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| author | Andrey Andreev <narf@devilix.net> | 2017-06-19 10:33:58 +0200 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2017-06-19 10:33:58 +0200 |
| commit | 6c7a4266410070d30f8f6bcdf9c9e67f3d6478e3 (patch) | |
| tree | f0aab8f6f5e781d5947b1a5553b6648eb7b7a4ab /user_guide/overview/at_a_glance.html | |
| parent | 2459285b91d6fc4f5099f9f597529cce1059cb33 (diff) | |
[ci skip] 3.1.5 release
Diffstat (limited to 'user_guide/overview/at_a_glance.html')
| -rw-r--r-- | user_guide/overview/at_a_glance.html | 600 |
1 files changed, 600 insertions, 0 deletions
diff --git a/user_guide/overview/at_a_glance.html b/user_guide/overview/at_a_glance.html new file mode 100644 index 000000000..d4d2115b1 --- /dev/null +++ b/user_guide/overview/at_a_glance.html @@ -0,0 +1,600 @@ + + +<!DOCTYPE html> +<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> +<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1.0"> + + <title>CodeIgniter at a Glance — CodeIgniter 3.1.5 documentation</title> + + + + + <link rel="shortcut icon" href="../_static/ci-icon.ico"/> + + + + <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'> + + + + + + + + + + <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" /> + + + + <link rel="top" title="CodeIgniter 3.1.5 documentation" href="../index.html"/> + 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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> +<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li> +<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li> +<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"> + <i data-toggle="wy-nav-top" class="fa fa-bars"></i> + <a href="../index.html">CodeIgniter</a> + </nav> + + + + <div class="wy-nav-content"> + <div class="rst-content"> + <div role="navigation" aria-label="breadcrumbs navigation"> + <ul class="wy-breadcrumbs"> + <li><a href="../index.html">Docs</a> »</li> + + <li><a href="index.html">CodeIgniter Overview</a> »</li> + + <li>CodeIgniter at a Glance</li> + <li class="wy-breadcrumbs-aside"> + + </li> + <div style="float:right;margin-left:5px;" id="closeMe"> + <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" /> + </div> + </ul> + <hr/> +</div> + <div role="main" class="document"> + + <div class="section" id="codeigniter-at-a-glance"> +<h1>CodeIgniter at a Glance<a class="headerlink" href="#codeigniter-at-a-glance" title="Permalink to this headline">¶</a></h1> +<div class="section" id="codeigniter-is-an-application-framework"> +<h2>CodeIgniter is an Application Framework<a class="headerlink" href="#codeigniter-is-an-application-framework" title="Permalink to this headline">¶</a></h2> +<p>CodeIgniter is a toolkit for people who build web applications using +PHP. Its goal is to enable you to develop projects much faster than you +could if you were writing code from scratch, by providing a rich set of +libraries for commonly needed tasks, as well as a simple interface and +logical structure to access these libraries. CodeIgniter lets you +creatively focus on your project by minimizing the amount of code needed +for a given task.</p> +</div> +<div class="section" id="codeigniter-is-free"> +<h2>CodeIgniter is Free<a class="headerlink" href="#codeigniter-is-free" title="Permalink to this headline">¶</a></h2> +<p>CodeIgniter is licensed under the MIT license so you can use it however +you please. For more information please read the +<a class="reference internal" href="../license.html"><em>license agreement</em></a>.</p> +</div> +<div class="section" id="codeigniter-is-light-weight"> +<h2>CodeIgniter is Light Weight<a class="headerlink" href="#codeigniter-is-light-weight" title="Permalink to this headline">¶</a></h2> +<p>Truly light weight. The core system requires only a few very small +libraries. This is in stark contrast to many frameworks that require +significantly more resources. Additional libraries are loaded +dynamically upon request, based on your needs for a given process, so +the base system is very lean and quite fast.</p> +</div> +<div class="section" id="codeigniter-is-fast"> +<h2>CodeIgniter is Fast<a class="headerlink" href="#codeigniter-is-fast" title="Permalink to this headline">¶</a></h2> +<p>Really fast. We challenge you to find a framework that has better +performance than CodeIgniter.</p> +</div> +<div class="section" id="codeigniter-uses-m-v-c"> +<h2>CodeIgniter Uses M-V-C<a class="headerlink" href="#codeigniter-uses-m-v-c" title="Permalink to this headline">¶</a></h2> +<p>CodeIgniter uses the Model-View-Controller approach, which allows great +separation between logic and presentation. This is particularly good for +projects in which designers are working with your template files, as the +code these files contain will be minimized. We describe MVC in more +detail on its own page.</p> +</div> +<div class="section" id="codeigniter-generates-clean-urls"> +<h2>CodeIgniter Generates Clean URLs<a class="headerlink" href="#codeigniter-generates-clean-urls" title="Permalink to this headline">¶</a></h2> +<p>The URLs generated by CodeIgniter are clean and search-engine friendly. +Rather than using the standard “query string” approach to URLs that is +synonymous with dynamic systems, CodeIgniter uses a segment-based +approach:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nx">example</span><span class="o">.</span><span class="nx">com</span><span class="o">/</span><span class="nx">news</span><span class="o">/</span><span class="nx">article</span><span class="o">/</span><span class="mi">345</span> +</pre></div> +</div> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">By default the <em>index.php</em> file is included in the URL but it can +be removed using a simple <em>.htaccess</em> file.</p> +</div> +</div> +<div class="section" id="codeigniter-packs-a-punch"> +<h2>CodeIgniter Packs a Punch<a class="headerlink" href="#codeigniter-packs-a-punch" title="Permalink to this headline">¶</a></h2> +<p>CodeIgniter comes with full-range of libraries that enable the most +commonly needed web development tasks, like accessing a database, +sending email, validating form data, maintaining sessions, manipulating +images, working with XML-RPC data and much more.</p> +</div> +<div class="section" id="codeigniter-is-extensible"> +<h2>CodeIgniter is Extensible<a class="headerlink" href="#codeigniter-is-extensible" title="Permalink to this headline">¶</a></h2> +<p>The system can be easily extended through the use of your own libraries, +helpers, or through class extensions or system hooks.</p> +</div> +<div class="section" id="codeigniter-does-not-require-a-template-engine"> +<h2>CodeIgniter Does Not Require a Template Engine<a class="headerlink" href="#codeigniter-does-not-require-a-template-engine" title="Permalink to this headline">¶</a></h2> +<p>Although CodeIgniter <em>does</em> come with a simple template parser that can +be optionally used, it does not force you to use one. Template engines +simply can not match the performance of native PHP, and the syntax that +must be learned to use a template engine is usually only marginally +easier than learning the basics of PHP. Consider this block of PHP code:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">ul</span><span class="o">></span> +<span class="o"><?</span><span class="nx">php</span> <span class="k">foreach</span> <span class="p">(</span><span class="nv">$addressbook</span> <span class="k">as</span> <span class="nv">$name</span><span class="p">)</span><span class="o">:</span><span class="cp">?></span> + <span class="p"><</span><span class="nt">li</span><span class="p">></span><span class="cp"><?</span><span class="o">=</span><span class="nv">$name</span><span class="cp">?></span><span class="p"></</span><span class="nt">li</span><span class="p">></span> +<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> +<span class="p"></</span><span class="nt">ul</span><span class="p">></span> +</pre></div> +</div> +<p>Contrast this with the pseudo-code used by a template engine:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><</span><span class="nx">ul</span><span class="o">></span> +<span class="p">{</span><span class="k">foreach</span> <span class="nx">from</span><span class="o">=</span><span class="nv">$addressbook</span> <span class="nx">item</span><span class="o">=</span><span class="s2">"name"</span><span class="p">}</span> + <span class="o"><</span><span class="nx">li</span><span class="o">></span><span class="p">{</span><span class="nv">$name</span><span class="p">}</span><span class="o"></</span><span class="nx">li</span><span class="o">></span> +<span class="p">{</span><span class="o">/</span><span class="k">foreach</span><span class="p">}</span> +<span class="o"></</span><span class="nx">ul</span><span class="o">></span> +</pre></div> +</div> +<p>Yes, the template engine example is a bit cleaner, but it comes at the +price of performance, as the pseudo-code must be converted back into PHP +to run. Since one of our goals is <em>maximum performance</em>, we opted to not +require the use of a template engine.</p> +</div> +<div class="section" id="codeigniter-is-thoroughly-documented"> +<h2>CodeIgniter is Thoroughly Documented<a class="headerlink" href="#codeigniter-is-thoroughly-documented" title="Permalink to this headline">¶</a></h2> +<p>Programmers love to code and hate to write documentation. We’re no +different, of course, but since documentation is <strong>as important</strong> as the +code itself, we are committed to doing it. Our source code is extremely +clean and well commented as well.</p> +</div> +<div class="section" id="codeigniter-has-a-friendly-community-of-users"> +<h2>CodeIgniter has a Friendly Community of Users<a class="headerlink" href="#codeigniter-has-a-friendly-community-of-users" title="Permalink to this headline">¶</a></h2> +<p>Our growing community of users can be seen actively participating in our +<a class="reference external" href="http://forum.codeigniter.com/">Community Forums</a>.</p> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="features.html" class="btn btn-neutral float-right" title="CodeIgniter Features">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="getting_started.html" class="btn btn-neutral" title="Getting Started With CodeIgniter"><span class="fa fa-arrow-circle-left"></span> Previous</a> + + </div> + + + <hr/> + + <div role="contentinfo"> + <p> + © Copyright 2014 - 2017, British Columbia Institute of Technology. + Last updated on Jun 19, 2017. + </p> + </div> + + Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. + +</footer> + </div> + </div> + + </section> + + </div> + + + + + + <script type="text/javascript"> + var DOCUMENTATION_OPTIONS = { + URL_ROOT:'../', + VERSION:'3.1.5', + COLLAPSE_INDEX:false, + FILE_SUFFIX:'.html', + HAS_SOURCE: false + }; + </script> + <script type="text/javascript" src="../_static/jquery.js"></script> + <script type="text/javascript" src="../_static/underscore.js"></script> + <script type="text/javascript" src="../_static/doctools.js"></script> + + + + + + <script type="text/javascript" src="../_static/js/theme.js"></script> + + + + + <script type="text/javascript"> + jQuery(function () { + SphinxRtdTheme.StickyNav.enable(); + }); + </script> + + +</body> +</html>
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