Building Hierarchy out of array using tables - PHP

Question

I'm having difficulties with the following scenario, I have an array with categories, so categories can have child categories and the child categories can have child categories infinitely. Now what I'm trying to achieve is the following, but I just can't manage to achive this.

I have an array $items in the following structure

Now I want the following array to display in a table with each child level indented, and if it should go one level up from Child Level 3 to Child Level 2 the indetation should reverse again.

Example

<table border="2" width="100%">
    <tr>
        <td>Main Cat</td>
    </tr>
    <tr>
        <td>Main Cat</td>
    </tr>
    <tr>
        <td>Main Cat</td>
    </tr>
    <tr>
        <td style="margin-left:20px;">Child Level 1</td>
    </tr>
    <tr>
        <td style="margin-left:20px;">Child Level 1</td>
    </tr>
    <tr>
        <td style="margin-left:40px;">Child Level 2</td>
    </tr>
    <tr>
        <td style="margin-left:60px;">Child Level 3</td>
    </tr>
    <tr>
        <td style="margin-left:20px;">Child Level 1</td>
    </tr>
    <tr>
        <td style="margin-left:20px;">Child Level 1</td>
    </tr>
    <tr>
        <td style="margin-left:40px;">Child Level 2</td>
    </tr>
    <tr>
        <td style="margin-left:40px;">Child Level 2</td>
    </tr>
</table>

My PHP code looks like this thus far,

public function renderCategoriesRecursive($items)
        {
                foreach($items as $item)
                {

                        $itemCount = count($item['items']);



                        echo CHtml::openTag('tr');
                            echo CHtml::openTag('td',array('class'=>$class));
                                echo $item['label'];
                            echo CHtml::closeTag('tr');
                        echo CHtml::closeTag('tr');


                        if(isset($item['items']) && $itemCount)
                        {

                                $this->renderCategoriesRecursive($item['items']);

                        }
                }
}

The variable $items contains the array above

Why not use JSON? That's what it is for. php.net/manual/en/book.json.php — Diodeus - James MacFarlane
– Diodeus - James MacFarlane, Commented Feb 11, 2013 at 22:06
This question has nothing to do with JSON... unless you mean for him to use AJAX and build it client side with Javascript templates. — runspired
– runspired, Commented Feb 11, 2013 at 22:13
You really ought to use nested lists for this, but I'll give you a solution below using tabling. — runspired
– runspired, Commented Feb 11, 2013 at 22:15
@runspired - Nested lists will do the job, but I need to have it in a tabular format, with borders etc, except if I can maybe style the list to look and act like tables, but I'm not sure if it might get a second column in future — Elitmiar
– Elitmiar, Commented Feb 11, 2013 at 22:17

runspired · Accepted Answer · 2013-02-11 22:24:10Z

1

I noticed that your own solution referenced the variable $class, so I've incorporated that too. You really don't need to use CHtml (unless you do, but I've never seen such a case)

function renderItems( $array, $class, $indent = 0  ) {

    foreach( $items as $item) {
        echo '<tr><td class="'.$class.'">'.$item['label'].'</td></tr>';

        if( isset( $item['items'] && count( $item['items'] )
            renderItems($item['items'],$class,$indent+1);
    }

}

answered Feb 11, 2013 at 22:24

runspired

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