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diff --git a/user_guide/general/alternative_php.html b/user_guide/general/alternative_php.html new file mode 100644 index 000000000..381405310 --- /dev/null +++ b/user_guide/general/alternative_php.html @@ -0,0 +1,567 @@ + + +<!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>Alternate PHP Syntax for View Files — 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" 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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">General Topics</a> »</li> + + <li>Alternate PHP Syntax for View Files</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="alternate-php-syntax-for-view-files"> +<h1>Alternate PHP Syntax for View Files<a class="headerlink" href="#alternate-php-syntax-for-view-files" title="Permalink to this headline">¶</a></h1> +<p>If you do not utilize CodeIgniter’s <a class="reference internal" href="../libraries/parser.html"><em>template +engine</em></a>, you’ll be using pure PHP in your +View files. To minimize the PHP code in these files, and to make it +easier to identify the code blocks it is recommended that you use PHPs +alternative syntax for control structures and short tag echo statements. +If you are not familiar with this syntax, it allows you to eliminate the +braces from your code, and eliminate “echo” statements.</p> +<div class="section" id="automatic-short-tag-support"> +<h2>Automatic Short Tag Support<a class="headerlink" href="#automatic-short-tag-support" title="Permalink to this headline">¶</a></h2> +<div class="admonition note"> +<p class="first admonition-title">Note</p> +<p class="last">If you find that the syntax described in this page does not +work on your server it might be that “short tags” are disabled in your +PHP ini file. CodeIgniter will optionally rewrite short tags on-the-fly, +allowing you to use that syntax even if your server doesn’t support it. +This feature can be enabled in your <em>config/config.php</em> file.</p> +</div> +<p>Please note that if you do use this feature, if PHP errors are +encountered in your <strong>view files</strong>, the error message and line number +will not be accurately shown. Instead, all errors will be shown as +<tt class="docutils literal"><span class="pre">eval()</span></tt> errors.</p> +</div> +<div class="section" id="alternative-echos"> +<h2>Alternative Echos<a class="headerlink" href="#alternative-echos" title="Permalink to this headline">¶</a></h2> +<p>Normally to echo, or print out a variable you would do this:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">echo</span> <span class="nv">$variable</span><span class="p">;</span> <span class="cp">?></span> +</pre></div> +</div> +<p>With the alternative syntax you can instead do it this way:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?=</span><span class="nv">$variable</span><span class="cp">?></span> +</pre></div> +</div> +</div> +<div class="section" id="alternative-control-structures"> +<h2>Alternative Control Structures<a class="headerlink" href="#alternative-control-structures" title="Permalink to this headline">¶</a></h2> +<p>Controls structures, like if, for, foreach, and while can be written in +a simplified format as well. Here is an example using <tt class="docutils literal"><span class="pre">foreach</span></tt>:</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">$todo</span> <span class="k">as</span> <span class="nv">$item</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">$item</span><span class="cp">?></span><span class="p"></</span><span class="nt">li</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">endforeach</span><span class="p">;</span> <span class="cp">?></span> + +<span class="p"></</span><span class="nt">ul</span><span class="p">></span> +</pre></div> +</div> +<p>Notice that there are no braces. Instead, the end brace is replaced with +<tt class="docutils literal"><span class="pre">endforeach</span></tt>. Each of the control structures listed above has a similar +closing syntax: <tt class="docutils literal"><span class="pre">endif</span></tt>, <tt class="docutils literal"><span class="pre">endfor</span></tt>, <tt class="docutils literal"><span class="pre">endforeach</span></tt>, and <tt class="docutils literal"><span class="pre">endwhile</span></tt></p> +<p>Also notice that instead of using a semicolon after each structure +(except the last one), there is a colon. This is important!</p> +<p>Here is another example, using <tt class="docutils literal"><span class="pre">if</span></tt>/<tt class="docutils literal"><span class="pre">elseif</span></tt>/<tt class="docutils literal"><span class="pre">else</span></tt>. Notice the colons:</p> +<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="o"><?</span><span class="nx">php</span> <span class="k">if</span> <span class="p">(</span><span class="nv">$username</span> <span class="o">===</span> <span class="s1">'sally'</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi Sally<span class="p"></</span><span class="nt">h3</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">elseif</span> <span class="p">(</span><span class="nv">$username</span> <span class="o">===</span> <span class="s1">'joe'</span><span class="p">)</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi Joe<span class="p"></</span><span class="nt">h3</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">else</span><span class="o">:</span> <span class="cp">?></span> + + <span class="p"><</span><span class="nt">h3</span><span class="p">></span>Hi unknown user<span class="p"></</span><span class="nt">h3</span><span class="p">></span> + +<span class="cp"><?php</span> <span class="k">endif</span><span class="p">;</span> <span class="cp">?></span> +</pre></div> +</div> +</div> +</div> + + + </div> + <footer> + + <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> + + <a href="security.html" class="btn btn-neutral float-right" title="Security">Next <span class="fa fa-arrow-circle-right"></span></a> + + + <a href="environments.html" class="btn btn-neutral" title="Handling Multiple Environments"><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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