我有这个有组织的数组，它与下面的递归函数配合得很好。
Array
(
[6] => Array
(
[0] => Array
(
[id_parent] => 6
[level] => 2
[lang] => en
[id_page] => 15
[title] => test 3
[nav_title] =>
[url] => test-3
)
)
[13] => Array
(
[0] => Array
(
[id_parent] => 13
[level] => 3
[lang] => en
[id_page] => 14
[title] => test 2
[nav_title] =>
[url] => test-2
)
)
[11] => Array
(
[0] => Array
(
[id_parent] => 11
[level] => 2
[lang] => en
[id_page] => 13
[title] => Test
[nav_title] =>
[url] => test
)
)
[3] => Array
(
[0] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 11
[title] => Spare Parts
[nav_title] =>
[url] => spare-parts
)
[1] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 10
[title] => İndustrial İroning Table
[nav_title] =>
[url] => industrial-ironing-table
)
[2] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 9
[title] => İndustrial İroning Boiler
[nav_title] =>
[url] => industrial-ironing-boiler
)
[3] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 8
[title] => Steam Boılers
[nav_title] =>
[url] => steam-boilers
)
[4] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 7
[title] => Home Type Steam Boilers
[nav_title] =>
[url] => home-type-steam-boilers
)
[5] => Array
(
[id_parent] => 3
[level] => 1
[lang] => en
[id_page] => 6
[title] => Used İrons
[nav_title] =>
[url] => used-irons
)
)
[0] => Array
(
[0] => Array
(
[id_parent] => 0
[level] => 0
[lang] => en
[id_page] => 1
[title] => Home
[nav_title] =>
[url] => home
)
[1] => Array
(
[id_parent] => 0
[level] => 0
[lang] => en
[id_page] => 2
[title] => About Us
[nav_title] =>
[url] => about-us
)
[2] => Array
(
[id_parent] => 0
[level] => 0
[lang] => en
[id_page] => 3
[title] => Products
[nav_title] =>
[url] => products
)
[3] => Array
(
[id_parent] => 0
[level] => 0
[lang] => en
[id_page] => 5
[title] => Quality
[nav_title] =>
[url] => quality
)
[4] => Array
(
[id_parent] => 0
[level] => 0
[lang] => en
[id_page] => 4
[title] => Contact Us
[nav_title] =>
[url] => contact-us
)
)
)
但是，如果我从 where 开始查询，它会很好地递归id_parent = 0。当我想选择一个随机页面及其所有以下级别时，它仅适用于所选页面的下一级。我想它是关于index但无法解决它。
function _populate_list($items, $parent = null, $level = '0', $max_depth = '1', $ul_class = '', $active_class = '', $active_segment = 2, $use_span = false, &$data = '')
{
$this->load->config('route_page', TRUE);
$route_page = $this->config->item('route_page', 'route_page');
$index = ($parent == null) ? '0' : $parent;
$space = str_repeat("\t", $level);
if (isset($items[$index]))
{
$data .= "\n" . $space . '<ul';
$data .= $parent == null ? ' id="navigation"' : '';
if ($ul_class != '')
$data .= ' class="' . $ul_class . '"';
$data .= '>' . "\n";
foreach ($items[$index] as $child)
{
$data .= $space . '<li';
if ($active_class)
{
$tmp = $route_page[$child['lang'] . '/' . $child['id_page']];
$tmp = explode('/', $tmp);
if ($this->uri->segment($active_segment) == $tmp[$active_segment - 1])
{
$data .= ' class="' . $active_class . '"';
}
}
$data .= '>';
$data .= /*id="' . $child['lang']. '-' .$child['id_page'] . '">'.*/ "\n" . $space . '<a href="' . base_url() . $route_page[$child['lang'] . '/' . $child['id_page']] . '">';
if ($use_span)
$data .= '<span>';
if ($child['nav_title'] != '')
$data .= $child['nav_title'];
else
$data .= $child['title'];
$data .= ($use_span) ? '</span></a>' . "\n" : '</a>' . "\n";
if (($level + 1) < $max_depth)
{
$this->_populate_list($items, $child['id_page'], $level + 1, $max_depth, '', '', $active_segment + 1, $use_span, $data);
}
$data .= $space . '</li>' . "\n";
}
$data .= $space . '</ul>' . "\n";
}
return $data;
}
有什么灯可以继续吗？
评论后编辑
好吧，现在我正在使用@Baba 提供的方式，除非我无法控制开始和结束深度，否则它可以工作。
function build_navigation(array $array, $no = 0, $ul_class = '', $active_class = 'active', $active_segment = '2', $use_span = true)
{
$this->load->config('route_page', TRUE);
$route_page = $this->config->item('route_page', 'route_page');
$child = $this->build_navigation_children_setter($array, $no);
if (empty($child)) return "";
$data = '<ul';
if('' != $ul_class) $data .= ' class="' . $ul_class . '"';
$data .= '>'."\n";
foreach ( $child as $value )
{
//$content .= sprintf("\t<li>%s</li>\n", $value['title']);
$data .= "\t" . '<li';
if($active_class)
{
$tmp = $route_page[$value['lang'] . '/' . $value['id_page']];
$tmp = explode('/', $tmp);
if($this->uri->segment($active_segment) == $tmp[$active_segment-1])
{
$data .= ' class="' . $active_class . '"';
}
}
$data .= '>';
$data .= '<a href="'. base_url() . $route_page[$value['lang'] . '/' . $value['id_page']] . '">';
if ($use_span) $data .= '<span>';
if('' != $value['nav_title']) $data .= $value['nav_title'];
else $data .= $value['title'];
$data .= ($use_span) ? '</span></a>' . "\n" : '</a>';
$data .= $this->build_navigation($array, $value['id_page'], $level+1, $max_depth);
$data .= "\t" . '</li>' . "\n";
}
$data .= "</ul>\n";
return $data;
}
function build_navigation_children_setter($array, $id_page)
{
return array_filter(
$array,
function ($var) use($id_page)
{
return $var['id_parent'] == $id_page;
}
);
}
如何控制开始和停止深度？