如何在php中創建類別subcatagory樹

我正在嘗試從類別，子類別數據的數組中創建樹狀排序的選擇框。這是陣列如何在php中創建類別subcatagory樹

Array 
(
    [0] => Array 
     (
      [id] => 6 
      [cata_key] => 32e9c75e38d2a1d77b2b49b2 
      [cata_name] => Road 
      [app_key] => b80e0935b348da61b2a807ff 
      [parentid] => 0 
     ) 

[1] => Array 
    (
     [id] => 7 
     [cata_key] => 56bae4297efcbf796b230a99 
     [cata_name] => River 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 0 
    ) 

[2] => Array 
    (
     [id] => 8 
     [cata_key] => 1c748603f36105b921b54165 
     [cata_name] => Air 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 0 
    ) 

[3] => Array 
    (
     [id] => 9 
     [cata_key] => 780c3eb53264d5c33a26d49f 
     [cata_name] => Cars 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 6 
    ) 

[4] => Array 
    (
     [id] => 10 
     [cata_key] => 111cd06b1575457f665d460e 
     [cata_name] => Hyundai 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 9 
    ) 

[5] => Array 
    (
     [id] => 11 
     [cata_key] => 26ca0e1622c11ed2628eaadf 
     [cata_name] => Maruthi 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 9 
    ) 

[6] => Array 
    (
     [id] => 12 
     [cata_key] => 7fc72e49fe67d0b777648f54 
     [cata_name] => Boat 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 7 
    ) 

[7] => Array 
    (
     [id] => 13 
     [cata_key] => b6125c73f6d7c153f45e133e 
     [cata_name] => Ship 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 7 
    ) 

[8] => Array 
    (
     [id] => 14 
     [cata_key] => 38c749056a9f583e284e509b 
     [cata_name] => 2 Seater 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 12 
    ) 

[9] => Array 
    (
     [id] => 15 
     [cata_key] => 6ebfcad4d4e05e84d333b7e5 
     [cata_name] => 10 Seater 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 12 
    ) 

[10] => Array 
    (
     [id] => 16 
     [cata_key] => 49973084640af71ad61e634b 
     [cata_name] => Bikes 
     [app_key] => b80e0935b348da61b2a807ff 
     [parentid] => 6 
    ) 
)

其中parentid指向父類別。得到的陣列應該在

Road 
->Cars 
    -> Hyndai 
    -> Maruthi 
-> Bikes 
River 
-> Boats 
    -> 2 seater 
    -> 10 seater 
-> Ship 
Air

來源

2013-04-18 JLM

順序請參考本http://codepad.org/8p9DyHUZ – 2013-04-18 06:27:08

顯示你已經嘗試過的東西，解釋它是如何去錯了，有人會幫你解決它。 – Barmar 2013-04-18 06:28:33

謝謝Praveen。請將其添加爲ab答案，然後我可以提出您的答案 – JLM 2013-04-18 06:32:19

<?php 
$categories = array(
    array('id' => 1, 'parent' => 0, 'cata_name' => 'Road'), 
    array('id' => 2, 'parent' => 1, 'name' => 'Cars'), 
    array('id' => 3, 'parent' =>2, 'name' => 'Maruthi'), 
    array('id' => 4, 'parent' => 2, 'name' => 'Hyundai') 
); 

function categoriesToTree(&$categories) { 

    $map = array(
     0 => array('subcategories' => array()) 
    ); 

    foreach ($categories as &$category) { 
     $category['subcategories'] = array(); 
     $map[$category['id']] = &$category; 
    } 

    foreach ($categories as &$category) { 
     $map[$category['parent']]['subcategories'][] = &$category; 
    } 

    return $map[0]['subcategories']; 

} 



$tree = categoriesToTree($categories); 



echo "=== TREE ===\n"; 
echo "<pre>"; print_r ($tree); 
?>

來源

2013-04-18 06:34:20

如何在php中創建類別subcatagory樹

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