问题描述
我有一个包含子项的 PHP 数组 ($menu)。我想在具有相同父 ID 的项目中循环，例如 [post_parent] => 36
foreach($menu as $m) {
*where post_parent => 36 ???*
echo $m->title;
}
这是我的数组：
Array
(
[0] => WP_Post Object
(
[ID] => 110
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] => L’école
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => lecole
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost:8888/?p=110
[menu_order] => 1
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 110
[menu_item_parent] => 0
[object_id] => 36
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/lecole/
[title] => L’école
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[1] => WP_Post Object
(
[ID] => 114
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] =>
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => 114
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 36
[guid] => http://localhost:8888/?p=114
[menu_order] => 2
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 114
[menu_item_parent] => 110
[object_id] => 45
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/lecole/a-propos/
[title] => À propos
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[2] => WP_Post Object
(
[ID] => 113
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] =>
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => 113
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 36
[guid] => http://localhost:8888/?p=113
[menu_order] => 3
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 113
[menu_item_parent] => 110
[object_id] => 103
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/lecole/le-lieu/
[title] => Le lieu
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[3] => WP_Post Object
(
[ID] => 112
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] => L’équipe
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => lequipe
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 36
[guid] => http://localhost:8888/?p=112
[menu_order] => 4
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 112
[menu_item_parent] => 110
[object_id] => 106
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/lecole/lequipe/
[title] => L’équipe
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[4] => WP_Post Object
(
[ID] => 115
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] => Les alumni
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => les-alumni
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost:8888/?p=115
[menu_order] => 5
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 115
[menu_item_parent] => 110
[object_id] => 115
[object] => custom
[type] => custom
[type_label] => Lien personnalisé
[title] => Les alumni
[url] => http://localhost:8888/lecole/test/
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[5] => WP_Post Object
(
[ID] => 111
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] =>
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => 111
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 36
[guid] => http://localhost:8888/?p=111
[menu_order] => 6
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 111
[menu_item_parent] => 110
[object_id] => 108
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/lecole/les-partenaires/
[title] => Les partenaires
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[6] => WP_Post Object
(
[ID] => 116
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] => Le fond de dotation
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => le-fond-de-dotation
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost:8888/?p=116
[menu_order] => 7
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 116
[menu_item_parent] => 110
[object_id] => 116
[object] => custom
[type] => custom
[type_label] => Lien personnalisé
[title] => Le fond de dotation
[url] => http://localhost:8888/lecole/test/
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[7] => WP_Post Object
(
[ID] => 117
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] =>
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => 117
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost:8888/?p=117
[menu_order] => 8
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 117
[menu_item_parent] => 0
[object_id] => 43
[object] => page
[type] => post_type
[type_label] => Page
[url] => http://localhost:8888/les-formations/
[title] => Les formations
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
[8] => WP_Post Object
(
[ID] => 118
[post_author] => 1
[post_date] => 2021-01-26 18:29:03
[post_date_gmt] => 2021-01-26 17:29:03
[post_content] =>
[post_title] => C'est public
[post_excerpt] =>
[post_status] => publish
[comment_status] => closed
[ping_status] => closed
[post_password] =>
[post_name] => cest-public
[to_ping] =>
[pinged] =>
[post_modified] => 2021-01-26 18:29:03
[post_modified_gmt] => 2021-01-26 17:29:03
[post_content_filtered] =>
[post_parent] => 0
[guid] => http://localhost:8888/?p=118
[menu_order] => 9
[post_type] => nav_menu_item
[post_mime_type] =>
[comment_count] => 0
[filter] => raw
[db_id] => 118
[menu_item_parent] => 0
[object_id] => -20
[object] => evenements
[type] => post_type_archive
[title] => C'est public
[type_label] => Archive du type de publication
[url] => http://localhost:8888/evenements/
[target] =>
[attr_title] =>
[description] =>
[classes] => Array
(
[0] =>
)
[xfn] =>
)
)
我知道这很基本，但我找不到解决方案...谢谢
解决方法
您提供的示例代码可以按如下方式完成。它将简单地回显父项超过 36 的每个项目的标题。
foreach($menu as $m) {
if ($m['post_parent'] >= 36) {
echo $m['title'];
}
}
我怀疑这可能是为了对菜单项进行分组（例如，打印父项为 0、父项 1、36 等等的每个标题）。如果您想将它们分组并打印在一起，您可以尝试这样的操作：
（根据需要修改）
$groups = array();
// Group items by parent value
foreach($menu as $m) {
$parent = $m['parent'];
// Add to group (if exists). Otherwise,we must create the group.
if (!isset($groups[$parent)) {
$groups[$parent] = array($m); // Create new key in array
}
else {
$groups[$parent][] = $m; // Append to array
}
}
// Sort them in ascending order (by parent/key)
$groups = ksort($groups);
// Print groups in order
// Outer loop: Iterate through groups (each element contains a list of every item with the same parent)
foreach ($groups as $group) {
// Inner loop: Loop through each item in this group:
foreach ($group as $item) {
// Edit this as needed.
echo "Parent: " . $item['parent'] . ". Title: " . $item['title'];
}
}
上面的代码首先将每个菜单项按其父项分组，然后将它们打印在一起。这是否符合您的需求？
编辑：如果每个项目都存储为对象而不是数组，请替换以下内容：
- $item['parent'] 与 $item->parent
- 将 $m['parent'] 替换为 $m->parent
- 用 $item->title 替换 $item['title']
你应该使用 foreach 并找到等于 36 的 post_parent 和 if 条件如下
foreach($menu as $m) {
if (isset($m->post_parent) && $m->post_parent == 36) {
echo "post_parent 36";
}
}