我有兩個多維陣列。我正在遍歷兩個陣列，檢查某些值并創建一個新陣列。
$full_cats array
Array
(
[0] => Array
(
[parent_cats] => Array
(
[id] => 384
[name] => Beers & Ales
[parent] => 0
)
)
[1] => Array
(
[parent_cats] => Array
(
[id] => 387
[name] => Wines
[parent] => 0
)
)
)
$sub_cats array
Array
(
[0] => Array
(
[sub_cats] => Array
(
[id] => 386
[name] => Ales
[parent] => 384
)
)
[1] => Array
(
[sub_cats] => Array
(
[id] => 385
[name] => Beers
[parent] => 384
)
)
[2] => Array
(
[sub_cats] => Array
(
[id] => 403
[name] => Red
[parent] => 387
)
)
)
我回圈遍歷兩個陣列以檢查 $sub_cat['sub_cats']['parent'] 值是否與 $full_cat['parent_cats']['id'] 值相同。如果這是真的，兩個值都會添加到 $master_cats 陣列中。
$master_cats = array();
foreach ($sub_cats as $sub_cat) {
foreach ($full_cats as $full_cat) {
if( $sub_cat['sub_cats']['parent'] == $full_cat['parent_cats']['id'] ){
$master_cats[] = array(
"parent_cats" => array(
$full_cat['parent_cats'],
),
"sub_cats" => array(
$sub_cat['sub_cats'],
)
);
};
};
};
$master_cats 輸出 -
Array
(
[0] => Array
(
[parent_cats] => Array
(
[0] => Array
(
[id] => 384
[name] => Beers & Ales
[parent] => 0
)
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 386
[name] => Ales
[parent] => 384
)
)
)
[1] => Array
(
[parent_cats] => Array
(
[0] => Array
(
[id] => 384
[name] => Beers & Ales
[parent] => 0
)
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 385
[name] => Beers
[parent] => 384
)
)
)
[2] => Array
(
[parent_cats] => Array
(
[0] => Array
(
[id] => 387
[name] => Wines
[parent] => 0
)
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 403
[name] => Red
[parent] => 387
)
)
)
)
$master_cats 陣列有兩個問題。
第一個問題 - 如您所見，索引 0 和 1 具有相同的 [parent_cats] 值。如果 [parent_cats] 鍵/值不存在，我只想添加它們。
第二個問題 - $master_cats 陣列索引 0 & 1，sub_cats 陣列，有些值不同但都具有相同的 [sub_cats][parent] => 384 所以它們屬于相同的陣列索引，例如 0。
下面是我希望通過上面的 foreach/loop 中的 $master_cats 陣列實作的目標
Array
(
[0] => Array
(
[parent_cats] => Array
(
[0] => Array
(
[id] => 384 <-- Parent ID
[name] => Beers & Ales
[parent] => 0
)
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 386
[name] => Ales
[parent] => 384 <-- belongs to [parent_cats][id]
)
[1] => array
(
[id] => 385
[name] => Beers
[parent] => 384 <-- belongs to [parent_cats][id]
)
)
)
[1] => Array
(
[parent_cats] => Array
(
[0] => Array
(
[id] => 387 <-- Parent ID
[name] => Wines
[parent] => 0
)
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 403
[name] => Red
[parent] => 387 <-- belongs to [parent_cats][id]
)
)
)
)
uj5u.com熱心網友回復：
這是解決問題的一種方法。注意：您的陣列結構有點過度嵌套......但這是給定結構的解決方案
$all = [];
$tmpsubs = [];
foreach ($full_cats as $parent) {
$tmp = ['parent_cats' => $parent['parent_cats'], 'sub_cats' => []];
foreach ($sub_cats as $sub) {
if ($sub['sub_cats']['parent'] == $parent['parent_cats']['id']) {
$tmp['sub_cats'][]=$sub['sub_cats'];
}
}
$all[] = $tmp;
}
print_r($all);
示例：https : //3v4l.org/01oLF
輸出：
Array
(
[0] => Array
(
[parent_cats] => Array
(
[id] => 384
[name] => Beers & Ales
[parent] => 0
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 386
[name] => Ales
[parent] => 384
)
[1] => Array
(
[id] => 385
[name] => Beers
[parent] => 384
)
)
)
[1] => Array
(
[parent_cats] => Array
(
[id] => 387
[name] => Wines
[parent] => 0
)
[sub_cats] => Array
(
[0] => Array
(
[id] => 403
[name] => Red
[parent] => 387
)
)
)
)
注意：這是一個簡化陣列結構的示例（這需要更改我的答案中的代碼，但最終可能會讓您的生活更輕松一些）
$parent_cats= array(
array(
"id" => "384",
"name" => "Beers & Ales",
"parent" => "0"
),
array(
"id" => "387",
"name" => "Wines",
"parent" => "0"
));
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