[英]Parse the items in an multidimentional array php
我正在創建一個電子商務網站,我必須提供商店在特定陣列中的類別。 目前,從mysql表中檢索的數據在不同的數組項中包含相同的類別ID,如果數組具有不同的子類別,我必須在同一數組中收集相同的類別ID,並且子類別創建嵌套數組。 代碼在laravel 4.2上。 這是現在的數據格式,
"data": [
{
"id": 1,
"name": "Fruits",
"sub_category_names": [
"Dairy Whiteners"
],
"total_items": 69
},
{
"id": 1,
"name": "Fruits",
"sub_category_names": [
"Tea & Coffee"
],
"total_items": 69
},
{
"id": 1,
"name": "Fruits",
"sub_category_names": [
"Concentrates - Tang etc"
],
"total_items": 69
},
{
"id": 2,
"name": "Beverages",
"sub_category_names": [
"Tea & Coffee"
],
"total_items": 28
},
{
"id": 2,
"name": "Beverages",
"sub_category_names": [
"Concentrates - Tang etc"
],
"total_items": 28
}
]
這就是我需要的,
"data": [
{
"id": 1,
"name": "Fruits",
"sub_category_names": [
"Dairy Whiteners" , "Concentrates - Tang etc" , "Tea & Coffee"
],
"total_items": 69
} ,
{
"id": 2,
"name": "Beverages",
"sub_category_names": [
"Tea & Coffee" , "Concentrates - Tang etc"
],
"total_items": 28
}
]
我為上面寫的代碼,
// For the current categories create a common array for subcategories for same categories
$filteringSelectedCategories = [];
$subCategoriesNamesLocal = [];
$innerIndex = 0;
for ($i = 0; $i < count($selectedCategories); $i++) {
// to prevent undefined offset error
if (!isset($selectedCategories[$i + 1])) {
continue ;
// if 6 don't exist then deal with 5
}
// if the id of two items is same then push that sub category name in the same array
if ($selectedCategories[$i]['id'] === $selectedCategories[$i + 1]['id']) {
array_push($subCategoriesNamesLocal, $selectedCategories[$i]['sub_category_names']);
}
// if the id is different then push the array values with the sub category name in an array
else {
$filteringSelectedCategories[$innerIndex]['id'] = $selectedCategories[$i]['id'];
$filteringSelectedCategories[$innerIndex]['name'] = $selectedCategories[$i]['name'];
$filteringSelectedCategories[$innerIndex]['sub_category_names'] = $subCategoriesNamesLocal;
$filteringSelectedCategories[$innerIndex]['total_items'] = $selectedCategories[$i]['total_items'];
// nullify the array after assigning the value
$subCategoriesNamesLocal = [];
// increment the new array index
$innerIndex = $innerIndex + 1;
}
}
這是我從上面得到的輸出,
"data": [
{
"id": 1,
"name": "Fruits",
"sub_category_names": [
[
"Dairy Whiteners"
],
[
"Tea & Coffee"
]
],
"total_items": 69
}
]
我不完全確定我會看到可能發生的偏移誤差,但我相信你可以很容易地逃脫;
foreach ($selectedCategories as $key => $data) {
$newKey = $data['id'];
$filteringSelectedCategories[$newKey]['id'] = $data['id'];
$filteringSelectedCategories[$newKey]['name'] = $data['name'];
$filteringSelectedCategories[$newKey]['sub_category_names'][] = $data['sub_category_names'];
$filteringSelectedCategories[$newKey]['total_items'] = $data['total_items'];
}
您無法直接在$ subCategoriesNamesLocal中進行數組推送,因為您正在嵌套數組。 在外面創建一個數組,然后將其連接到字段。
嘗試這個:
// For the current categories create a common array for subcategories for same categories
$filteringSelectedCategories = [];
$subCategoriesNamesLocal = [];
$innerIndex = 0;
for ($i = 0; $i < count($selectedCategories); $i++) {
// to prevent undefined offset error
if (!isset($selectedCategories[$i + 1])) {
continue ;
// if 6 don't exist then deal with 5
}
// if the id of two items is same then push that sub category name in the same array
if ($selectedCategories[$i]['id'] === $selectedCategories[$i + 1]['id']) {
array_push($subCategoriesNamesLocal, $selectedCategories[$i]['sub_category_names']);
}
// if the id is different then push the array values with the sub category name in an array
else {
$filteringSelectedCategories[$innerIndex]['id'] = $selectedCategories[$i]['id'];
$filteringSelectedCategories[$innerIndex]['name'] = $selectedCategories[$i]['name'];
$filteringSelectedCategories[$innerIndex]['sub_category_names'] = '"' . implode('","', $subCategoriesNamesLocal) . '"';
}
$filteringSelectedCategories[$innerIndex]['total_items'] = $selectedCategories[$i]['total_items'];
// nullify the array after assigning the value
$subCategoriesNamesLocal = [];
// increment the new array index
$innerIndex = $innerIndex + 1;
}
}
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