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POHow to make a recursive treeview collapsible
 

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  1. POHow to make a recursive treeview collapsible
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    <p>I have a recursive treeview which pulls all its information from a database and would like some insight as to how I can make it collapsible. I tried using Jquery and Javascript but neither attempt had any effect. Not sure if was maybe just error on my part or something else.</p> <p>here is my basic code:</p> <pre><code>&lt;body&gt; &lt;?php mysql_connect('localhost', 'root'); mysql_select_db('test'); $qry="SELECT * FROM treeview_items"; $result=mysql_query($qry); $arrayCategories = array(); while($row = mysql_fetch_assoc($result)){ $arrayCategories[$row['id']] = array("parent_id" =&gt; $row['parent_id'], "name" =&gt; $row['title']); } //createTree($arrayCategories, 0); function createTree($array, $currentParent, $currLevel = 0, $prevLevel = -1) { foreach ($array as $categoryId =&gt; $category) { if ($currentParent == $category['parent_id']) { if ($currLevel &gt; $prevLevel) echo " &lt;ul&gt; "; if ($currLevel == $prevLevel) echo " &lt;/li&gt; "; echo '&lt;li id="'.$categoryId.'" onclick=child(this.id);&gt; &lt;span&gt;'.$category['name'].'&lt;/span&gt;'; if ($currLevel &gt; $prevLevel) { $prevLevel = $currLevel; } $currLevel++; createTree ($array, $categoryId, $currLevel, $prevLevel); $currLevel--; } } if ($currLevel == $prevLevel) echo " &lt;/li&gt; &lt;/ul&gt; "; } ?&gt; &lt;div id="content" class="general-style1"&gt; &lt;?php if(mysql_num_rows($result)!=0) { ?&gt; &lt;ul&gt; &lt;li id="0" class="root"&gt;&lt;span&gt;Categories&lt;/span&gt; &lt;?php createTree($arrayCategories, 0); ?&gt; &lt;/li&gt; &lt;/ul&gt; &lt;?php } ?&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Any help is appreciated!</p>
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