icingaweb2-module-businessprocess/application/views/scripts/test/layout.phtml

<?php
$bp = (object) [
    'operator' => 'or',
    'status'   => 'ok',
    'handled'  => false,
    'children' => [
        'DNS Service' => (object) [
            'status'   => 'ok',
            'handled'  => false,
            'children' => [],
        ],
        'Exchange' => (object) [
            'operator' => 'and',
            'status'   => 'critical',
            'handled'  => false,
            'children' => [
                'Exchange 1' => (object) [
                    'status'   => 'critical',
                    'handled'  => false,
                    'children' => [],
                ],
                'Exchange 2' => (object) [
                    'status'   => 'warning',
                    'handled'  => true,
                    'children' => [],
                ],
                'Exchange 3' => (object) [
                    'status'   => 'ok',
                    'handled'  => false,
                    'children' => [],
                ]
            ],
        ]
    ]
];

function renderProcess($name, $process)
{
    $html = sprintf('<table class="bp %s%s%s">
  <tbody>
    <tr><th%s><a href="#">%s</a></th><td><a href="#">%s</a></td></tr>
',
        $process->status,
        $process->handled ? ' handled' : '',
        empty($process->children) ? '' : ' operator',
        empty($process->children) ? ' class="service"' : sprintf(' rowspan="%d"', count($process->children) + 1),
        empty($process->children) ? '&nbsp;' : $process->operator,
        $name
    );
    if (! empty($process->children)) {
//        $html .= '<tbody>
//';
        foreach ($process->children as $name => $child) {
            $html .= '<tr><td>' . renderProcess($name, $child) . '</td></tr>';
        }
//        $html .= '</tbody>';
    }
    $html .= '</tbody></table>';
    return $html;
}


?>
<div class="content">
<h1>Testlayout</h1>

<?= renderProcess('Mail Process', $bp) ?>

</div>