php - 从单个数组构建多维

Question

大纲

在花了 2 天的时间试图让它工作之后......

解决方案

我想将我的数组重组为具有以下结构的多维数组：

 Level 1 -> All level 1s
       Level 2 -> All level 2s
               Level 3 -> Each level Three Item
               Level 3 -> Each level Three Item
       Level 2 -> All level 2s
               Level 3 -> Each level Three Item
               Level 3 -> Each level Three Item
 Level 1 -> All level 1s
       Level 2 -> All level 2s
               Level 3 -> Each level Three Item
               Level 3 -> Each level Three Item
       Level 2 -> All level 2s
               Level 3 -> Each level Three Item
               Level 3 -> Each level Three Item

数据

数据按我需要的顺序写入。例如，所有level 2直接位于Level 1其父级中的应该站点下方的所有内容，Level 1直到下一个Level 1出现在数据中。Level 2这对于和应该是相同的3。基本上在出现更高的数字之前，它应该开始新的一行。

我有很多不同的值，下面的数据只是一个例子。数组内部是level指它应该位于哪个级别。

    array (
      0 => 
      array (
        'key' => 0,
        'id' => '7',
        'level' => '1',
        'name' => 'About Me',
      ),
      1 => 
      array (
        'key' => 1,
        'id' => '78',
        'level' => '2',
        'name' => 'My Conduct at Work',
      ),
      2 => 
      array (
        'key' => 2,
        'id' => '270',
        'level' => '3',
        'name' => 'Dispute Resolution/Grievance',
      ),
      3 => 
      array (
        'key' => 3,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      4 => 
      array (
        'key' => 4,
        'id' => '77',
        'level' => '2',
        'name' => 'My Environment, Health & Safety',
      ),
      5 => 
      array (
        'key' => 5,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      6 => 
      array (
        'key' => 6,
        'id' => '238',
        'level' => '3',
        'name' => 'Policies and Guidance',
      ),
      7 => 
      array (
        'key' => 7,
        'id' => '79',
        'level' => '2',
        'name' => 'My GSK Employment Journey',
      ),
      8 => 
      array (
        'key' => 8,
        'id' => '274',
        'level' => '3',
        'name' => 'Changes in Role',
      ),
      9 => 
      array (
        'key' => 9,
        'id' => '275',
        'level' => '3',
        'name' => 'Leaving GSK',
      ),
      10 => 
      array (
        'key' => 10,
        'id' => '273',
        'level' => '3',
        'name' => 'My Moves',
      ),
      11 => 
      array (
        'key' => 11,
        'id' => '272',
        'level' => '3',
        'name' => 'Starting at GSK',
      ),
      12 => 
      array (
        'key' => 12,
        'id' => '80',
        'level' => '2',
        'name' => 'My Personal Information',
      ),
      13 => 
      array (
        'key' => 13,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      14 => 
      array (
        'key' => 14,
        'id' => '276',
        'level' => '3',
        'name' => 'Manage my Personal Information',
      ),
      15 => 
      array (
        'key' => 15,
        'id' => '76',
        'level' => '2',
        'name' => 'My Talent, Performance & Development',
      ),
      16 => 
      array (
        'key' => 16,
        'id' => '266',
        'level' => '3',
        'name' => 'My Development',
      ),
      17 => 
      array (
        'key' => 17,
        'id' => '268',
        'level' => '3',
        'name' => 'My Learning',
      ),
      18 => 
      array (
        'key' => 18,
        'id' => '267',
        'level' => '3',
        'name' => 'My Performance',
      ),
      19 => 
      array (
        'key' => 19,
        'id' => '75',
        'level' => '2',
        'name' => 'My TotalReward',
      ),
      20 => 
      array (
        'key' => 20,
        'id' => '287',
        'level' => '3',
        'name' => 'Learn More My Benefits',
      ),
      21 => 
      array (
        'key' => 21,
        'id' => '288',
        'level' => '3',
        'name' => 'Learn More My Pay',
      ),
      22 => 
      array (
        'key' => 22,
        'id' => '264',
        'level' => '3',
        'name' => 'My Benefits',
      ),
      23 => 
      array (
        'key' => 23,
        'id' => '263',
        'level' => '3',
        'name' => 'My Pay',
      ),
      24 => 
      array (
        'key' => 24,
        'id' => '265',
        'level' => '3',
        'name' => 'My Recognition',
      ),
      25 => 
      array (
        'key' => 25,
        'id' => '81',
        'level' => '2',
        'name' => 'Time Off, Time & Attendance',
      ),
      26 => 
      array (
        'key' => 26,
        'id' => '281',
        'level' => '3',
        'name' => 'Flexible Working',
      ),
      27 => 
      array (
        'key' => 27,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      28 => 
      array (
        'key' => 28,
        'id' => '279',
        'level' => '3',
        'name' => 'Leave of Absence',
      ),
      29 => 
      array (
        'key' => 29,
        'id' => '280',
        'level' => '3',
        'name' => 'Time & Attendance',
      ),
      30 => 
      array (
        'key' => 30,
        'id' => '278',
        'level' => '3',
        'name' => 'Time Off',
      ),
      31 => 
      array (
        'key' => 31,
        'id' => '1',
        'level' => '1',
        'name' => 'Buying and Paying',
      ),
      32 => 
      array (
        'key' => 32,
        'id' => '1',
        'level' => '2',
        'name' => 'Budget Management',
      ),
      33 => 
      array (
        'key' => 33,
        'id' => '1',
        'level' => '3',
        'name' => 'Asset scrapping or sale (equipment, PC …)',
      ),
      34 => 
      array (
        'key' => 34,
        'id' => '221',
        'level' => '3',
        'name' => 'Cost center creation & change',
      ),
      35 => 
      array (
        'key' => 35,
        'id' => '2',
        'level' => '3',
        'name' => 'Finance Partner',
      ),
      36 => 
      array (
        'key' => 36,
        'id' => '3',
        'level' => '3',
        'name' => 'Operating Budget',
      ),
      37 => 
      array (
        'key' => 37,
        'id' => '222',
        'level' => '3',
        'name' => 'Provision request',
      ),
      38 => 
      array (
        'key' => 38,
        'id' => '4',
        'level' => '3',
        'name' => 'X-charge (Cost Transfer)',
      ),
      39 => 
      array (
        'key' => 39,
        'id' => '3',
        'level' => '2',
        'name' => 'Checks, GOA & X-Charge',
      ),
      40 => 
      array (
        'key' => 40,
        'id' => '10',
        'level' => '3',
        'name' => 'Check Requests',
      ),
      41 => 
      array (
        'key' => 41,
        'id' => '11',
        'level' => '3',
        'name' => 'Collections, credits and debts',
      ),
      42 => 
      array (
        'key' => 42,
        'id' => '12',
        'level' => '3',
        'name' => 'Discounts, Rebates, Commissions and Allowances',
      ),
      43 => 
      array (
        'key' => 43,
        'id' => '217',
        'level' => '3',
        'name' => 'Grant of Authority',
      ),
      44 => 
      array (
        'key' => 44,
        'id' => '4',
        'level' => '3',
        'name' => 'X-charge (Cost Transfer)',
      ),
      45 => 
      array (
        'key' => 45,
        'id' => '6',
        'level' => '2',
        'name' => 'Finance for Finance',
      ),
      46 => 
      array (
        'key' => 46,
        'id' => '241',
        'level' => '3',
        'name' => 'Finance Assurance',
      ),
      47 => 
      array (
        'key' => 47,
        'id' => '22',
        'level' => '3',
        'name' => 'Order to Cash',
      ),
      48 => 
      array (
        'key' => 48,
        'id' => '23',
        'level' => '3',
        'name' => 'R2R - Group Consolidation and Intercompany Profit',
      ),
      49 => 
      array (
        'key' => 49,
        'id' => '24',
        'level' => '3',
        'name' => 'R2R - Management Reporting',
      ),
      50 => 
      array (
        'key' => 50,
        'id' => '25',
        'level' => '3',
        'name' => 'R2R - Record, Forms & Reports',
      ),
      51 => 
      array (
        'key' => 51,
        'id' => '251',
        'level' => '3',
        'name' => 'R2R - Record, General Information',
      ),
      52 => 
      array (
        'key' => 52,
        'id' => '252',
        'level' => '3',
        'name' => 'R2R - Record, Get Help',
      ),
      53 => 
      array (
        'key' => 53,
        'id' => '26',
        'level' => '3',
        'name' => 'R2R - Statutory Reporting',
      ),
      54 => 
      array (
        'key' => 54,
        'id' => '27',
        'level' => '3',
        'name' => 'R2R - Technical Accounting',
      ),
      55 => 
      array (
        'key' => 55,
        'id' => '28',
        'level' => '3',
        'name' => 'Supply Chain Accounting',
      ),
      56 => 
      array (
        'key' => 56,
        'id' => '65',
        'level' => '2',
        'name' => 'Invoice and Supplier Services',
      ),
      57 => 
      array (
        'key' => 57,
        'id' => '13',
        'level' => '3',
        'name' => 'Invoice and Supplier Services',
      ),
      58 => 
      array (
        'key' => 58,
        'id' => '93',
        'level' => '2',
        'name' => 'Mergers, Acquisitions and Divestments Support',
      ),
      59 => 
      array (
        'key' => 59,
        'id' => '317',
        'level' => '3',
        'name' => 'Engage with MAD',
      ),
      60 => 
      array (
        'key' => 60,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      61 => 
      array (
        'key' => 61,
        'id' => '66',
        'level' => '2',
        'name' => 'Procurement Card',
      ),
      62 => 
      array (
        'key' => 62,
        'id' => '14',
        'level' => '3',
        'name' => 'Procurement Card Program',
      ),
      63 => 
      array (
        'key' => 63,
        'id' => '10',
        'level' => '2',
        'name' => 'Procurement for Procurement',
      ),
      64 => 
      array (
        'key' => 64,
        'id' => '49',
        'level' => '3',
        'name' => 'Contract Management',
      ),
      65 => 
      array (
        'key' => 65,
        'id' => '50',
        'level' => '3',
        'name' => 'Market Intelligence/Research Portal',
      ),
      66 => 
      array (
        'key' => 66,
        'id' => '325',
        'level' => '3',
        'name' => 'Procurement Training',
      ),
      67 => 
      array (
        'key' => 67,
        'id' => '51',
        'level' => '3',
        'name' => 'Risk Management',
      ),
      68 => 
      array (
        'key' => 68,
        'id' => '52',
        'level' => '3',
        'name' => 'Spend Analytics',
      ),
      69 => 
      array (
        'key' => 69,
        'id' => '53',
        'level' => '3',
        'name' => 'Supplier Diversity & Development Support',
      ),
      70 => 
      array (
        'key' => 70,
        'id' => '54',
        'level' => '3',
        'name' => 'Supplier Relationship & Performance Management',
      ),
      71 => 
      array (
        'key' => 71,
        'id' => '64',
        'level' => '2',
        'name' => 'Purchases',
      ),
      72 => 
      array (
        'key' => 72,
        'id' => '9',
        'level' => '3',
        'name' => 'Buy Something',
      ),
      73 => 
      array (
        'key' => 73,
        'id' => '259',
        'level' => '3',
        'name' => 'Learn About',
      ),
      74 => 
      array (
        'key' => 74,
        'id' => '3',
        'level' => '1',
        'name' => 'Expenses & Travel',
      ),
      75 => 
      array (
        'key' => 75,
        'id' => '69',
        'level' => '2',
        'name' => 'Book a Flight',
      ),
      76 => 
      array (
        'key' => 76,
        'id' => '72',
        'level' => '3',
        'name' => 'Airline Reservations',
      ),
      77 => 
      array (
        'key' => 77,
        'id' => '71',
        'level' => '2',
        'name' => 'Book a Ground Transportaion',
      ),
      78 => 
      array (
        'key' => 78,
        'id' => '319',
        'level' => '3',
        'name' => 'Rail',
      ),
      79 => 
      array (
        'key' => 79,
        'id' => '76',
        'level' => '3',
        'name' => 'Taxi, Chauffeur & Limousine Services',
      ),
      80 => 
      array (
        'key' => 80,
        'id' => '70',
        'level' => '2',
        'name' => 'Book a Hotel',
      ),
      81 => 
      array (
        'key' => 81,
        'id' => '75',
        'level' => '3',
        'name' => 'Hotel Room Booking',
      ),
      82 => 
      array (
        'key' => 82,
        'id' => '67',
        'level' => '2',
        'name' => 'Credit Card',
      ),
      83 => 
      array (
        'key' => 83,
        'id' => '68',
        'level' => '3',
        'name' => 'Amex',
      ),
      84 => 
      array (
        'key' => 84,
        'id' => '13',
        'level' => '2',
        'name' => 'Expense Policies and Information',
      ),
      85 => 
      array (
        'key' => 85,
        'id' => '69',
        'level' => '3',
        'name' => 'Expense Policies',
      ),
      86 => 
      array (
        'key' => 86,
        'id' => '71',
        'level' => '3',
        'name' => 'VAT Reclaim',
      ),
      87 => 
      array (
        'key' => 87,
        'id' => '68',
        'level' => '2',
        'name' => 'Report Expenses',
      ),
      88 => 
      array (
        'key' => 88,
        'id' => '70',
        'level' => '3',
        'name' => 'Report Expenses',
      ),
      89 => 
      array (
        'key' => 89,
        'id' => '15',
        'level' => '2',
        'name' => 'Travel Information',
      ),
      90 => 
      array (
        'key' => 90,
        'id' => '73',
        'level' => '3',
        'name' => 'Benefits Administration and Management (UK/US)',
      ),
      91 => 
      array (
        'key' => 91,
        'id' => '74',
        'level' => '3',
        'name' => 'Commuter Services/Shuttle Busses',
      ),
      92 => 
      array (
        'key' => 92,
        'id' => '77',
        'level' => '3',
        'name' => 'Health while travelling',
      ),
      93 => 
      array (
        'key' => 93,
        'id' => '320',
        'level' => '3',
        'name' => 'Travel Alerts',
      ),
      94 => 
      array (
        'key' => 94,
        'id' => '14',
        'level' => '2',
        'name' => 'Travel Insurances',
      ),
      95 => 
      array (
        'key' => 95,
        'id' => '65',
        'level' => '3',
        'name' => 'Loss and theft',
      ),
      96 => 
      array (
        'key' => 96,
        'id' => '66',
        'level' => '3',
        'name' => 'Material damages insurance',
      ),
      97 => 
      array (
        'key' => 97,
        'id' => '67',
        'level' => '3',
        'name' => 'Travel insurance for personal injury',
      ),
      98 => 
      array (
        'key' => 98,
        'id' => '4',
        'level' => '1',
        'name' => 'IT Services & Access',
      ),
      99 => 
      array (
        'key' => 99,
        'id' => '16',
        'level' => '2',
        'name' => 'Basic IT Access',
      ),
      100 => 
      array (
        'key' => 100,
        'id' => '78',
        'level' => '3',
        'name' => 'Getting an ID',
      ),
      101 => 
      array (
        'key' => 101,
        'id' => '254',
        'level' => '3',
        'name' => 'Remote Access Tokens',
      ),
      102 => 
      array (
        'key' => 102,
        'id' => '79',
        'level' => '3',
        'name' => 'Request Access',
      ),
      103 => 
      array (
        'key' => 103,
        'id' => '255',
        'level' => '3',
        'name' => 'Request Access - Unix, Linux, VAX, AS400',
      ),
      104 => 
      array (
        'key' => 104,
        'id' => '23',
        'level' => '2',
        'name' => 'Business Unit Systems',
      ),
      105 => 
      array (
        'key' => 105,
        'id' => '93',
        'level' => '3',
        'name' => 'Corporate Finance Systems',
      ),
      106 => 
      array (
        'key' => 106,
        'id' => '84',
        'level' => '3',
        'name' => 'Customer Relationship Management & Marketing Systems',
      ),
      107 => 
      array (
        'key' => 107,
        'id' => '120',
        'level' => '3',
        'name' => 'Discovery Systems',
      ),
      108 => 
      array (
        'key' => 108,
        'id' => '94',
        'level' => '3',
        'name' => 'Global Finance Systems',
      ),
      109 => 
      array (
        'key' => 109,
        'id' => '125',
        'level' => '3',
        'name' => 'HH and EHS Systems',
      ),
      110 => 
      array (
        'key' => 110,
        'id' => '118',
        'level' => '3',
        'name' => 'IT support for audits and inspections',
      ),
      111 => 
      array (
        'key' => 111,
        'id' => '127',
        'level' => '3',
        'name' => 'Legal & Procurement Systems',
      ),
      112 => 
      array (
        'key' => 112,
        'id' => '95',
        'level' => '3',
        'name' => 'Make MRP Services Systems',
      ),
      113 => 
      array (
        'key' => 113,
        'id' => '85',
        'level' => '3',
        'name' => 'Market and Sell systems',
      ),
      114 => 
      array (
        'key' => 114,
        'id' => '121',
        'level' => '3',
        'name' => 'Medical Systems',
      ),
      115 => 
      array (
        'key' => 115,
        'id' => '96',
        'level' => '3',
        'name' => 'Pack & Move Services Systems',
      ),
      116 => 
      array (
        'key' => 116,
        'id' => '86',
        'level' => '3',
        'name' => 'PPV & Sales Reporting & Compliance Systems',
      ),
      117 => 
      array (
        'key' => 117,
        'id' => '122',
        'level' => '3',
        'name' => 'Pre-Clinical Systems',
      ),
      118 => 
      array (
        'key' => 118,
        'id' => '119',
        'level' => '3',
        'name' => 'Quality, Risk & Analytics Systems',
      ),
      119 => 
      array (
        'key' => 119,
        'id' => '312',
        'level' => '3',
        'name' => 'SAP Commercial',
      ),
      120 => 
      array (
        'key' => 120,
        'id' => '128',
        'level' => '3',
        'name' => 'SAP Manufacturing',
      ),
      121 => 
      array (
        'key' => 121,
        'id' => '129',
        'level' => '3',
        'name' => 'Supply Chain Planning Services Systems',
      ),
      122 => 
      array (
        'key' => 122,
        'id' => '123',
        'level' => '3',
        'name' => 'Test Lab Systems & Support',
      ),
      123 => 
      array (
        'key' => 123,
        'id' => '27',
        'level' => '2',
        'name' => 'Desk Phones, Smartphones & Tablets',
      ),
      124 => 
      array (
        'key' => 124,
        'id' => '110',
        'level' => '3',
        'name' => 'Desk Phone',
      ),
      125 => 
      array (
        'key' => 125,
        'id' => '111',
        'level' => '3',
        'name' => 'Fax',
      ),
      126 => 
      array (
        'key' => 126,
        'id' => '247',
        'level' => '3',
        'name' => 'IP Phone Communicator Configuration',
      ),
      127 => 
      array (
        'key' => 127,
        'id' => '112',
        'level' => '3',
        'name' => 'IP Phone Communicator Help & How To',
      ),
      128 => 
      array (
        'key' => 128,
        'id' => '104',
        'level' => '3',
        'name' => 'Mobile and Smart phones',
      ),
      129 => 
      array (
        'key' => 129,
        'id' => '250',
        'level' => '3',
        'name' => 'Ordering an IP Phone and Headsets',
      ),
      130 => 
      array (
        'key' => 130,
        'id' => '107',
        'level' => '3',
        'name' => 'Synchronization with MS Outlook',
      ),
      131 => 
      array (
        'key' => 131,
        'id' => '108',
        'level' => '3',
        'name' => 'Tablets',
      ),
      132 => 
      array (
        'key' => 132,
        'id' => '113',
        'level' => '3',
        'name' => 'Teleconference solution choice',
      ),
      133 => 
      array (
        'key' => 133,
        'id' => '114',
        'level' => '3',
        'name' => 'Video phone',
      ),
      134 => 
      array (
        'key' => 134,
        'id' => '109',
        'level' => '3',
        'name' => 'Wifi Guest for Smartphone',
      ),
      135 => 
      array (
        'key' => 135,
        'id' => '18',
        'level' => '2',
        'name' => 'EMail and Collaboration',
      ),
      136 => 
      array (
        'key' => 136,
        'id' => '87',
        'level' => '3',
        'name' => 'Distribution lists',
      ),
      137 => 
      array (
        'key' => 137,
        'id' => '324',
        'level' => '3',
        'name' => 'Effective Collaboration',
      ),
      138 => 
      array (
        'key' => 138,
        'id' => '88',
        'level' => '3',
        'name' => 'Filtering spam',
      ),
      139 => 
      array (
        'key' => 139,
        'id' => '89',
        'level' => '3',
        'name' => 'Group mailbox',
      ),
      140 => 
      array (
        'key' => 140,
        'id' => '80',
        'level' => '3',
        'name' => 'Live Meeting',
      ),
      141 => 
      array (
        'key' => 141,
        'id' => '90',
        'level' => '3',
        'name' => 'Lotus Notes',
      ),
      142 => 
      array (
        'key' => 142,
        'id' => '81',
        'level' => '3',
        'name' => 'Office communicator',
      ),
      143 => 
      array (
        'key' => 143,
        'id' => '91',
        'level' => '3',
        'name' => 'Outlook Mailbox & calendar',
      ),
      144 => 
      array (
        'key' => 144,
        'id' => '92',
        'level' => '3',
        'name' => 'Securing email',
      ),
      145 => 
      array (
        'key' => 145,
        'id' => '83',
        'level' => '3',
        'name' => 'Videoconference',
      ),
      146 => 
      array (
        'key' => 146,
        'id' => '19',
        'level' => '2',
        'name' => 'Hardware',
      ),
      147 => 
      array (
        'key' => 147,
        'id' => '97',
        'level' => '3',
        'name' => 'Borrow hardware',
      ),
      148 => 
      array (
        'key' => 148,
        'id' => '98',
        'level' => '3',
        'name' => 'Buy Hardware',
      ),
      149 => 
      array (
        'key' => 149,
        'id' => '99',
        'level' => '3',
        'name' => 'Move hardware',
      ),
      150 => 
      array (
        'key' => 150,
        'id' => '100',
        'level' => '3',
        'name' => 'Protect computer',
      ),
      151 => 
      array (
        'key' => 151,
        'id' => '101',
        'level' => '3',
        'name' => 'Repair hardware',
      ),
      152 => 
      array (
        'key' => 152,
        'id' => '102',
        'level' => '3',
        'name' => 'Smartphone and Mobile Devices',
      ),
      153 => 
      array (
        'key' => 153,
        'id' => '103',
        'level' => '3',
        'name' => 'Upgrade computer',
      ),
      154 => 
      array (
        'key' => 154,
        'id' => '8',
        'level' => '2',
        'name' => 'IT for IT',
      ),
      155 => 
      array (
        'key' => 155,
        'id' => '35',
        'level' => '3',
        'name' => 'Application Infrastructure Provisioning',
      ),
      156 => 
      array (
        'key' => 156,
        'id' => '216',
        'level' => '3',
        'name' => 'Application, Process and Data Integration',
      ),
      157 => 
      array (
        'key' => 157,
        'id' => '42',
        'level' => '3',
        'name' => 'Connect to or from External Partners',
      ),
      158 => 
      array (
        'key' => 158,
        'id' => '36',
        'level' => '3',
        'name' => 'Data Center Operations and Facilities',
      ),
      159 => 
      array (
        'key' => 159,
        'id' => '37',
        'level' => '3',
        'name' => 'Database Services',
      ),
      160 => 
      array (
        'key' => 160,
        'id' => '47',
        'level' => '3',
        'name' => 'Hosting Services',
      ),
      161 => 
      array (
        'key' => 161,
        'id' => '321',
        'level' => '3',
        'name' => 'Infrastructure Services',
      ),
      162 => 
      array (
        'key' => 162,
        'id' => '39',
        'level' => '3',
        'name' => 'IT Audit and Risk',
      ),
      163 => 
      array (
        'key' => 163,
        'id' => '40',
        'level' => '3',
        'name' => 'Malicious Code Management',
      ),
      164 => 
      array (
        'key' => 164,
        'id' => '41',
        'level' => '3',
        'name' => 'Network Services',
      ),
      165 => 
      array (
        'key' => 165,
        'id' => '326',
        'level' => '3',
        'name' => 'Optimise Application Performance',
      ),
      166 => 
      array (
        'key' => 166,
        'id' => '28',
        'level' => '2',
        'name' => 'Printer, archiving & scanning',
      ),
      167 => 
      array (
        'key' => 167,
        'id' => '115',
        'level' => '3',
        'name' => 'Archiving',
      ),
      168 => 
      array (
        'key' => 168,
        'id' => '116',
        'level' => '3',
        'name' => 'Desk Printers',
      ),
      169 => 
      array (
        'key' => 169,
        'id' => '117',
        'level' => '3',
        'name' => 'Printing & scanning',
      ),
      170 => 
      array (
        'key' => 170,
        'id' => '74',
        'level' => '2',
        'name' => 'Remote Access Tokens',
      ),
      171 => 
      array (
        'key' => 171,
        'id' => '11',
        'level' => '2',
        'name' => 'Reporting and Data Management',
      ),
      172 => 
      array (
        'key' => 172,
        'id' => '55',
        'level' => '3',
        'name' => 'BI/DW (Business Intelligence/Data Warehouse)',
      ),
      173 => 
      array (
        'key' => 173,
        'id' => '242',
        'level' => '3',
        'name' => 'Business Objects Application',
      ),
      174 => 
      array (
        'key' => 174,
        'id' => '56',
        'level' => '3',
        'name' => 'CERPS Data Management Service (CDMO)',
      ),
      175 => 
      array (
        'key' => 175,
        'id' => '243',
        'level' => '3',
        'name' => 'Cognos Application',
      ),
      176 => 
      array (
        'key' => 176,
        'id' => '244',
        'level' => '3',
        'name' => 'Cognos Planning Application',
      ),
      177 => 
      array (
        'key' => 177,
        'id' => '245',
        'level' => '3',
        'name' => 'DataStage Application',
      ),
      178 => 
      array (
        'key' => 178,
        'id' => '246',
        'level' => '3',
        'name' => 'DataWarehouse Service',
      ),
      179 => 
      array (
        'key' => 179,
        'id' => '57',
        'level' => '3',
        'name' => 'ONE Service',
      ),
      180 => 
      array (
        'key' => 180,
        'id' => '29',
        'level' => '2',
        'name' => 'Software',
      ),
      181 => 
      array (
        'key' => 181,
        'id' => '313',
        'level' => '3',
        'name' => 'Manage AIT',
      ),
      182 => 
      array (
        'key' => 182,
        'id' => '124',
        'level' => '3',
        'name' => 'Requesting or Removing Software',
      ),
      183 => 
      array (
        'key' => 183,
        'id' => '30',
        'level' => '2',
        'name' => 'Wi-Fi & internet',
      ),
      184 => 
      array (
        'key' => 184,
        'id' => '131',
        'level' => '3',
        'name' => 'GSK network for business partners',
      ),
      185 => 
      array (
        'key' => 185,
        'id' => '132',
        'level' => '3',
        'name' => 'Wifi for visitors',
      ),
      186 => 
      array (
        'key' => 186,
        'id' => '133',
        'level' => '3',
        'name' => 'Wifi in the office',
      ),
      187 => 
      array (
        'key' => 187,
        'id' => '134',
        'level' => '3',
        'name' => 'Working from Home',
      ),
      188 => 
      array (
        'key' => 188,
        'id' => '135',
        'level' => '3',
        'name' => 'Working in the Office',
      ),
      189 => 
      array (
        'key' => 189,
        'id' => '5',
        'level' => '1',
        'name' => 'My Team',
      ),
      190 => 
      array (
        'key' => 190,
        'id' => '88',
        'level' => '2',
        'name' => 'Environment, Health & Safety',
      ),
      191 => 
      array (
        'key' => 191,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      192 => 
      array (
        'key' => 192,
        'id' => '89',
        'level' => '2',
        'name' => 'My Teams\' Conduct at Work',
      ),
      193 => 
      array (
        'key' => 193,
        'id' => '296',
        'level' => '3',
        'name' => 'Code of Conduct',
      ),
      194 => 
      array (
        'key' => 194,
        'id' => '294',
        'level' => '3',
        'name' => 'Disciplinary',
      ),
      195 => 
      array (
        'key' => 195,
        'id' => '270',
        'level' => '3',
        'name' => 'Dispute Resolution/Grievance',
      ),
      196 => 
      array (
        'key' => 196,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      197 => 
      array (
        'key' => 197,
        'id' => '90',
        'level' => '2',
        'name' => 'My Teams\' Employment Journey',
      ),
      198 => 
      array (
        'key' => 198,
        'id' => '301',
        'level' => '3',
        'name' => 'Changes',
      ),
      199 => 
      array (
        'key' => 199,
        'id' => '297',
        'level' => '3',
        'name' => 'Hiring',
      ),
      200 => 
      array (
        'key' => 200,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      201 => 
      array (
        'key' => 201,
        'id' => '275',
        'level' => '3',
        'name' => 'Leaving GSK',
      ),
      202 => 
      array (
        'key' => 202,
        'id' => '300',
        'level' => '3',
        'name' => 'Manage an International Assignment',
      ),
      203 => 
      array (
        'key' => 203,
        'id' => '141',
        'level' => '3',
        'name' => 'Onboarding',
      ),
      204 => 
      array (
        'key' => 204,
        'id' => '299',
        'level' => '3',
        'name' => 'Transfer/Promote/Change Job Permanent',
      ),
      205 => 
      array (
        'key' => 205,
        'id' => '298',
        'level' => '3',
        'name' => 'Transfer/Promote/Change Job Temporary',
      ),
      206 => 
      array (
        'key' => 206,
        'id' => '91',
        'level' => '2',
        'name' => 'Reporting , Data & Analytics',
      ),
      207 => 
      array (
        'key' => 207,
        'id' => 'TBC',
        'level' => '3',
        'name' => 'Learn More',
      ),
      208 => 
      array (
        'key' => 208,
        'id' => '304',
        'level' => '3',
        'name' => 'My Teams\' Information',
      ),
      209 => 
      array (
        'key' => 209,
        'id' => '303',
        'level' => '3',
        'name' => 'Workday Reporting',
      ),
      210 => 
      array (
        'key' => 210,
        'id' => '87',
        'level' => '2',
        'name' => 'Talent, Performance & Development',
      ),
      211 => 
      array (
        'key' => 211,
        'id' => '290',
        'level' => '3',
        'name' => 'Learning',
      ),
      212 => 
      array (
        'key' => 212,
        'id' => '291',
        'level' => '3',
        'name' => 'Performance & Development',
      ),
      213 => 
      array (
        'key' => 213,
        'id' => '292',
        'level' => '3',
        'name' => 'Talent',
      )
    )

Answer 1

您可以尝试使用 PHP 链接运算符 &，尝试这样的事情：

 $collection = array();
    $list = yourArray[];
    foreach ($list as $item) {
      if (isset($list[$item['key']])) {
        $list[$item['key']]['levels'][$item['key']] =& $list[$item['key']];
      } else {
         $collection[$item['key']] =& $list[$item['key']];
      }
    }

第二种变体

$row = array();
if (is_array($source) && !empty($source)) {
    foreach ($source as $item) {
        if (!isset($row[$item['level']])) {
            $row[$item['level']] = array($item['level']);
            $row[$item['level']]['parent'] = $item['level'] - 1;
        }
        if(isset($row[$item['level']])){
            $row[$item['level']]['child'][$item['key']] = $item;
        }
    }
    if(!empty($row)){
        foreach($row as $rowK => $rowV){
            if(isset($row[$rowV['parent']])){
                $row[$rowV['parent']]['level-' . $rowK][] =& $row[$rowK];
            } else {
                $collection[$rowK] =& $row[$rowK];
            }
        }
    }
}

Answer 2

递归实体从来都不是一件容易的事，尤其是当您开始使用 PHP 时。

以下是一个简短的函数，它通过使用 php 引用来避免使用递归函数。引用可能会令人困惑，递归也是如此。最好的建议是阅读并尝试一些事情，以了解他们的行为方式。

下面的工作使用一个跟踪级别的堆栈，并不断引用最后一个级别以找到最新的父级。

function stackItems( $items ){
  $level = 0;
  $return = array();
  $stack = array(&$return);
  foreach ( $items as $key => $item ) {
    while ( $level >= $item['level'] ) {
      unset($stack[$level--]);
    }
    $parent = &$stack[$level];
    if ( !isset($parent['children']) ) {
      $parent['children'] = array();
    }
    $parent['children'][] = &$items[$key];
    if ( $item['level'] > $level ) {
      $level = $item['level'];
      $stack[$level] = &$items[$key];
    }
  }
  return $return['children'];
}

带评论版本：

function stackItems( $items ){
  $level = 0;
  $return = array();
  /// build our stack with our return array as first item
  $stack = array(&$return);
  /// step each item
  foreach ( $items as $key => $item ) {
    /// if our next item is lower down than current 
    /// level, drop the stack down.
    while ( $level >= $item['level'] ) {
      /// we may as well unset to clear memory
      unset($stack[$level--]);
    }
    /// create a shortcut reference to our parent on the stack
    $parent = &$stack[$level];
    /// to avoid warnings create the children array first
    if ( !isset($parent['children']) ) {
      $parent['children'] = array();
    }
    /// now add ourselves to the current parent on the stack
    $parent['children'][] = &$items[$key];
    /// if our current item is higher level than current, add to
    /// the stack ready to be treated as the next parent.
    if ( $item['level'] > $level ) {
      /// level ourselves to the current item
      $level = $item['level'];
      /// store in the stack a reference to item
      $stack[$level] = &$items[$key];
    }
  }
  /// return the first set of children as there seems
  /// to be only one level 1 item.
  return $return['children'];
}

Answer 3

这就是我想出的......这不是一个非常有效的方法，但也许有人可以将它变成一个花哨的递归函数以使其抽象 - 我尝试了一点，但我真的很讨厌递归:-P

function cascade_array ($array, $current_level = 1) {

    // filter only the array elements with the level==current_level
    $chunks = array_filter ($array, function ($v) use ($current_level) { 
        return $v['level'] == 1; } 
    );

    // extract the keys from those elements an put them in reverse order
    $splice_keys = array_reverse(array_keys($chunks));

    // now splice the array at those keys and put the 
    // array-parts in a result-array, so you have an array of e.g. all level1
    foreach ($splice_keys as $offset) {

            $results[] = array_splice($array, $offset);
    }

    //now walk through the results and basically do the same
    foreach($results as &$level) {

        $level[0]['children'] = array();

        $array = array_splice($level, 1);
        $chunks = array_filter ($array, function ($v) use ($current_level) {  
            return $v['level'] == 2; } 
        );  
        $splice_keys = array_reverse(array_keys($chunks));

        foreach($splice_keys as $offset) {

            $level[0]['children'][] = array_splice($array, $offset);

        }


        foreach($level[0]['children'] as &$child_level) {

            $child_level[0]['children'] = array();

            $array = array_splice($child_level, 1);
            $chunks = array_filter ($array, function ($v) use ($current_level) {

                return $v['level'] == 3; } 
            );  
            $splice_keys = array_reverse(array_keys($chunks));

            foreach($splice_keys as $offset) {

                $child_level[0]['children'][] = array_splice($array, $offset);

            }

        }

    }

    return $results;

}

我猜代码实际上非常简单。这是一个工作示例：http ://codepad.viper-7.com/kb5JBc - 我希望它有所帮助:)