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diff --git a/zend/documentation/manual/core/en/performance.view.html b/zend/documentation/manual/core/en/performance.view.html new file mode 100644 index 0000000..8d6cb11 --- /dev/null +++ b/zend/documentation/manual/core/en/performance.view.html @@ -0,0 +1,454 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<head> + <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> + <title>View Rendering - Zend Framework Manual</title> + +</head> +<body> +<table width="100%"> + <tr valign="top"> + <td width="85%"> + <table width="100%"> + <tr> + <td width="25%" style="text-align: left;"> + <a href="performance.localization.html">Internationalization (i18n) and Localization (l10n)</a> + </td> + + <td width="50%" style="text-align: center;"> + <div class="up"><span class="up"><a href="performance.html">Zend Gdata Performance Guide</a></span><br /> + <span class="home"><a href="manual.html">Programmer's Reference Guide</a></span></div> + </td> + + <td width="25%" style="text-align: right;"> + <div class="next" style="text-align: right; float: right;"><a href="copyrights.html">Copyright Information</a></div> + </td> + </tr> + </table> +<hr /> +<div id="performance.view" class="section"><div class="info"><h1 class="title">View Rendering</h1></div> + + + <p class="para"> + When using Zend Framework's <acronym class="acronym">MVC</acronym> layer, chances are you will be using + <span class="classname">Zend_View</span>. <span class="classname">Zend_View</span> is performs well + compared to other view or templating engines; since view scripts + are written in <acronym class="acronym">PHP</acronym>, you do not incur the overhead of compiling custom + markup to <acronym class="acronym">PHP</acronym>, nor do you need to worry that the compiled + <acronym class="acronym">PHP</acronym> is not optimized. However, <span class="classname">Zend_View</span> presents + its own issues: extension is done via overloading (view helpers), and a number of view + helpers, while carrying out key functionality do so with a performance + cost. + </p> + + <div class="section" id="performance.view.pluginloader" name="performance.view.pluginloader"><div class="info"><h1 class="title">How can I speed up resolution of view helpers?</h1></div> + + + <p class="para"> + Most <span class="classname">Zend_View</span> "methods" are actually provided via + overloading to the helper system. This provides important flexibility to + <span class="classname">Zend_View</span>; instead of needing to extend + <span class="classname">Zend_View</span> and provide all the helper methods you may + utilize in your application, you can define your helper methods in separate + classes and consume them at will as if they were direct methods of + <span class="classname">Zend_View</span>. This keeps the view object itself relatively + thin, and ensures that objects are created only when needed. + </p> + + <p class="para"> + Internally, <span class="classname">Zend_View</span> uses the <a href="" class="link">PluginLoader</a> to look + up helper classes. This means that for each helper you call, + <span class="classname">Zend_View</span> needs to pass the helper name to the + PluginLoader, which then needs to determine the class name, load the + class file if necessary, and then return the class name so it may be + instantiated. Subsequent uses of the helper are much faster, as + <span class="classname">Zend_View</span> keeps an internal registry of loaded helpers, + but if you use many helpers, the calls add up. + </p> + + <p class="para"> + The question, then, is: how can you speed up helper resolution? + </p> + + <div class="section" id="performance.view.pluginloader.cache" name="performance.view.pluginloader.cache"><div class="info"><h1 class="title">Use the PluginLoader include file cache</h1></div> + + + <p class="para"> + The simplest, cheapest solution is the same as for <a href="performance.classloading.html#performance.classloading.pluginloader" class="link">general + PluginLoader performance</a>: <a href="" class="link">use + the PluginLoader include file cache</a>. Anecdotal + evidence has shown this technique to provide a 25-30% + performance gain on systems without an opcode cache, and a + 40-65% gain on systems with an opcode cache. + </p> + </div> + + <div class="section" id="performance.view.pluginloader.extend" name="performance.view.pluginloader.extend"><div class="info"><h1 class="title">Extend Zend_View to provide often used helper methods</h1></div> + + + <p class="para"> + Another solution for those seeking to tune performance even + further is to extend <span class="classname">Zend_View</span> to manually add the + helper methods they most use in their application. Such helper + methods may simply manually instantiate the appropriate helper + class and proxy to it, or stuff the full helper implementation + into the method. + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;">class</span> My_View <span style="color: #000000; font-weight: bold;">extends</span> Zend_View</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #808080; font-style: italic;">/**</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @var array Registry of helper classes used</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> */</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> protected <span style="color: #0000ff;">$_localHelperObjects</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> </div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #808080; font-style: italic;">/**</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * Proxy to url view helper</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> *</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @param array $urlOptions Options passed to the assemble method</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * of the Route object.</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @param mixed $name The name of a Route to use. If null it will</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * use the current Route</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @param bool $reset Whether or not to reset the route defaults</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * with those provided</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @return string Url for the link href attribute.</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> */</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> url<span style="color: #66cc66;">(</span><a href="http://www.php.net/array"><span style="color: #000066;">array</span></a> <span style="color: #0000ff;">$urlOptions</span> = <a href="http://www.php.net/array"><span style="color: #000066;">array</span></a><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>, <span style="color: #0000ff;">$name</span> = <span style="color: #000000; font-weight: bold;">null</span>,</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$reset</span> = <span style="color: #000000; font-weight: bold;">false</span>, <span style="color: #0000ff;">$encode</span> = <span style="color: #000000; font-weight: bold;">true</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span>!<a href="http://www.php.net/array_key_exists"><span style="color: #000066;">array_key_exists</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'url'</span>, <span style="color: #0000ff;">$this</span>->_localHelperObjects<span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>->_localHelperObjects<span style="color: #66cc66;">[</span><span style="color: #ff0000;">'url'</span><span style="color: #66cc66;">]</span> = <span style="color: #000000; font-weight: bold;">new</span> Zend_View_Helper_Url<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>->_localHelperObjects<span style="color: #66cc66;">[</span><span style="color: #ff0000;">'url'</span><span style="color: #66cc66;">]</span>-><span style="color: #006600;">setView</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$this</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$helper</span> = <span style="color: #0000ff;">$this</span>->_localHelperObjects<span style="color: #66cc66;">[</span><span style="color: #ff0000;">'url'</span><span style="color: #66cc66;">]</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$helper</span>-><span style="color: #006600;">url</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$urlOptions</span>, <span style="color: #0000ff;">$name</span>, <span style="color: #0000ff;">$reset</span>, <span style="color: #0000ff;">$encode</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> </div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #808080; font-style: italic;">/**</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * Echo a message</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> *</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * Direct implementation.</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> *</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @param string $string</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> * @return string</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;"> */</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> message<span style="color: #66cc66;">(</span><span style="color: #0000ff;">$string</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">return</span> <span style="color: #ff0000;">"<h1>"</span> . <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">escape</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$message</span><span style="color: #66cc66;">)</span> . <span style="color: #ff0000;">"</h1><span style="color: #000099; font-weight: bold;">\n</span>"</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">}</span></div></li></ol></div></div></div> + + + <p class="para"> + Either way, this technique will substantially reduce the + overhead of the helper system by avoiding calls to the + PluginLoader entirely, and either benefiting from autoloading or + bypassing it altogether. + </p> + </div> + </div> + + <div class="section" id="performance.view.partial" name="performance.view.partial"><div class="info"><h1 class="title">How can I speed up view partials?</h1></div> + + + <p class="para"> + Those who use partials heavily and who profile their applications + will often immediately notice that the <span class="methodname">partial()</span> view + helper incurs a lot of overhead, due to the need to clone the view + object. Is it possible to speed this up? + </p> + + <div class="section" id="performance.view.partial.render" name="performance.view.partial.render"><div class="info"><h1 class="title">Use partial() only when really necessary</h1></div> + + + <p class="para"> + The <span class="methodname">partial()</span> view helper accepts three arguments: + </p> + + <ul class="itemizedlist"> + <li class="listitem"> + <p class="para"> + <var class="varname">$name</var>: the name of the view script to render + </p> + </li> + + <li class="listitem"> + <p class="para"> + <var class="varname">$module</var>: the name of the module in which the + view script resides; or, if no third argument is provided + and this is an array or object, it will be the + <var class="varname">$model</var> argument. + </p> + </li> + + <li class="listitem"> + <p class="para"> + <var class="varname">$model</var>: an array or object to pass to the + partial representing the clean data to assign to the view. + </p> + </li> + </ul> + + <p class="para"> + The power and use of <span class="methodname">partial()</span> come from the second + and third arguments. The <var class="varname">$module</var> argument allows + <span class="methodname">partial()</span> to temporarily add a script path for the + given module so that the partial view script will resolve to + that module; the <var class="varname">$model</var> argument allows you to + explicitly pass variables for use with the partial view. + If you're not passing either argument, <em class="emphasis">use + <span class="methodname">render()</span> instead</em>! + </p> + + <p class="para"> + Basically, unless you are actually passing variables to the + partial and need the clean variable scope, or rendering a view + script from another <acronym class="acronym">MVC</acronym> module, there is no reason to incur the + overhead of <span class="methodname">partial()</span>; instead, use + <span class="classname">Zend_View</span>'s built-in <span class="methodname">render()</span> + method to render the view script. + </p> + </div> + </div> + + <div class="section" id="performance.view.action" name="performance.view.action"><div class="info"><h1 class="title">How can I speed up calls to the action() view helper?</h1></div> + + + <p class="para"> + Version 1.5.0 introduced the <span class="methodname">action()</span> view helper, + which allows you to dispatch an <acronym class="acronym">MVC</acronym> action and capture its rendered + content. This provides an important step towards the <acronym class="acronym">DRY</acronym> principle, + and promotes code reuse. However, as those who profile their + applications will quickly realize, it, too, is an expensive + operation. Internally, the <span class="methodname">action()</span> view helper needs + to clone new request and response objects, invoke the dispatcher, + invoke the requested controller and action, etc. + </p> + + <p class="para"> + How can you speed it up? + </p> + + <div class="section" id="performance.view.action.actionstack" name="performance.view.action.actionstack"><div class="info"><h1 class="title">Use the ActionStack when possible</h1></div> + + + <p class="para"> + Introduced at the same time as the <span class="methodname">action()</span> view + helper, the <a href="" class="link">ActionStack</a> + consists of an action helper and a front controller plugin. + Together, they allow you to push additional actions to invoke + during the dispatch cycle onto a stack. If you are calling + <span class="methodname">action()</span> from your layout view scripts, you may + want to instead use the ActionStack, and render your views to + discrete response segments. As an example, you could write a + <span class="methodname">dispatchLoopStartup()</span> plugin like the following to + add a login form box to each page: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;">class</span> LoginPlugin <span style="color: #000000; font-weight: bold;">extends</span> Zend_Controller_Plugin_Abstract</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> protected <span style="color: #0000ff;">$_stack</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> </div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> dispatchLoopStartup<span style="color: #66cc66;">(</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> Zend_Controller_Request_Abstract <span style="color: #0000ff;">$request</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$stack</span> = <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">getStack</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$loginRequest</span> = <span style="color: #000000; font-weight: bold;">new</span> Zend_Controller_Request_Simple<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$loginRequest</span>-><span style="color: #006600;">setControllerName</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'user'</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> -><span style="color: #006600;">setActionName</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'index'</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> -><span style="color: #006600;">setParam</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'responseSegment'</span>, <span style="color: #ff0000;">'login'</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$stack</span>-><span style="color: #006600;">pushStack</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$loginRequest</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> </div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> getStack<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span><span style="color: #000000; font-weight: bold;">null</span> === <span style="color: #0000ff;">$this</span>->_stack<span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$front</span> = Zend_Controller_Front::<span style="color: #006600;">getInstance</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">if</span> <span style="color: #66cc66;">(</span>!<span style="color: #0000ff;">$front</span>-><span style="color: #006600;">hasPlugin</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'Zend_Controller_Plugin_ActionStack'</span><span style="color: #66cc66;">)</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$stack</span> = <span style="color: #000000; font-weight: bold;">new</span> Zend_Controller_Plugin_ActionStack<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$front</span>-><span style="color: #006600;">registerPlugin</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$stack</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span> <span style="color: #b1b100;">else</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$stack</span> = <span style="color: #0000ff;">$front</span>-><span style="color: #006600;">getPlugin</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'ActionStack'</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>->_stack = <span style="color: #0000ff;">$stack</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$this</span>->_stack;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">}</span></div></li></ol></div></div></div> + + + <p class="para"> + The <span class="methodname">UserController::indexAction()</span> method might then + use the <var class="varname">$responseSegment</var> parameter to indicate which + response segment to render to. In the layout script, you would + then simply render that response segment: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;"><?php</span> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">layout</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>-><span style="color: #006600;">login</span> <span style="color: #000000; font-weight: bold;">?></span></div></li></ol></div></div></div> + + + <p class="para"> + While the ActionStack still requires a dispatch cycle, this is + still cheaper than the <span class="methodname">action()</span> view helper as it + does not need to clone objects and reset internal state. + Additionally, it ensures that all pre and post dispatch plugins are + invoked, which may be of particular concern if you are using + front controller plugins for handling <acronym class="acronym">ACL</acronym>'s to particular + actions. + </p> + </div> + + <div class="section" id="performance.view.action.model" name="performance.view.action.model"><div class="info"><h1 class="title">Favor helpers that query the model over action()</h1></div> + + + <p class="para"> + In most cases, using <span class="methodname">action()</span> is simply overkill. + If you have most business logic nested in your models and are + simply querying the model and passing the results to a view + script, it will typically be faster and cleaner to simply write + a view helper that pulls the model, queries it, and does + something with that information. + </p> + + <p class="para"> + As an example, consider the following controller action and view + script: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;">class</span> BugController <span style="color: #000000; font-weight: bold;">extends</span> Zend_Controller_Action</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> listAction<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$model</span> = <span style="color: #000000; font-weight: bold;">new</span> Bug<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">view</span>-><span style="color: #006600;">bugs</span> = <span style="color: #0000ff;">$model</span>-><span style="color: #006600;">fetchActive</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> </div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #808080; font-style: italic;">// bug/list.phtml:</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color: #000066;">echo</span></a> <span style="color: #ff0000;">"<ul><span style="color: #000099; font-weight: bold;">\n</span>"</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #b1b100;">foreach</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$this</span>-><span style="color: #006600;">bugs</span> <span style="color: #b1b100;">as</span> <span style="color: #0000ff;">$bug</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <a href="http://www.php.net/printf"><span style="color: #000066;">printf</span></a><span style="color: #66cc66;">(</span><span style="color: #ff0000;">"<li><b>%s</b>: %s</li><span style="color: #000099; font-weight: bold;">\n</span>"</span>,</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">escape</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$bug</span>-><span style="color: #006600;">id</span><span style="color: #66cc66;">)</span>,</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">escape</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$bug</span>-><span style="color: #006600;">summary</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><a href="http://www.php.net/echo"><span style="color: #000066;">echo</span></a> <span style="color: #ff0000;">"</ul><span style="color: #000099; font-weight: bold;">\n</span>"</span>;</div></li></ol></div></div></div> + + + <p class="para"> + Using <span class="methodname">action()</span>, you would then invoke it with the + following: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;"><?php</span> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">action</span><span style="color: #66cc66;">(</span><span style="color: #ff0000;">'list'</span>, <span style="color: #ff0000;">'bug'</span><span style="color: #66cc66;">)</span> <span style="color: #000000; font-weight: bold;">?></span></div></li></ol></div></div></div> + + + <p class="para"> + This could be refactored to a view helper that looks like the + following: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;">class</span> My_View_Helper_BugList <span style="color: #000000; font-weight: bold;">extends</span> Zend_View_Helper_Abstract</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #000000; font-weight: bold;">public</span> <span style="color: #000000; font-weight: bold;">function</span> bugList<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$model</span> = <span style="color: #000000; font-weight: bold;">new</span> Bug<span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$html</span> = <span style="color: #ff0000;">"<ul><span style="color: #000099; font-weight: bold;">\n</span>"</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">foreach</span> <span style="color: #66cc66;">(</span><span style="color: #0000ff;">$model</span>-><span style="color: #006600;">fetchActive</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span> <span style="color: #b1b100;">as</span> <span style="color: #0000ff;">$bug</span><span style="color: #66cc66;">)</span> <span style="color: #66cc66;">{</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$html</span> .= <a href="http://www.php.net/sprintf"><span style="color: #000066;">sprintf</span></a><span style="color: #66cc66;">(</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #ff0000;">"<li><b>%s</b>: %s</li><span style="color: #000099; font-weight: bold;">\n</span>"</span>,</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">view</span>-><span style="color: #006600;">escape</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$bug</span>-><span style="color: #006600;">id</span><span style="color: #66cc66;">)</span>,</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">view</span>-><span style="color: #006600;">escape</span><span style="color: #66cc66;">(</span><span style="color: #0000ff;">$bug</span>-><span style="color: #006600;">summary</span><span style="color: #66cc66;">)</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">)</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #0000ff;">$html</span> .= <span style="color: #ff0000;">"</ul><span style="color: #000099; font-weight: bold;">\n</span>"</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #b1b100;">return</span> <span style="color: #0000ff;">$html</span>;</div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"> <span style="color: #66cc66;">}</span></div></li> +<li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #66cc66;">}</span></div></li></ol></div></div></div> + + + <p class="para"> + You would then invoke the helper as follows: + </p> + + <div class="programlisting php"><div class="phpcode"><div class="php" style="font-family: monospace;"><ol><li style="font-family: 'Courier New', Courier, monospace; color: black; font-weight: normal; font-style: normal;"><div style="font-family: 'Courier New', Courier, monospace; font-weight: normal;"><span style="color: #000000; font-weight: bold;"><?php</span> <span style="color: #0000ff;">$this</span>-><span style="color: #006600;">bugList</span><span style="color: #66cc66;">(</span><span style="color: #66cc66;">)</span> <span style="color: #000000; font-weight: bold;">?></span></div></li></ol></div></div></div> + + + <p class="para"> + This has two benefits: it no longer incurs the overhead of the + <span class="methodname">action()</span> view helper, and also presents a more + semantically understandable <acronym class="acronym">API</acronym>. + </p> + </div> + </div> +</div> + <hr /> + + <table width="100%"> + <tr> + <td width="25%" style="text-align: left;"> + <a href="performance.localization.html">Internationalization (i18n) and Localization (l10n)</a> + </td> + + <td width="50%" style="text-align: center;"> + <div class="up"><span class="up"><a href="performance.html">Zend Gdata Performance Guide</a></span><br /> + <span class="home"><a href="manual.html">Programmer's Reference Guide</a></span></div> + </td> + + <td width="25%" style="text-align: right;"> + <div class="next" style="text-align: right; float: right;"><a href="copyrights.html">Copyright Information</a></div> + </td> + </tr> + </table> +</td> + <td style="font-size: smaller;" width="15%"> <style type="text/css"> +#leftbar { + float: left; + width: 186px; + padding: 5px; + font-size: smaller; +} +ul.toc { + margin: 0px 5px 5px 5px; + padding: 0px; +} +ul.toc li { + font-size: 85%; + margin: 1px 0 1px 1px; + padding: 1px 0 1px 11px; + list-style-type: none; + background-repeat: no-repeat; + background-position: center left; +} +ul.toc li.header { + font-size: 115%; + padding: 5px 0px 5px 11px; + border-bottom: 1px solid #cccccc; + margin-bottom: 5px; +} +ul.toc li.active { + font-weight: bold; +} +ul.toc li a { + text-decoration: none; +} +ul.toc li a:hover { + text-decoration: underline; +} +</style> + <ul class="toc"> + <li class="header home"><a href="manual.html">Programmer's Reference Guide</a></li> + <li class="header up"><a href="manual.html">Programmer's Reference Guide</a></li> + <li class="header up"><a href="performance.html">Zend Gdata Performance Guide</a></li> + <li><a href="performance.introduction.html">Introduction</a></li> + <li><a href="performance.classloading.html">Class Loading</a></li> + <li><a href="performance.database.html">Zend_Db Performance</a></li> + <li><a href="performance.localization.html">Internationalization (i18n) and Localization (l10n)</a></li> + <li class="active"><a href="performance.view.html">View Rendering</a></li> + </ul> + </td> + </tr> +</table> +</body> +</html>
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