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    <p>The easiest way would be to pass off value structure to your template renderer. This will keep you from being tempted to doing too much logic within the template itself. </p> <p>For example - First off create an interface for your renderable classes</p> <pre><code>class Renderable { public function getViewData(); } </code></pre> <p>Then make your student and Course classes conform to the interface . </p> <pre><code>class Student implements Renderable{ private $id; private $name; /** * Courses student is attending * @var Course[] */ private $courses = array(); private $numberOfAttendingCourses; public function getViewData(){ $dat = array("id"=&gt;$this-&gt;id, "name"=&gt;$this-&gt;name, "courses"=&gt;array()); foreach($this-&gt;courses as $course){ $dat["courses"][] = $course-&gt;getViewData(); } $dat["numCourses"] = count($dat["courses"]); return $dat; } } class Course implements Renderable{ private $code; private $name; public function fetchViewData(){ return array("code"=&gt;$this-&gt;code, "name"=&gt;$this-&gt;name); } } </code></pre> <p>The create a template parser.</p> <pre><code>class Template { public function render($templateFile, array $data){ if ($data instanceof Renderable){ $data = $data-&gt;getViewData(); } extract ($data); ob_start(); include($templateFile); ob_get_clean(); } } </code></pre> <p>Then a simple template for your markup</p> <pre><code>&lt;ul&gt; &lt;li&gt;&lt;?= htmlspecialchars($name) ?&gt; (ID: &lt;?= htmlspecialchars($id) ?&gt;) &lt;ul&gt; &lt;?php foreach($courses as $course): ?&gt; &lt;li&gt;&lt;?= htmlspecialchars($course["code"]) ?&gt; (&lt;?= htmlspecialchars($course["code"]) ?&gt;)&lt;/li&gt; &lt;?php endforeach; ?&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; </code></pre> <p>Then once you have a valid Student object you can simply</p> <pre><code>$template = new Template(); $template-&gt;render("/path/to/template.phtml", $student-&gt;fetchViewData()); </code></pre> <p>This should also make it very simple for you to develop and test your templates as you would be able to use a serviceable array instead of going and creating a Student and a bunch of Course objects. </p>
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    1. COElegant. Could the same technique be used for storing those objects in the db?
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    2. CO@namesnik I don't see why not.
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    3. COWhy do you do `if (!is_array($data)){`, when you can enforce this to be an array, like this `render($templateFile, array $data)`??
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