions
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst index 77c018a11..ff7229243 100644 --- a/user_guide_src/source/changelog.rst +++ b/user_guide_src/source/changelog.rst @@ -51,7 +51,8 @@ Release Date: Not Released - Changed detection of ``$view_folder`` so that if it's not found in the current path, it will now also be searched for under the application folder. - Path constants BASEPATH, APPPATH and VIEWPATH are now (internally) defined as absolute paths. - Updated email validation methods to use ``filter_var()`` instead of PCRE. - - Changed environment defaults to report all errors in 'development' and only fatal ones in 'testing' and 'production' but only display them in 'development'. + - Changed environment defaults to report all errors in *development* and only fatal ones in *testing*, *production* but only display them in *development*. + - Updated *ip_address* database field lengths from 16 to 45 for supporting IPv6 address on :doc:`Trackback Library <libraries/trackback>` and :doc:`Captcha Helper <helpers/captcha_helper>`. - Helpers @@ -66,6 +67,7 @@ Release Date: Not Released - ``anchor_popup()`` will now fill the "href" attribute with the URL and its JS code will return false instead. - Added JS window name support to ``anchor_popup()`` function. - Added support (auto-detection) for HTTP/1.1 response code 303 in ``redirect()``. + - "auto" method in ``redirect()`` now chooses the "refresh" method only on IIS servers, instead of all servers on Windows. - Added XHTML Basic 1.1 doctype to :doc:`HTML Helper <helpers/html_helper>`. - Changed ``humanize()`` to include a second param for the separator. - Refactored ``plural()`` and ``singular()`` to avoid double pluralization and support more words. @@ -142,25 +144,39 @@ Release Date: Not Released - Added PDO support for ``list_fields()`` in :doc:`Database Results <database/results>`. - Added capability for packages to hold database.php config files - Added subdrivers support (currently only used by PDO). + - Added client compression support for MySQL and MySQLi. + - Removed :doc:`Loader Class <libraries/loader>` from Database error tracing to better find the likely culprit. - Libraries - - CI_Session now respects php.ini's session.gc_probability and session.gc_divisor - - Added max_filename_increment config setting for Upload library. - - CI_Loader::_ci_autoloader() is now a protected method. + - :doc:`Session Library <libraries/sessions>` changes include: + - Library changed to :doc:`Driver <general/drivers>` with classic Cookie driver as default. + - Added Native PHP Session driver to work with $_SESSION. + - Custom session drivers can be added anywhere in package paths and loaded with Session library. + - Session drivers interchangeable on the fly. + - New tempdata feature allows setting user data items with an expiration time. + - Added default $config['sess_driver'] and $config['sess_valid_drivers'] items to config.php file. + - Cookie driver now respects php.ini's session.gc_probability and session.gc_divisor + - Changed the Cookie driver to select only one row when using database sessions. + - Cookie driver now only writes to database at end of request when using database. + - Cookie driver now uses PHP functions for faster array manipulation when using database. + - Added ``all_flashdata()`` method to session class. Returns an associative array of only flashdata. + - Added ``has_userdata()`` method to verify existence of userdata item. + - Added ``tempdata()``, ``set_tempdata()``, and ``unset_tempdata()`` methods for manipulating tempdata. + - :doc:`File Uploading Library <libraries/upload>` changes include: + - Added *max_filename_increment* config setting. + - Added an "index" parameter to the ``data()`` method. - :doc:`Cart library <libraries/cart>` changes include: - It now auto-increments quantity's instead of just resetting it, this is the default behaviour of large e-commerce sites. - Product Name strictness can be disabled via the Cart Library by switching "$product_name_safe". - Added function remove() to remove a cart item, updating with quantity of 0 seemed like a hack but has remained to retain compatibility. - :doc:`Image Manipulation library <libraries/image_lib>` changes include: - The initialize() method now only sets existing class properties. - - Added support for 3-length hex color values for wm_font_color and wm_shadow_color properties, as well as validation for them. - - Class properties wm_font_color, wm_shadow_color and wm_use_drop_shadow are now protected, to avoid breaking the text_watermark() method if they are set manually after initialization. - - If property maintain_ratio is set to TRUE, image_reproportion() now doesn't need both width and height to be specified. - - Property maintain_ratio is now taken into account when resizing images using ImageMagick library - - Removed SHA1 function in the :doc:`Encryption Library <libraries/encryption>`. - - Added $config['csrf_regeneration'] to the CSRF protection in the :doc:`Security library <libraries/security>`, which makes token regeneration optional. - - Added $config['csrf_exclude_uris'] to the CSRF protection in the :doc:`Security library <libraries/security>`, which allows you list URIs which will not have the CSRF validation functions run. + - Added support for 3-length hex color values for *wm_font_color* and *wm_shadow_color* properties, as well as validation for them. + - Class properties *wm_font_color*, *wm_shadow_color* and *wm_use_drop_shadow* are now protected, to avoid breaking the ``text_watermark()`` method if they are set manually after initialization. + - If property *maintain_ratio* is set to TRUE, ``image_reproportion()`` now doesn't need both width and height to be specified. + - Property *maintain_ratio* is now taken into account when resizing images using ImageMagick library. + - Added support for maintaining transparency for PNG images in method ``text_watermark()``. - :doc:`Form Validation library <libraries/form_validation>` changes include: - Added method error_array() to return all error messages as an array. - Added method set_data() to set an alternative data array to be validated instead of the default $_POST. @@ -171,9 +187,7 @@ Release Date: Not Released - Native PHP functions used as rules can now accept an additional parameter, other than the data itself. - Updated set_rules() to accept an array of rules as well as a string. - Fields that have empty rules set no longer run through validation (and therefore are not considered erroneous). - - Changed the :doc:`Session Library <libraries/sessions>` to select only one row when using database sessions. - - Added all_flashdata() method to session class. Returns an associative array of only flashdata. - - Allowed for setting table class defaults in a config file. + - Added support for setting :doc:`Table <libraries/table>` class defaults in a config file. - Added a Wincache driver to the :doc:`Caching Library <libraries/caching>`. - Added a Redis driver to the :doc:`Caching Library <libraries/caching>`. - :doc:`Email library <libraries/email>` changes include: @@ -182,34 +196,47 @@ Release Date: Not Released - Added dsn (delivery status notification) option. - Renamed method _set_header() to set_header() and made it public to enable adding custom headers in the :doc:`Email Library <libraries/email>`. - Successfully sent emails will automatically clear the parameters. - - Added an "index" parameter to the data() method in the :doc:`Upload Library <libraries/file_uploading>`. + - Added a *return_path* parameter to the ``from()`` method. - :doc:`Pagination Library <libraries/pagination>` changes include: - Added support for the anchor "rel" attribute. - Added support for setting custom attributes. - Deprecated usage of the "anchor_class" setting (use the new "attributes" setting instead). - Added $config['reuse_query_string'] to allow automatic repopulation of query string arguments, combined with normal URI segments. + - Removed the default `` `` from a number of the configuration variables. - Added the ability to use a proxy with the :doc:`XML-RPC Library <libraries/xmlrpc>`. + - :doc:`Encryption Library <libraries/encrypt>` changes include: + - Added support for hashing algorithms other than SHA1 and MD5. + - Removed previously deprecated ``sha1()`` method. - Core - Changed private methods in the :doc:`URI Library <libraries/uri>` to protected so MY_URI can override them. - - Removed CI_CORE boolean constant from CodeIgniter.php (no longer Reactor and Core versions). - - Added method get_vars() to the :doc:`Loader Library <libraries/loader>` to retrieve all variables loaded with $this->load->vars(). - - is_loaded() function from system/core/Commons.php now returns a reference. + - Removed ``CI_CORE`` boolean constant from CodeIgniter.php (no longer Reactor and Core versions). + - :doc:`Loader Library <libraries/loader>` changes include: + - Added method get_vars() to the Loader to retrieve all variables loaded with $this->load->vars(). + - CI_Loader::_ci_autoloader() is now a protected method. + - Added autoloading of drivers with $autoload['drivers']. + - CI_Loader::library() will now load drivers as well, for backward compatibility of converted libraries (like Session). + - ``is_loaded()`` function from *system/core/Commons.php* now returns a reference. - $config['rewrite_short_tags'] now has no effect when using PHP 5.4 as *<?=* will always be available. - - Added method() to the :doc:`Input Library <libraries/input>` to retrieve $_SERVER['REQUEST_METHOD']. + - Added ``method()`` to the :doc:`Input Library <libraries/input>` to retrieve ``$_SERVER['REQUEST_METHOD']``. - Modified valid_ip() to use PHP's filter_var() in the :doc:`Input Library <libraries/input>`. - - Added support for HTTP-Only cookies with new config option ``cookie_httponly`` (default FALSE). + - Added support for HTTP-Only cookies with new config option *cookie_httponly* (default FALSE). - Renamed method _call_hook() to call_hook() in the :doc:`Hooks Library <general/hooks>`. - - Added get_content_type() method to the :doc:`Output Library <libraries/output>`. - - Added get_mimes() function to system/core/Commons.php to return the config/mimes.php array. - - Added a second argument to set_content_type() in the :doc:`Output Library <libraries/output>` that allows setting the document charset as well. - - $config['time_reference'] now supports all timezone strings supported by PHP. - - Added support for HTTP code 303 ("See Other") in set_status_header(). - - Changed :doc:`Config Library <libraries/config>` method site_url() to accept an array as well. - - Added method ``strip_image_tags()`` to the :doc:`Security Library <libraries/security>`. + - :doc:`Output Library <libraries/output>` changes include: + - Added method ``get_content_type()``. + - Added a second argument to method ``set_content_type()`` that allows setting the document charset as well. + - Added ``get_mimes()`` function to *system/core/Commons.php* to return the *config/mimes.php* array. + - ``$config['time_reference']`` now supports all timezone strings supported by PHP. + - Added support for HTTP code 303 ("See Other") in ``set_status_header()``. + - Changed :doc:`Config Library <libraries/config>` method ``site_url()`` to accept an array as well. + - :doc:`Security Library <libraries/security>` changes include: + - Added method ``strip_image_tags()``. + - Added ``$config['csrf_regeneration']``, which makes token regeneration optional. + - Added ``$config['csrf_exclude_uris']``, which allows you list URIs which will not have the CSRF validation methods run. - Changed ``_exception_handler()`` to respect php.ini 'display_errors' setting. - - Added support for IPv4 range masks (e.g. 192.168.1.1/24) to specify ranges of IP addresses for use with the proxy_ips setting. + - Removed redundant conditional to determine HTTP server protocol in ``set_status_header()``. + - Added support for IPv4 range masks (e.g. 192.168.1.1/24) to specify ranges of IP addresses for use with the *proxy_ips* setting. Bug fixes for 3.0 ------------------ @@ -293,12 +320,12 @@ Bug fixes for 3.0 - Fixed a bug (#666) - :doc:`Output library <libraries/output>`'s set_content_type() method didn't set the document charset. - Fixed a bug (#784, #861) - :doc:`Database Forge <database/forge>` method ``create_table()`` used to accept constraints for MSSQL/SQLSRV integer-type columns. - Fixed a bug (#706) - SQLSRV/MSSSQL didn't escape field names. -- Fixed a bug (#1452) - protect_identifiers() didn't properly detect identifiers with spaces in their names. -- Fixed a bug where protect_identifiers() ignored it's extra arguments when the value passed to it is an array. -- Fixed a bug where _has_operator() didn't detect BETWEEN. -- Fixed a bug in :doc:`Query Builder <database/query_builder>`'s join() method where it failed with identifiers containing dashes. +- Fixed a bug (#1452) - ``protect_identifiers()`` didn't properly detect identifiers with spaces in their names. +- Fixed a bug where ``protect_identifiers()`` ignored it's extra arguments when the value passed to it is an array. +- Fixed a bug where ``_has_operator()`` didn't detect BETWEEN. +- Fixed a bug in :doc:`Query Builder <database/query_builder>`'s ``join()`` method where it failed with identifiers containing dashes. - Fixed a bug (#1264) - :doc:`Database Forge <database/forge>` and :doc:`Database Utilities <database/utilities>` didn't update/reset the databases and tables list cache when a table or a database is created, dropped or renamed. -- Fixed a bug (#7) - :doc:`Query Builder <database/query_builder>`'s join() method only escaped one set of conditions. +- Fixed a bug (#7) - :doc:`Query Builder <database/query_builder>`'s ``join()`` method only escaped one set of conditions. - Fixed a bug (#1321) - Core Exceptions class couldn't find the errors/ folder in some cases. - Fixed a bug in the File-based :doc:`Cache Library <libraries/caching>` driver's get_metadata() method where a non-existent array key was accessed for the TTL value. - Fixed a bug (#1202) - :doc:`Encryption Library <libraries/encryption>` encode_from_legacy() didn't set back the encrypt mode on failure. @@ -322,6 +349,11 @@ Bug fixes for 3.0 - Fixed a bug (#1613) - :doc:`Form Helper <helpers/form_helper>` functions ``form_multiselect()``, ``form_dropdown()`` didn't properly handle empty array option groups. - Fixed a bug (#1605) - :doc:`Pagination Library <libraries/pagination>` produced incorrect *previous* and *next* link values. - Fixed a bug in SQLSRV's ``affected_rows()`` method where an erroneous function name was used. +- Fixed a bug (#1000) - Change syntax of ``$view_file`` to ``$_ci_view_file`` to prevent being overwritten by application. +- Fixed a bug (#1757) - :doc:`Directory Helper <helpers/directory_helper>` function ``directory_map()`` was skipping files and directories named *0*. +- Fixed a bug (#1789) - :doc:`Database Library <database/index>` method ``escape_str()`` escaped quote characters in LIKE conditions twice under MySQL. +- Fixed a bug (#395) - :doc:`Unit Testing Library <libraries/unit_testing>` method ``result()`` didn't properly check array result columns when called from ``report()``. +- Fixed a bug (#1692) - :doc:`Database Library <database/index>` method ``display_error()`` didn't properly trace the possible error source on Windows systems. Version 2.1.2 ============= diff --git a/user_guide_src/source/database/configuration.rst b/user_guide_src/source/database/configuration.rst index c17de600a..636b5b5b2 100644 --- a/user_guide_src/source/database/configuration.rst +++ b/user_guide_src/source/database/configuration.rst @@ -28,6 +28,7 @@ prototype:: 'dbcollat' => 'utf8_general_ci', 'swap_pre' => '', 'autoinit' => TRUE, + 'compress' => TRUE, 'stricton' => FALSE, 'failover' => array() ); @@ -69,6 +70,7 @@ These failovers can be specified by setting the failover for a connection like t 'dbcollat' => 'utf8_general_ci', 'swap_pre' => '', 'autoinit' => TRUE, + 'compress' => TRUE, 'stricton' => FALSE ), array( @@ -86,6 +88,7 @@ These failovers can be specified by setting the failover for a connection like t 'dbcollat' => 'utf8_general_ci', 'swap_pre' => '', 'autoinit' => TRUE, + 'compress' => TRUE, 'stricton' => FALSE ) ); @@ -115,6 +118,7 @@ example, to set up a "test" environment you would do this:: 'dbcollat' => 'utf8_general_ci', 'swap_pre' => '', 'autoinit' => TRUE, + 'compress' => TRUE, 'stricton' => FALSE, 'failover' => array() ); @@ -174,11 +178,12 @@ Explanation of Values: customizable by the end user. **autoinit** Whether or not to automatically connect to the database when the library loads. If set to false, the connection will take place prior to executing the first query. +**compress** Whether or not to use client compression for MySQL or MySQLi. **stricton** TRUE/FALSE (boolean) - Whether to force "Strict Mode" connections, good for ensuring strict SQL while developing an application. **port** The database port number. To use this value you have to add a line to the database config array. :: - + $db['default']['port'] = 5432; ====================== ================================================================================================== diff --git a/user_guide_src/source/general/reserved_names.rst b/user_guide_src/source/general/reserved_names.rst index 5ce7fc2ff..3354375c5 100644 --- a/user_guide_src/source/general/reserved_names.rst +++ b/user_guide_src/source/general/reserved_names.rst @@ -45,11 +45,11 @@ Constants --------- - ENVIRONMENT -- EXT - FCPATH - SELF - BASEPATH - APPPATH +- VIEWPATH - CI_VERSION - FILE_READ_MODE - FILE_WRITE_MODE diff --git a/user_guide_src/source/helpers/captcha_helper.rst b/user_guide_src/source/helpers/captcha_helper.rst index 48095a11d..90244739b 100644 --- a/user_guide_src/source/helpers/captcha_helper.rst +++ b/user_guide_src/source/helpers/captcha_helper.rst @@ -102,7 +102,7 @@ Here is a table prototype CREATE TABLE captcha ( captcha_id bigint(13) unsigned NOT NULL auto_increment, captcha_time int(10) unsigned NOT NULL, - ip_address varchar(16) default '0' NOT NULL, + ip_address varchar(45) NOT NULL, word varchar(20) NOT NULL, PRIMARY KEY `captcha_id` (`captcha_id`), KEY `word` (`word`) diff --git a/user_guide_src/source/helpers/url_helper.rst b/user_guide_src/source/helpers/url_helper.rst index 305454048..1987dfb72 100644 --- a/user_guide_src/source/helpers/url_helper.rst +++ b/user_guide_src/source/helpers/url_helper.rst @@ -303,7 +303,7 @@ link. The function will build the URL based on your config file values. The optional second parameter allows you to force a particular redirection method. The available methods are "location" or "refresh", with location -being faster but less reliable on Windows servers. The default is "auto", +being faster but less reliable on IIS servers. The default is "auto", which will attempt to intelligently choose the method based on the server environment. @@ -325,3 +325,7 @@ engine purposes. The default Response Code is 302. The third parameter is .. note:: For very fine grained control over headers, you should use the `Output Library </libraries/output>` set_header() function. + +.. note:: To IIS users: if you hide the `Server` HTTP header, the "auto" + method won't detect IIS, in that case it is advised you explicitly + use the "refresh" method. diff --git a/user_guide_src/source/images/codeigniter_1.7.1_library_reference.png b/user_guide_src/source/images/codeigniter_1.7.1_library_reference.png Binary files differindex 554ae2eed..7f054f95f 100644 --- a/user_guide_src/source/images/codeigniter_1.7.1_library_reference.png +++ b/user_guide_src/source/images/codeigniter_1.7.1_library_reference.png diff --git a/user_guide_src/source/index.rst b/user_guide_src/source/index.rst index e42425bab..35089703f 100644 --- a/user_guide_src/source/index.rst +++ b/user_guide_src/source/index.rst @@ -80,6 +80,7 @@ Driver Reference - :doc:`libraries/caching` - :doc:`database/index` - :doc:`libraries/javascript` +- :doc:`libraries/sessions` **************** Helper Reference @@ -119,4 +120,4 @@ Contributing to CodeIgniter documentation/index tutorial/index general/quick_reference - general/credits
\ No newline at end of file + general/credits diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst index 64a237069..31a5c0761 100644 --- a/user_guide_src/source/installation/upgrade_300.rst +++ b/user_guide_src/source/installation/upgrade_300.rst @@ -31,8 +31,24 @@ Step 3: Remove $autoload['core'] from your config/autoload.php Use of the ``$autoload['core']`` config array has been deprecated as of CodeIgniter 1.4.1 and is now removed. Move any entries that you might have listed there to ``$autoload['libraries']`` instead. +************************************************************** +Step 4: Add new session driver items to your config/config.php +************************************************************** + +With the change from a single Session Library to the new Session Driver, two new config items have been added: + + - ``$config['sess_driver']`` selects which driver to initially load. Options are: + - 'cookie' (the default) for classic CodeIgniter cookie-based sessions + - 'native' for native PHP Session support + - the name of a custom driver you have provided (see :doc:`Session Driver <../libraries/sessions>` for more info) + - ``$config['sess_valid_drivers']`` provides an array of additional custom drivers to make available for loading + +As the new Session Driver library loads the classic Cookie driver by default and always makes 'cookie' and 'native' +available as valid drivers, neither of these configuration items are required. However, it is recommended that you +add them for clarity and ease of configuration in the future. + *************************************** -Step 4: Update your config/database.php +Step 5: Update your config/database.php *************************************** Due to 3.0.0's renaming of Active Record to Query Builder, inside your `config/database.php`, you will @@ -43,20 +59,20 @@ need to rename the `$active_record` variable to `$query_builder`. $query_builder = TRUE; ******************************* -Step 5: Move your errors folder +Step 6: Move your errors folder ******************************* In version 3.0.0, the errors folder has been moved from _application/errors* to _application/views/errors*. **************************************************************************** -Step 6: Check the calls to Array Helper's element() and elements() functions +Step 7: Check the calls to Array Helper's element() and elements() functions **************************************************************************** The default return value of these functions, when the required elements don't exist, has been changed from FALSE to NULL. *************************************************************** -Step 7: Remove usage of (previously) deprecated functionalities +Step 8: Remove usage of (previously) deprecated functionalities *************************************************************** In addition to the ``$autoload['core']`` configuration setting, there's a number of other functionalities @@ -151,4 +167,4 @@ emails. To override this behaviour, pass FALSE as the first parameter in the ``s if ($this->email->send(FALSE)) { // Parameters won't be cleared - }
\ No newline at end of file + } diff --git a/user_guide_src/source/libraries/email.rst b/user_guide_src/source/libraries/email.rst index 4403079b6..e7ed9f74c 100644 --- a/user_guide_src/source/libraries/email.rst +++ b/user_guide_src/source/libraries/email.rst @@ -117,6 +117,13 @@ Sets the email address and name of the person sending the email:: $this->email->from('you@example.com', 'Your Name'); +You can also set a Return-Path, to help redirect undelivered mail:: + + $this->email->from('you@example.com', 'Your Name', 'returned_emails@example.com'); + +.. note:: Return-Path can't be used if you've configured + 'smtp' as your protocol. + $this->email->reply_to() ------------------------- diff --git a/user_guide_src/source/libraries/file_uploading.rst b/user_guide_src/source/libraries/file_uploading.rst index 65cd5c722..1698dcbb9 100644 --- a/user_guide_src/source/libraries/file_uploading.rst +++ b/user_guide_src/source/libraries/file_uploading.rst @@ -197,6 +197,7 @@ Preference Default Value Options Descripti Separate multiple types with a pipe. **file_name** None Desired file name If set CodeIgniter will rename the uploaded file to this name. The extension provided in the file name must also be an allowed file type. + If no extension is provided in the original file_name will be used. **overwrite** FALSE TRUE/FALSE (boolean) If set to true, if a file with the same name as the one you are uploading exists, it will be overwritten. If set to false, a number will be appended to the filename if another with the same name exists. diff --git a/user_guide_src/source/libraries/form_validation.rst b/user_guide_src/source/libraries/form_validation.rst index bc25d8292..29e1be032 100644 --- a/user_guide_src/source/libraries/form_validation.rst +++ b/user_guide_src/source/libraries/form_validation.rst @@ -870,8 +870,9 @@ Rule Parameter Description ========================= ========== ============================================================================================= ======================= **required** No Returns FALSE if the form element is empty. **matches** Yes Returns FALSE if the form element does not match the one in the parameter. matches[form_item] -**is_unique** Yes Returns FALSE if the form element is not unique to the is_unique[table.field] - table and field name in the parameter. is_unique[table.field] +**is_unique** Yes Returns FALSE if the form element is not unique to the table and field name in the is_unique[table.field] + parameter. Note: This rule requires :doc:`Query Builder <database/query_builder>` to be + enabled in order to work. **max_length** Yes Returns FALSE if the form element is longer then the parameter value. max_length[12] **exact_length** Yes Returns FALSE if the form element is not exactly the parameter value. exact_length[8] **greater_than** Yes Returns FALSE if the form element is less than or equal to the parameter value or not greater_than[8] @@ -893,7 +894,6 @@ Rule Parameter Description 0, 1, 2, 3, etc. **is_natural_no_zero** No Returns FALSE if the form element contains anything other than a natural number, but not zero: 1, 2, 3, etc. -**is_unique** Yes Returns FALSE if the form element is not unique in a database table. is_unique[table.field] **valid_email** No Returns FALSE if the form element does not contain a valid email address. **valid_emails** No Returns FALSE if any value provided in a comma separated list is not a valid email. **valid_ip** No Returns FALSE if the supplied IP is not valid. diff --git a/user_guide_src/source/libraries/image_lib.rst b/user_guide_src/source/libraries/image_lib.rst index ed6575c62..dcdccbd92 100644 --- a/user_guide_src/source/libraries/image_lib.rst +++ b/user_guide_src/source/libraries/image_lib.rst @@ -91,9 +91,9 @@ error upon failure, like this:: echo $this->image_lib->display_errors(); } -Note: You can optionally specify the HTML formatting to be applied to -the errors, by submitting the opening/closing tags in the function, like -this:: +.. note:: You can optionally specify the HTML formatting to be applied to + the errors, by submitting the opening/closing tags in the function, + like this:: $this->image_lib->display_errors('<p>', '</p>'); @@ -225,8 +225,7 @@ pixels) specifying where to crop, like this:: $config['y_axis'] = '40'; All preferences listed in the table above are available for this -function except these: rotation_angle, width, height, create_thumb, -new_image. +function except these: rotation_angle, create_thumb, new_image. Here's an example showing how you might crop an image:: @@ -243,11 +242,11 @@ Here's an example showing how you might crop an image:: echo $this->image_lib->display_errors(); } -Note: Without a visual interface it is difficult to crop images, so this -function is not very useful unless you intend to build such an -interface. That's exactly what we did using for the photo gallery module -in ExpressionEngine, the CMS we develop. We added a JavaScript UI that -lets the cropping area be selected. +.. note:: Without a visual interface it is difficult to crop images, so this + function is not very useful unless you intend to build such an + interface. That's exactly what we did using for the photo gallery module + in ExpressionEngine, the CMS we develop. We added a JavaScript UI that + lets the cropping area be selected. $this->image_lib->rotate() =========================== @@ -338,8 +337,8 @@ The above example will use a 16 pixel True Type font to create the text bottom/center of the image, 20 pixels from the bottom of the image. .. note:: In order for the image class to be allowed to do any - processing, the image file must have "write" file permissions. For - example, 777. + processing, the image file must have "write" file permissions + For example, 777. Watermarking Preferences ======================== diff --git a/user_guide_src/source/libraries/loader.rst b/user_guide_src/source/libraries/loader.rst index aadf9740a..615aba1c2 100644 --- a/user_guide_src/source/libraries/loader.rst +++ b/user_guide_src/source/libraries/loader.rst @@ -4,6 +4,7 @@ Loader Class Loader, as the name suggests, is used to load elements. These elements can be libraries (classes) :doc:`View files <../general/views>`, +:doc:`Drivers <../general/drivers>`, :doc:`Helpers <../general/helpers>`, :doc:`Models <../general/models>`, or your own files. @@ -74,6 +75,70 @@ Assigning a Library to a different object name If the third (optional) parameter is blank, the library will usually be assigned to an object with the same name as the library. For example, if +the library is named Calendar, it will be assigned to a variable named +$this->calendar. + +If you prefer to set your own class names you can pass its value to the +third parameter:: + + $this->load->library('calendar', '', 'my_calendar'); + + // Calendar class is now accessed using: + + $this->my_calendar + +Please take note, when multiple libraries are supplied in an array for +the first parameter, this parameter is discarded. + +$this->load->driver('parent_name', $config, 'object name') +=========================================================== + +This function is used to load driver libraries. Where parent_name is the +name of the parent class you want to load. + +As an example, if you would like to use sessions with CodeIgniter, the first +step is to load the session driver within your controller:: + + $this->load->driver('session'); + +Once loaded, the library will be ready for use, using +$this->session->*some_function*(). + +Driver files must be stored in a subdirectory within the main +"libraries" folder, or within your personal application/libraries +folder. The subdirectory must match the parent class name. Read the +:doc:`Drivers <../general/drivers>` description for details. + +Additionally, multiple driver libraries can be loaded at the same time by +passing an array of drivers to the load function. + +:: + + $this->load->driver(array('session', 'cache')); + +Setting options +--------------- + +The second (optional) parameter allows you to optionally pass +configuration settings. You will typically pass these as an array:: + + $config = array ( + 'sess_driver' => 'cookie', + 'sess_encrypt_cookie' => true, + 'encryption_key' => 'mysecretkey' + ); + + $this->load->driver('session', $config); + +Config options can usually also be set via a config file. Each library +is explained in detail in its own page, so please read the information +regarding each one you would like to use. + +Assigning a Driver to a different object name +---------------------------------------------- + +If the third (optional) parameter is blank, the library will be assigned +to an object with the same name as the parent class. For example, if the library is named Session, it will be assigned to a variable named $this->session. @@ -86,8 +151,8 @@ third parameter:: $this->my_session -Please take note, when multiple libraries are supplied in an array for -the first parameter, this parameter is discarded. +.. note:: Driver libraries may also be loaded with the library() method, + but it is faster to use driver() $this->load->view('file_name', $data, true/false) ================================================== @@ -279,6 +344,6 @@ calling add_package_path(). $this->load->remove_package_path(APPPATH.'my_app'); // Again without the second parameter: - $this->load->add_package_path(APPPATH.'my_app', TRUE); + $this->load->add_package_path(APPPATH.'my_app'); $this->load->view('my_app_index'); // Loads - $this->load->view('welcome_message'); // Loads
\ No newline at end of file + $this->load->view('welcome_message'); // Loads diff --git a/user_guide_src/source/libraries/migration.rst b/user_guide_src/source/libraries/migration.rst index 5192f1f29..cb7d96a6d 100644 --- a/user_guide_src/source/libraries/migration.rst +++ b/user_guide_src/source/libraries/migration.rst @@ -2,4 +2,136 @@ Migrations Class ################ -Coming soon.
\ No newline at end of file +Migrations are a convenient way for you to alter your database in a +structured and organized manner. You could edit fragments of SQL by hand +but you would then be responsible for telling other developers that they +need to go and run them. You would also have to keep track of which changes +need to be run against the production machines next time you deploy. + +The database table **migration** tracks which migrations have already been +run so all you have to do is update your application files and +call **$this->migrate->current()** to work out which migrations should be run. +The current version is found in **config/migration.php**. + +****************** +Create a Migration +****************** + +.. note:: Each Migration is run in numerical order forward or backwards + depending on the method taken. Use a prefix of 3 numbers followed by an + underscore for the filename of your migration. + +This will be the first migration for a new site which has a blog. All +migrations go in the folder **application/migrations/** and have names such +as: **001_add_blog.php**.:: + + defined('BASEPATH') OR exit('No direct script access allowed'); + + class Migration_Add_blog extends CI_Migration { + + public function up() + { + $this->dbforge->add_field(array( + 'blog_id' => array( + 'type' => 'INT', + 'constraint' => 5, + 'unsigned' => TRUE, + 'auto_increment' => TRUE + ), + 'blog_title' => array( + 'type' => 'VARCHAR', + 'constraint' => '100', + ), + 'blog_description' => array( + 'type' => 'TEXT', + 'null' => TRUE, + ), + )); + + $this->dbforge->create_table('blog'); + } + + public function down() + { + $this->dbforge->drop_table('blog'); + } + +Then in **application/config/migration.php** set **$config['migration_version'] = 1;**. + +************* +Usage Example +************* + +In this example some simple code is placed in **application/controllers/migrate.php** +to update the schema.:: + + $this->load->library('migration'); + + if ( ! $this->migration->current()) + { + show_error($this->migration->error_string()); + } + +****************** +Function Reference +****************** + +There are five available methods for the Migration class: + +- $this->migration->current(); +- $this->migration->error_string(); +- $this->migration->find_migrations(); +- $this->migration->latest(); +- $this->migration->version(); + +$this->migration->current() +============================ + +The current migration is whatever is set for **$config['migration_version']** in +**application/config/migration.php**. + +$this->migration->error_string() +================================= + +This returns a string of errors while performing a migration. + +$this->migration->find_migrations() +==================================== + +An array of migration filenames are returned that are found in the **migration_path** +property. + +$this->migration->latest() +=========================== + +This works much the same way as current() but instead of looking for +the **$config['migration_version']** the Migration class will use the very +newest migration found in the filesystem. + +$this->migration->version() +============================ + +Version can be used to roll back changes or step forwards programmatically to +specific versions. It works just like current but ignores **$config['migration_version']**.:: + + $this->load->library('migration'); + + $this->migration->version(5); + +********************* +Migration Preferences +********************* + +The following is a table of all the config options for migrations. + +========================== ====================== ============= ============================================= +Preference Default Options Description +========================== ====================== ============= ============================================= +**migration_enabled** FALSE TRUE / FALSE Enable or disable migrations. +**migration_path** APPPATH.'migrations/' None The path to your migrations folder. +**migration_version** 0 None The current version your database should use. +**migration_table** migrations None The table name for storing the shema + version number. +**migration_auto_latest** FALSE TRUE / FALSE Enable or disable automatically + running migrations. +========================== ====================== ============= ============================================= diff --git a/user_guide_src/source/libraries/pagination.rst b/user_guide_src/source/libraries/pagination.rst index 7d750bd23..00554c1c7 100644 --- a/user_guide_src/source/libraries/pagination.rst +++ b/user_guide_src/source/libraries/pagination.rst @@ -80,7 +80,7 @@ The number of "digit" links you would like before and after the selected page number. For example, the number 2 will place two digits on either side, as in the example links at the very top of this page. -$config['use_page_number'] = TRUE; +$config['use_page_numbers'] = TRUE; ================================== By default, the URI segment will use the starting index for the items diff --git a/user_guide_src/source/libraries/sessions.rst b/user_guide_src/source/libraries/sessions.rst index 5400524a9..dd9e8cbb4 100644 --- a/user_guide_src/source/libraries/sessions.rst +++ b/user_guide_src/source/libraries/sessions.rst @@ -1,29 +1,19 @@ -############# -Session Class -############# +############## +Session Driver +############## The Session class permits you maintain a user's "state" and track their -activity while they browse your site. The Session class stores session -information for each user as serialized (and optionally encrypted) data -in a cookie. It can also store the session data in a database table for -added security, as this permits the session ID in the user's cookie to -be matched against the stored session ID. By default only the cookie is -saved. If you choose to use the database option you'll need to create -the session table as indicated below. - -.. note:: The Session class does **not** utilize native PHP sessions. It - generates its own session data, offering more flexibility for - developers. - -.. note:: Even if you are not using encrypted sessions, you must set - an :doc:`encryption key <./encryption>` in your config file which is used - to aid in preventing session data manipulation. +activity while they browse your site. CodeIgniter offers two default +session drivers: the classic `Cookie Driver`_, and the `Native Driver`_, +which supports usage of the native PHP Session mechanism. In addition, +you may create your own `Custom Drivers`_ to store session data however +you wish, while still taking advantage of the features of the Session class. Initializing a Session ====================== Sessions will typically run globally with each page load, so the session -class must either be :doc:`initialized <../general/libraries>` in your +class must either be :doc:`initialized <../general/drivers>` in your :doc:`controller <../general/controllers>` constructors, or it can be :doc:`auto-loaded <../general/autoloader>` by the system. For the most part the session class will run unattended in the background, so simply @@ -31,22 +21,25 @@ initializing the class will cause it to read, create, and update sessions. To initialize the Session class manually in your controller constructor, -use the $this->load->library function:: +use the $this->load->driver function:: - $this->load->library('session'); + $this->load->driver('session'); Once loaded, the Sessions library object will be available using: $this->session +.. note:: For backward compatibility, the Session class may stil be loaded + using the $this->load->library function, but converting your applications + to use $this->load->driver is strongly recommended. + How do Sessions work? ===================== When a page is loaded, the session class will check to see if valid -session data exists in the user's session cookie. If sessions data does -**not** exist (or if it has expired) a new session will be created and -saved in the cookie. If a session does exist, its information will be -updated and the cookie will be updated. With each update, the -session_id will be regenerated. +session data exists in the user's session. If sessions data does **not** +exist (or if it has expired) a new session will be created and saved. +If a session does exist, its information will be updated. With each update, +the session_id will be regenerated. It's important for you to understand that once initialized, the Session class runs automatically. There is nothing you need to do to cause the @@ -79,19 +72,12 @@ prototype:: 'last_activity' => timestamp ) -If you have the encryption option enabled, the serialized array will be -encrypted before being stored in the cookie, making the data highly -secure and impervious to being read or altered by someone. More info -regarding encryption can be :doc:`found here <encryption>`, although -the Session class will take care of initializing and encrypting the data -automatically. - -Note: Session cookies are only updated every five minutes by default to -reduce processor load. If you repeatedly reload a page you'll notice -that the "last activity" time only updates if five minutes or more has -passed since the last time the cookie was written. This time is -configurable by changing the $config['sess_time_to_update'] line in -your system/config/config.php file. +.. note:: Sessions are only updated every five minutes by default to + reduce processor load. If you repeatedly reload a page you'll notice + that the "last activity" time only updates if five minutes or more has + passed since the last time the cookie was written. This time is + configurable by changing the $config['sess_time_to_update'] line in + your system/config/config.php file. Retrieving Session Data ======================= @@ -106,7 +92,7 @@ fetch. For example, to fetch the session ID you will do this:: $session_id = $this->session->userdata('session_id'); -.. note:: The function returns FALSE (boolean) if the item you are +.. note:: The function returns NULL if the item you are trying to access does not exist. Adding Custom Session Data @@ -117,7 +103,7 @@ to it and it will be stored in the user's cookie. Why would you want to do this? Here's one example: Let's say a particular user logs into your site. Once authenticated, you -could add their username and email address to the session cookie, making +could add their username and email address to the session, making that data globally available to you without having to run a database query when you need it. @@ -144,11 +130,11 @@ supports this syntax. $this->session->set_userdata('some_name', 'some_value'); +If you want to verify that a userdata value exists, call has_userdata(). -.. note:: Cookies can only hold 4KB of data, so be careful not to exceed - the capacity. The encryption process in particular produces a longer - data string than the original so keep careful track of how much data you - are storing. +:: + + $this->session->has_userdata('some_name'); Retrieving All Session Data =========================== @@ -195,8 +181,8 @@ available for the next server request, and are then automatically cleared. These can be very useful, and are typically used for informational or status messages (for example: "record 2 deleted"). -Note: Flash variables are prefaced with "flash\_" so avoid this prefix -in your own session names. +.. note:: Flash variables are prefaced with "flash\_" so avoid this prefix + in your own session names. To add flashdata:: @@ -222,9 +208,162 @@ additional request, you can do so using the keep_flashdata() function. $this->session->keep_flashdata('item'); +Tempdata +======== + +CodeIgniter also supports "tempdata", or session data with a specific +expiration time. After the value expires, or the session expires or is +deleted, the value is automatically removed. + +To add tempdata:: + + $expire = 300; // Expire in 5 minutes + + $this->session->set_tempdata('item', 'value', $expire); + +You can also pass an array to set_tempdata():: + + $tempdata = array('newuser' => TRUE, 'message' => 'Thanks for joining!'); + + $this->session->set_tempdata($tempdata, '', $expire); + +.. note:: If the expiration is omitted or set to 0, the default expiration of + 5 minutes will be used. + +To read a tempdata variable:: + + $this->session->tempdata('item'); + +If you need to remove a tempdata value before it expires, +use unset_tempdata():: + + $this->session->unset_tempdata('item'); + +Destroying a Session +==================== + +To clear the current session:: + + $this->session->sess_destroy(); + +.. note:: This function should be the last one called, and even flash + variables will no longer be available. If you only want some items + destroyed and not all, use unset_userdata(). + +Session Preferences +=================== + +You'll find the following Session related preferences in your +application/config/config.php file: + +=========================== =============== =========================== ========================================================================== +Preference Default Options Description +=========================== =============== =========================== ========================================================================== +**sess_driver** cookie cookie/native/*custom* The initial session driver to load. +**sess_valid_drivers** cookie, native None Additional valid drivers which may be loaded. +**sess_cookie_name** ci_session None The name you want the session cookie saved as (data for Cookie driver or + session ID for Native driver). +**sess_expiration** 7200 None The number of seconds you would like the session to last. The default + value is 2 hours (7200 seconds). If you would like a non-expiring + session set the value to zero: 0 +**sess_expire_on_close** FALSE TRUE/FALSE (boolean) Whether to cause the session to expire automatically when the browser + window is closed. +**sess_encrypt_cookie** FALSE TRUE/FALSE (boolean) Whether to encrypt the session data (Cookie driver only). +**sess_use_database** FALSE TRUE/FALSE (boolean) Whether to save the session data to a database. You must create the + table before enabling this option (Cookie driver only). +**sess_table_name** ci_sessions Any valid SQL table name The name of the session database table (Cookie driver only). +**sess_time_to_update** 300 Time in seconds This options controls how often the session class will regenerate itself + and create a new session id. +**sess_match_ip** FALSE TRUE/FALSE (boolean) Whether to match the user's IP address when reading the session data. + Note that some ISPs dynamically changes the IP, so if you want a + non-expiring session you will likely set this to FALSE. +**sess_match_useragent** TRUE TRUE/FALSE (boolean) Whether to match the User Agent when reading the session data. +=========================== =============== =========================== ========================================================================== + +In addition to the values above, the cookie and native drivers apply the +following configuration values shared by the :doc:`Input <input>` and +:doc:`Security <security>` classes: + +=========================== =============== ========================================================================== +Preference Default Description +=========================== =============== ========================================================================== +**cookie_prefix** '' Set a cookie name prefix in order to avoid name collisions +**cookie_domain** '' The domain for which the session is applicable +**cookie_path** / The path to which the session is applicable +=========================== =============== ========================================================================== + +Session Drivers +=============== + +By default, the `Cookie Driver`_ is loaded when a session is initialized. +However, any valid driver may be selected with the $config['sess_driver'] +line in your config.php file. + +The session driver library comes with the cookie and native drivers +installed, and `Custom Drivers`_ may also be installed by the user. + +Typically, only one driver will be used at a time, but CodeIgniter does +support loading multiple drivers. If a specific valid driver is called, it +will be automatically loaded. Or, an additional driver may be explicitly +loaded by calling load_driver():: + + $this->session->load_driver('native'); + +The Session library keeps track of the most recently selected driver to call +for driver methods. Normally, session class methods are called directly on +the parent class, as illustrated above. However, any methods called through +a specific driver will select that driver before invoking the parent method. + +So, alternation between multiple drivers can be achieved by specifying which +driver to use for each call:: + + $this->session->native->set_userdata('foo', 'bar'); + + $this->session->cookie->userdata('foo'); + + $this->session->native->unset_userdata('foo'); + +Notice in the previous example that the *native* userdata value 'foo' +would be set to 'bar', which would NOT be returned by the call for +the *cookie* userdata 'foo', nor would the *cookie* value be unset by +the call to unset the *native* 'foo' value. The drivers maintain independent +sets of values, regardless of key names. + +A specific driver may also be explicitly selected for use by pursuant +methods with the select_driver() call:: + + $this->session->select_driver('native'); + + $this->session->userdata('item'); // Uses the native driver + +Cookie Driver +------------- + +The Cookie driver stores session information for each user as serialized +(and optionally encrypted) data in a cookie. It can also store the session +data in a database table for added security, as this permits the session ID +in the user's cookie to be matched against the stored session ID. By default +only the cookie is saved. If you choose to use the database option you'll +need to create the session table as indicated below. + +If you have the encryption option enabled, the serialized array will be +encrypted before being stored in the cookie, making the data highly +secure and impervious to being read or altered by someone. More info +regarding encryption can be :doc:`found here <encryption>`, although +the Session class will take care of initializing and encrypting the data +automatically. + +.. note:: Even if you are not using encrypted sessions, you must set + an :doc:`encryption key <./encryption>` in your config file which is used + to aid in preventing session data manipulation. + +.. note:: Cookies can only hold 4KB of data, so be careful not to exceed + the capacity. The encryption process in particular produces a longer + data string than the original so keep careful track of how much data you + are storing. Saving Session Data to a Database -================================= +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ While the session data array stored in the user's cookie contains a Session ID, unless you store session data in a database there is no way @@ -267,44 +406,83 @@ session class:: $config['sess_table_name'] = 'ci_sessions'; -.. note:: The Session class has built-in garbage collection which clears +.. note:: The Cookie driver has built-in garbage collection which clears out expired sessions so you do not need to write your own routine to do it. -Destroying a Session -==================== +Native Driver +------------- -To clear the current session:: +The Native driver relies on native PHP sessions to store data in the +$_SESSION superglobal array. All stored values continue to be available +through $_SESSION, but flash- and temp- data items carry special prefixes. - $this->session->sess_destroy(); +Custom Drivers +-------------- -.. note:: This function should be the last one called, and even flash - variables will no longer be available. If you only want some items - destroyed and not all, use unset_userdata(). +You may also :doc:`create your own <../general/creating_drivers>` custom +session drivers. A session driver basically manages an array of name/value +pairs with some sort of storage mechanism. -Session Preferences -=================== +To make a new driver, extend CI_Session_driver. Overload the initialize() +method and read or create session data. Then implement a save handler to +write changed data to storage (sess_save), a destroy handler to remove +deleted data (sess_destroy), a regenerate handler to make a new session ID +(sess_regenerate), and an access handler to expose the data (get_userdata). +Your initial class might look like:: -You'll find the following Session related preferences in your -application/config/config.php file: + class CI_Session_custom extends CI_Session_driver { + protected function initialize() + { + // Read existing session data or create a new one + } + + public function sess_save() + { + // Save current data to storage + } + + public function sess_destroy() + { + // Destroy the current session and clean up storage + } + + public function sess_regenerate() + { + // Create new session ID + } + + public function &get_userdata() + { + // Return a reference to your userdata array + } + } + +Notice that get_userdata() returns a reference so the parent library is +accessing the same array the driver object is using. This saves memory +and avoids synchronization issues during usage. + +Put your driver in the libraries/Session/drivers folder anywhere in your +package paths. This includes the application directory, the system directory, +or any path you add with $CI->load->add_package_path(). Your driver must be +named CI_Session_<name>, and your filename must be Session_<name>.php, +preferably also capitalized, such as:: + + CI_Session_foo in libraries/Session/drivers/Session_foo.php + +Then specify the driver by setting 'sess_driver' in your config.php file or as a +parameter when loading the CI_Session object:: + + $config['sess_driver'] = 'foo'; + +OR:: + + $CI->load->driver('session', array('sess_driver' => 'foo')); + +The driver specified by 'sess_driver' is automatically included as a valid +driver. However, if you want to make a custom driver available as an option +without making it the initially loaded driver, set 'sess_valid_drivers' in +your config.php file to an array including your driver name:: + + $config['sess_valid_drivers'] = array('sess_driver'); -=========================== =============== =========================== ========================================================================== -Preference Default Options Description -=========================== =============== =========================== ========================================================================== -**sess_cookie_name** ci_session None The name you want the session cookie saved as. -**sess_expiration** 7200 None The number of seconds you would like the session to last. The default - value is 2 hours (7200 seconds). If you would like a non-expiring - session set the value to zero: 0 -**sess_expire_on_close** FALSE TRUE/FALSE (boolean) Whether to cause the session to expire automatically when the browser - window is closed. -**sess_encrypt_cookie** FALSE TRUE/FALSE (boolean) Whether to encrypt the session data. -**sess_use_database** FALSE TRUE/FALSE (boolean) Whether to save the session data to a database. You must create the - table before enabling this option. -**sess_table_name** ci_sessions Any valid SQL table name The name of the session database table. -**sess_time_to_update** 300 Time in seconds This options controls how often the session class will regenerate itself - and create a new session id. -**sess_match_ip** FALSE TRUE/FALSE (boolean) Whether to match the user's IP address when reading the session data. - Note that some ISPs dynamically changes the IP, so if you want a - non-expiring session you will likely set this to FALSE. -**sess_match_useragent** TRUE TRUE/FALSE (boolean) Whether to match the User Agent when reading the session data. -=========================== =============== =========================== ==========================================================================
\ No newline at end of file diff --git a/user_guide_src/source/libraries/trackback.rst b/user_guide_src/source/libraries/trackback.rst index 07b2b2177..f9e0df882 100644 --- a/user_guide_src/source/libraries/trackback.rst +++ b/user_guide_src/source/libraries/trackback.rst @@ -114,7 +114,7 @@ store them. Here is a basic prototype for such a table:: excerpt text NOT NULL, blog_name varchar(100) NOT NULL, tb_date int(10) NOT NULL, - ip_address varchar(16) NOT NULL, + ip_address varchar(45) NOT NULL, PRIMARY KEY `tb_id` (`tb_id`), KEY `entry_id` (`entry_id`) ); diff --git a/user_guide_src/source/overview/cheatsheets.rst b/user_guide_src/source/overview/cheatsheets.rst index 2e277aa9a..80c3112c4 100644 --- a/user_guide_src/source/overview/cheatsheets.rst +++ b/user_guide_src/source/overview/cheatsheets.rst @@ -5,12 +5,19 @@ CodeIgniter Cheatsheets Library Reference ================= -`|CodeIgniter Library -Reference| <../images/codeigniter_1.7.1_library_reference.pdf>`_ +|CodeIgniter Library Reference| + +- :download:`Download PDF <../images/codeigniter_1.7.1_library_reference.pdf>` + Helpers Reference ================= -`|image1| <../images/codeigniter_1.7.1_helper_reference.pdf>`_ +|CodeIgniter Helper Reference| + +- :download:`Download PDF <../images/codeigniter_1.7.1_helper_reference.pdf>` + .. |CodeIgniter Library Reference| image:: ../images/codeigniter_1.7.1_library_reference.png -.. |image1| image:: ../images/codeigniter_1.7.1_helper_reference.png + :target: ../_downloads/codeigniter_1.7.1_library_reference.pdf +.. |CodeIgniter Helper Reference| image:: ../images/codeigniter_1.7.1_helper_reference.png + :target: ../_downloads/codeigniter_1.7.1_helper_reference.pdf |
