you*_*uch 4 php arrays recursion associative-array
根据最底部的示例数组,我希望能够在数组内附加每个嵌入数组的深度.例如:
array (
53 =>
array (
'title' => 'Home',
'path' => '',
'type' => '118',
'pid' => 52,
'hasChildren' => 0,
),
根据下面显示的示例数组具有一个深度,所以它现在应该如下所示:
array (
53 =>
array (
'title' => 'Home',
'path' => '',
'type' => '118',
'pid' => 52,
'hasChildren' => 0,
'depth' => 1,
),
等等...
我所做的所有递归数组函数尝试都非常令人尴尬.但是我查看了具有getDepth函数的RecursiveArrayIterator.我对如何将它附加到当前数组感到困惑...非常感谢任何帮助,谢谢.
array (
'title' => 'Website Navigation',
'path' => '',
'type' => '115',
'pid' => 0,
'hasChildren' => 1,
'children' =>
array (
53 =>
array (
'title' => 'Home',
'path' => '',
'type' => '118',
'pid' => 52,
'hasChildren' => 0,
),
54 =>
array (
'title' => 'Features',
'path' => 'features',
'type' => '374',
'pid' => 52,
'hasChildren' => 1,
'children' =>
array (
59 =>
array (
'title' => 'artistic',
'path' => 'features/artistic',
'type' => '374',
'pid' => 54,
'hasChildren' => 1,
'children' =>
array (
63 =>
array (
'title' => 'galleries',
'path' => 'features/artistic/galleries',
'type' => '374',
'pid' => 59,
'hasChildren' => 1,
'children' =>
array (
65 =>
array (
'title' => 'graphics',
'path' => 'features/artistic/galleries/graphics',
'type' => '118',
'pid' => 63,
'hasChildren' => 0,
),
67 =>
array (
'title' => 'mixed medium',
'path' => 'features/artistic/galleries/mixed-medium',
'type' => '118',
'pid' => 63,
'hasChildren' => 0,
),
64 =>
array (
'title' => 'overview',
'path' => 'features/artistic/galleries',
'type' => '118',
'pid' => 63,
'hasChildren' => 0,
),
68 =>
array (
'title' => 'photography',
'path' => 'features/artistic/galleries/photography',
'type' => '118',
'pid' => 63,
'hasChildren' => 0,
),
66 =>
array (
'title' => 'traditional',
'path' => 'features/artistic/galleries/traditional',
'type' => '118',
'pid' => 63,
'hasChildren' => 0,
),
),
),
62 =>
array (
'title' => 'overview',
'path' => 'features/artistic',
'type' => '118',
'pid' => 59,
'hasChildren' => 0,
),
69 =>
array (
'title' => 'tutorials',
'path' => 'features/artistic/tutorials',
'type' => '374',
'pid' => 59,
'hasChildren' => 1,
'children' =>
array (
71 =>
array (
'title' => 'by category',
'path' => 'features/artistic/tutorials/by-category/',
'type' => '118',
'pid' => 69,
'hasChildren' => 0,
),
72 =>
array (
'title' => 'by date',
'path' => 'features/artistic/tutorials/by-date/',
'type' => '118',
'pid' => 69,
'hasChildren' => 0,
),
70 =>
array (
'title' => 'overview',
'path' => 'features/artistic/tutorials',
'type' => '118',
'pid' => 69,
'hasChildren' => 0,
),
),
),
),
),
58 =>
array (
'title' => 'overview',
'path' => 'features',
'type' => '118',
'pid' => 54,
'hasChildren' => 0,
),
61 =>
array (
'title' => 'projects / labs',
'path' => 'features/projects-labs/',
'type' => '374',
'pid' => 54,
'hasChildren' => 0,
),
60 =>
array (
'title' => 'web development',
'path' => 'features/web-development',
'type' => '374',
'pid' => 54,
'hasChildren' => 1,
'children' =>
array (
74 =>
array (
'title' => 'articles',
'path' => 'features/web-development/articles/',
'type' => '374',
'pid' => 60,
'hasChildren' => 0,
),
73 =>
array (
'title' => 'overview',
'path' => 'features/web-development',
'type' => '118',
'pid' => 60,
'hasChildren' => 0,
),
75 =>
array (
'title' => 'tutorials',
'path' => 'features/web-development/tutorials',
'type' => '374',
'pid' => 60,
'hasChildren' => 0,
),
),
),
),
),
55 =>
array (
'title' => 'Activity',
'path' => 'activity',
'type' => '374',
'pid' => 52,
'hasChildren' => 0,
),
56 =>
array (
'title' => 'Blog',
'path' => 'blog',
'type' => '374',
'pid' => 52,
'hasChildren' => 0,
),
57 =>
array (
'title' => 'About',
'path' => 'about',
'type' => '374',
'pid' => 52,
'hasChildren' => 1,
'children' =>
array (
76 =>
array (
'title' => 'the author',
'path' => 'about/the-author',
'type' => '118',
'pid' => 57,
'hasChildren' => 0,
),
77 =>
array (
'title' => 'the website',
'path' => 'about/the-website',
'type' => '118',
'pid' => 57,
'hasChildren' => 0,
),
),
),
),
),
);
print_r($example);
?>
我假设有另一个数组(在顶部没有包含在你的示例代码中.这样的东西？
function array_set_depth($array, $depth = -1)
{
$subdepth = $depth + 1;
if ($depth < 0) {
foreach ($array as $key => $subarray) {
$temp[$key] = array_set_depth(($subarray), $subdepth);
}
}
if ($array['hasChildren'] && isset($array['children'])) {
foreach ($array['children'] as $key => $subarray) {
$temp[$key] = array_set_depth($subarray, $subdepth);
}
$array['children'] = $temp;
}
$array['depth'] = $depth;
return $array;
}
用法示例,我将您的数组设置为值$ a:
$b = array_set_depth($a);
print_r($b);
编辑:
要在孩子们之前设置深度以进行漂亮的打印,您可以这样做:
function array_set_depth($array, $depth = -1)
{
$subdepth = $depth + 1;
if ($depth < 0) {
foreach ($array as $key => $subarray) {
$temp[$key] = array_set_depth(($subarray), $subdepth);
}
return $temp;
}
$array['depth'] = $depth;
if ($array['hasChildren'] && isset($array['children'])) {
foreach ($array['children'] as $key => $subarray) {
$temp[$key] = array_set_depth($subarray, $subdepth);
}
unset($array['children']);
$array['children'] = $temp;
}
return $array;
}
像这样的递归函数应该这样做吗？
function setDepth(&$a, $depth)
{
$a['depth']=$depth;
foreach($a as $key=>$value)
{
if (is_array($value))
setDepth($a[$key], $depth+1);
}
}
需要注意的是,数组是通过引用传递的,因此我们可以对其进行修改.请注意,我们还在对setDepth的递归调用中使用此引用.虽然我使用foreach是为了方便,但$ value变量是一个副本,并且将它传递给setDepth只会在foreach循环的范围内进行短暂的更改.
修改了 Pauls 代码以使用此示例。
function setDepth(&$a, $depth = -1)
{
if (($depth > -1) && !($depth % 2))
$a['depth']= $depth / 2;
foreach($a as $key=>$value)
{
if (is_array($value))
setDepth($a[$key], $depth+1);
}
}
setDepth($a);
print_r($a);
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