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- <li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
- </ul>
- </li>
- </ul>
- <ul>
- <li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
- <li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
- </ul>
- </li>
- </ul>
- <ul>
- <li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
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- <li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
- </ul>
- </li>
- </ul>
- <ul>
- <li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
- </ul>
- </li>
- </ul>
- <ul>
- <li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
- <li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
- </ul>
- </li>
- </ul>
- <ul>
- <li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
- <li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
- </ul>
- </li>
- </ul>
-
-
- </div>
-
- </nav>
- <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
-
- <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
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- <a href="../index.html">CodeIgniter</a>
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- <ul class="wy-breadcrumbs">
- <li><a href="../index.html">Docs</a> »</li>
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- <li><a href="index.html">Installation Instructions</a> »</li>
-
- <li><a href="upgrading.html">Upgrading From a Previous Version</a> »</li>
-
- <li>Upgrading from 2.2.x to 3.0.x</li>
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-
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- <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
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- <div role="main" class="document">
-
- <div class="section" id="upgrading-from-2-2-x-to-3-0-x">
- <h1>Upgrading from 2.2.x to 3.0.x<a class="headerlink" href="#upgrading-from-2-2-x-to-3-0-x" title="Permalink to this headline">¶</a></h1>
- <p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>
- <div class="section" id="step-1-update-your-codeigniter-files">
- <h2>Step 1: Update your CodeIgniter files<a class="headerlink" href="#step-1-update-your-codeigniter-files" title="Permalink to this headline">¶</a></h2>
- <p><strong>Replace</strong> all files and directories in your <em>system/</em> directory and
- replace your index.php file. If any modifications were made to your
- index.php they will need to be made fresh in this new one.</p>
- <div class="admonition important">
- <p class="first admonition-title">Important</p>
- <p class="last">You have to delete the old <em>system/</em> directory first and
- then put the new one in its place. A simple copy-paste may cause
- issues.</p>
- </div>
- <div class="admonition note">
- <p class="first admonition-title">Note</p>
- <p class="last">If you have any custom developed files in these folders please
- make copies of them first.</p>
- </div>
- </div>
- <div class="section" id="step-2-update-your-classes-file-names">
- <h2>Step 2: Update your classes file names<a class="headerlink" href="#step-2-update-your-classes-file-names" title="Permalink to this headline">¶</a></h2>
- <p>Starting with CodeIgniter 3.0, all class filenames (libraries, drivers, controllers
- and models) must be named in a Ucfirst-like manner or in other words - they must
- start with a capital letter.</p>
- <p>For example, if you have the following library file:</p>
- <blockquote>
- <div>application/libraries/mylibrary.php</div></blockquote>
- <p>… then you’ll have to rename it to:</p>
- <blockquote>
- <div>application/libraries/Mylibrary.php</div></blockquote>
- <p>The same goes for driver libraries and extensions and/or overrides of CodeIgniter’s
- own libraries and core classes.</p>
- <blockquote>
- <div>application/libraries/MY_email.php
- application/core/MY_log.php</div></blockquote>
- <p>The above files should respectively be renamed to the following:</p>
- <blockquote>
- <div>application/libraries/MY_Email.php
- application/core/MY_Log.php</div></blockquote>
- <p>Controllers:</p>
- <blockquote>
- <div>application/controllers/welcome.php -> application/controllers/Welcome.php</div></blockquote>
- <p>Models:</p>
- <blockquote>
- <div>application/models/misc_model.php -> application/models/Misc_model.php</div></blockquote>
- <p>Please note that this DOES NOT affect directories, configuration files, views,
- helpers, hooks and anything else - it is only applied to classes.</p>
- <p>You must now follow just one simple rule - class names in Ucfirst and everything else
- in lowercase.</p>
- </div>
- <div class="section" id="step-3-replace-config-mimes-php">
- <h2>Step 3: Replace config/mimes.php<a class="headerlink" href="#step-3-replace-config-mimes-php" title="Permalink to this headline">¶</a></h2>
- <p>This config file has been updated to contain more user mime-types, please copy
- it to <em>application/config/mimes.php</em>.</p>
- </div>
- <div class="section" id="step-4-remove-autoload-core-from-your-config-autoload-php">
- <h2>Step 4: Remove $autoload[‘core’] from your config/autoload.php<a class="headerlink" href="#step-4-remove-autoload-core-from-your-config-autoload-php" title="Permalink to this headline">¶</a></h2>
- <p>Use of the <code class="docutils literal"><span class="pre">$autoload['core']</span></code> 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 <code class="docutils literal"><span class="pre">$autoload['libraries']</span></code> instead.</p>
- </div>
- <div class="section" id="step-5-move-your-log-class-overrides-or-extensions">
- <h2>Step 5: Move your Log class overrides or extensions<a class="headerlink" href="#step-5-move-your-log-class-overrides-or-extensions" title="Permalink to this headline">¶</a></h2>
- <p>The Log Class is considered as a “core” class and is now located in the
- <strong>system/core/</strong> directory. Therefore, in order for your Log class overrides
- or extensions to work, you need to move them to <strong>application/core/</strong>:</p>
- <blockquote>
- <div>application/libraries/Log.php -> application/core/Log.php
- application/libraries/MY_Log.php -> application/core/MY_Log.php</div></blockquote>
- </div>
- <div class="section" id="step-6-update-your-session-library-usage">
- <h2>Step 6: Update your Session library usage<a class="headerlink" href="#step-6-update-your-session-library-usage" title="Permalink to this headline">¶</a></h2>
- <p>The <a class="reference internal" href="../libraries/sessions.html"><span class="doc">Session Library</span></a> has been completely
- re-written in CodeIgniter 3 and now comes with a bunch of new features,
- but that also means that there are changes that you should make …</p>
- <p>Most notably, the library now uses separate storage drivers instead of
- always relying on (encrypted) cookies.
- In fact, cookies as storage have now been removed and you must always use
- some kind of server-side storage engine, with the file-system being the
- default option.</p>
- <p>The Session Class now utilizes PHP’s own mechanisms for building custom
- session handlers, which also means that your session data is now
- accessible via the <code class="docutils literal"><span class="pre">$_SESSION</span></code> superglobal (though, we’ve kept the
- possibility to use it as “userdata”, like you’ve done until now).</p>
- <p>A few configuration options have been removed and a few have been added.
- You should really read the whole <a class="reference internal" href="../libraries/sessions.html"><span class="doc">Session library manual</span></a> for the details, but here’s a short list of changes
- that you should make:</p>
- <blockquote>
- <div><ul>
- <li><p class="first">Set your <code class="docutils literal"><span class="pre">$config['sess_driver']</span></code> value</p>
- <p>It will default to ‘files’, unless you’ve previously used
- <code class="docutils literal"><span class="pre">$config['sess_use_database']</span></code>, in which case it will be set to
- ‘database’.</p>
- </li>
- <li><p class="first">Set a <code class="docutils literal"><span class="pre">$config['sess_save_path']</span></code> value</p>
- <p>For the ‘database’ driver, a fallback to <code class="docutils literal"><span class="pre">$config['sess_table_name']</span></code>
- is in place, but otherwise requires you to read the manual for the
- specific driver of your choice.</p>
- </li>
- <li><p class="first">Update your <code class="docutils literal"><span class="pre">ci_sessions</span></code> table (‘database’ driver only)</p>
- <p>The table structure has changed a bit, and more specifically:</p>
- <blockquote>
- <div><ul class="simple">
- <li><code class="docutils literal"><span class="pre">session_id</span></code> field is renamed to <code class="docutils literal"><span class="pre">id</span></code></li>
- <li><code class="docutils literal"><span class="pre">user_agent</span></code> field is dropped</li>
- <li><code class="docutils literal"><span class="pre">user_data</span></code> field is renamed to <code class="docutils literal"><span class="pre">data</span></code> and under MySQL is now of type BLOB</li>
- <li><code class="docutils literal"><span class="pre">last_activity</span></code> field is renamed to <code class="docutils literal"><span class="pre">timestamp</span></code></li>
- </ul>
- </div></blockquote>
- <p>This is accompanied by a slight change in the table indexes too, so
- please read the manual about the <a class="reference external" href="../libraries/sessions.html#database-driver">Session Database Driver</a> for more information.</p>
- <div class="admonition important">
- <p class="first admonition-title">Important</p>
- <p class="last">Only MySQL and PostgreSQL are officially supported
- now. Other databases may still work, but due to lack of advisory
- locking features, they are unsafe for concurrent requests and
- you should consider using another driver instead.</p>
- </div>
- </li>
- <li><p class="first">Remove <code class="docutils literal"><span class="pre">$config['sess_match_useragent']</span></code></p>
- <p>The user-agent string is input supplied by the user’s browser, or in
- other words: client side input. As such, it is an ineffective feature
- and hence why it has been removed.</p>
- </li>
- <li><p class="first">Remove <code class="docutils literal"><span class="pre">$config['sess_encrypt_cookie']</span></code></p>
- <p>As already noted, the library no longer uses cookies as a storage
- mechanism, which renders this option useless.</p>
- </li>
- <li><p class="first">Remove <code class="docutils literal"><span class="pre">$config['sess_expire_on_close']</span></code></p>
- <p>This option is still usable, but only for backwards compatibility
- purposes and it should be otherwise removed. The same effect is
- achieved by setting <code class="docutils literal"><span class="pre">$config['sess_expiration']</span></code> to 0.</p>
- </li>
- <li><p class="first">Check “flashdata” for collisions with “userdata”</p>
- <p>Flashdata is now just regular “userdata”, only marked for deletion on
- the next request. In other words: you can’t have both “userdata” and
- “flashdata” with the same name, because it’s the same thing.</p>
- </li>
- <li><p class="first">Check usage of session metadata</p>
- <p>Previously, you could access the ‘session_id’, ‘ip_address’,
- ‘user_agent’ and ‘last_activity’ metadata items as userdata.
- This is no longer possible, and you should read the notes about
- <a class="reference external" href="../libraries/sessions.html#accessing-session-metadata">Session Metadata</a>
- if your application relies on those values.</p>
- </li>
- <li><p class="first">Check <code class="docutils literal"><span class="pre">unset_userdata()</span></code> usage</p>
- <p>Previously, this method used to accept an associative array of
- <code class="docutils literal"><span class="pre">'key'</span> <span class="pre">=></span> <span class="pre">'dummy</span> <span class="pre">value'</span></code> pairs for unsetting multiple keys. That
- however makes no sense and you now have to pass <em>only</em> the keys, as
- the elements of an array.</p>
- <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="c1">// Old</span>
- <span class="nv">$this</span><span class="o">-></span><span class="na">session</span><span class="o">-></span><span class="na">unset_userdata</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'item'</span> <span class="o">=></span> <span class="s1">''</span><span class="p">,</span> <span class="s1">'item2'</span> <span class="o">=></span> <span class="s1">''</span><span class="p">));</span>
- <span class="c1">// New</span>
- <span class="nv">$this</span><span class="o">-></span><span class="na">session</span><span class="o">-></span><span class="na">unset_userdata</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'item'</span><span class="p">,</span> <span class="s1">'item2'</span><span class="p">));</span>
- </pre></div>
- </div>
- </li>
- </ul>
- </div></blockquote>
- <p>Finally, if you have written a Session extension, you must now move it to
- the <em>application/libraries/Session/</em> directory, although chances are that
- it will now also have to be re-factored.</p>
- </div>
- <div class="section" id="step-7-update-your-config-database-php">
- <h2>Step 7: Update your config/database.php<a class="headerlink" href="#step-7-update-your-config-database-php" title="Permalink to this headline">¶</a></h2>
- <p>Due to 3.0.0’s renaming of Active Record to Query Builder, inside your
- <strong>config/database.php</strong>, you will need to rename the <code class="docutils literal"><span class="pre">$active_record</span></code>
- variable to <code class="docutils literal"><span class="pre">$query_builder</span></code>:</p>
- <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$active_group</span> <span class="o">=</span> <span class="s1">'default'</span><span class="p">;</span>
- <span class="c1">// $active_record = TRUE;</span>
- <span class="nv">$query_builder</span> <span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span>
- </pre></div>
- </div>
- </div>
- <div class="section" id="step-8-replace-your-error-templates">
- <h2>Step 8: Replace your error templates<a class="headerlink" href="#step-8-replace-your-error-templates" title="Permalink to this headline">¶</a></h2>
- <p>In CodeIgniter 3.0, the error templates are now considered as views and have been moved to the
- <em>application/views/errors</em> directory.</p>
- <p>Furthermore, we’ve added support for CLI error templates in plain-text format that unlike HTML,
- is suitable for the command line. This of course requires another level of separation.</p>
- <p>It is safe to move your old templates from <em>application/errors</em> to <em>application/views/errors/html</em>,
- but you’ll have to copy the new <em>application/views/errors/cli</em> directory from the CodeIgniter archive.</p>
- </div>
- <div class="section" id="step-9-update-your-config-routes-php-file">
- <h2>Step 9: Update your config/routes.php file<a class="headerlink" href="#step-9-update-your-config-routes-php-file" title="Permalink to this headline">¶</a></h2>
- <div class="section" id="routes-containing-any">
- <h3>Routes containing :any<a class="headerlink" href="#routes-containing-any" title="Permalink to this headline">¶</a></h3>
- <p>Historically, CodeIgniter has always provided the <strong>:any</strong> wildcard in
- routing, with the intention of providing a way to match any character
- <strong>within</strong> an URI segment.</p>
- <p>However, the <strong>:any</strong> wildcard is actually just an alias for a regular
- expression and used to be executed in that manner as <strong>.+</strong>. This is
- considered a bug, as it also matches the / (forward slash) character, which
- is the URI segment delimiter and that was never the intention.</p>
- <p>In CodeIgniter 3, the <strong>:any</strong> wildcard will now represent <strong>[^/]+</strong>, so
- that it will not match a forward slash.</p>
- <p>There are certainly many developers that have utilized this bug as an actual
- feature. If you’re one of them and want to match a forward slash, please use
- the <strong>.+</strong> regular expression:</p>
- <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="p">(</span><span class="o">.+</span><span class="p">)</span> <span class="c1">// matches ANYTHING</span>
- <span class="p">(</span><span class="o">:</span><span class="nx">any</span><span class="p">)</span> <span class="c1">// matches any character, except for '/'</span>
- </pre></div>
- </div>
- </div>
- <div class="section" id="directories-and-default-controller-404-override">
- <h3>Directories and ‘default_controller’, ‘404_override’<a class="headerlink" href="#directories-and-default-controller-404-override" title="Permalink to this headline">¶</a></h3>
- <p>As you should know, the <code class="docutils literal"><span class="pre">$route['default_controller']</span></code> and
- <code class="docutils literal"><span class="pre">$route['404_override']</span></code> settings accept not only a controller name, but
- also <em>controller/method</em> pairs. However, a bug in the routing logic has
- made it possible for some users to use that as <em>directory/controller</em>
- instead.</p>
- <p>As already said, this behavior was incidental and was never intended, nor
- documented. If you’ve relied on it, your application will break with
- CodeIgniter 3.0.</p>
- <p>Another notable change in version 3 is that ‘default_controller’ and
- ‘404_override’ are now applied <em>per directory</em>. To explain what this means,
- let’s take the following example:</p>
- <div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$route</span><span class="p">[</span><span class="s1">'default_controller'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'main'</span><span class="p">;</span>
- </pre></div>
- </div>
- <p>Now, assuming that your website is located at <em>example.com</em>, you already
- know that if a user visits <code class="docutils literal"><span class="pre">http://example.com/</span></code>, the above setting will
- cause your ‘Main’ controller to be loaded.</p>
- <p>However, what happens if you have an <em>application/controllers/admin/</em>
- directory and the user visits <code class="docutils literal"><span class="pre">http://example.com/admin/</span></code>?
- In CodeIgniter 3, the router will loo…