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@ 2015-09-09T16:10:01Z

<?php
$a = [
        1 => [
            [
                'key' => 'fe',
                'name' => 'En plantilla a dedicación completa',
                'dedication' => 2,
                'relationship' =>2
            ],
            [
                'key' => 'ff',
                'name' => 'Freelance a dedicación completa',
                'dedication' => 2,
                'relationship' => 2
            ],
        ],
        2 => [
            [
                'name' => 'En Plantilla',
                'childs' => [
                    [
                        'key' => 'pem',
                        'name' => 'Mañanas',
                        'dedication' => 1,
                        'relationship' => 2,
                        'shiftPreference' => 3
                    ],
                    [
                        'key' => 'pea',
                        'name' => 'Tardes',
                        'dedication' => 1,
                        'relationship' => 2,
                        'shiftPreference' => 3
                    ],
                    [
                        'key' => 'ped',
                        'name' => 'Indistinto',
                        'dedication' => 4,
                        'relationship' => 5,
                        'shiftPreference' => 1
                    ],
                ],
            ],
            [
                'name' => 'Freelance',
                'childs' => [
                    [
                        'name' => 'Mañanas',
                        'childs' => [
                            [
                                'key' => 'pfmm',
                                'name' => 'Más de 3 horas/día',
                                'dedication' => 1,
                                'relationship' => 2,
                                'shiftPreference' => 3,
                                'hoursOfService' => 5
                            ],
                            [
                                'key' => 'pfml',
                                'name' => 'Menos de 3 horas/día',
                                'parent' => 8,
                                'dedication' => 2,
                                'relationship' => 5,
                                'shiftPreference' => 32,
                                'hoursOfService' => 32
                            ],
                        ],
                    ],
                    [
                        'name' => 'Tardes',
                        'childs' => [
                            [
                                'key' => 'pfam',
                                'name' => 'Más de 3 horas/día',
                                'dedication' => 1,
                                'relationship' => 2,
                                'shiftPreference' => 6,
                                'hoursOfService' => 4
                            ],
                            [
                                'key' => 'pfal',
                                'name' => 'Menos de 3 horas/día',
                                'dedication' => 3,
                                'relationship' => 5,
                                'shiftPreference' => 3,
                                'hoursOfService' => 1
                            ],
                        ],
                    ],
                    [
                        'name' => 'Indistinto',
                        'childs' => [
                            [
                                'key' => 'pfdm',
                                'name' => 'Más de 3 horas/día',
                                'dedication' => 21,
                                'relationship' => 6,
                                'shiftPreference' => 25,
                                'hoursOfService' => 2
                            ],
                            [
                                'key' => 'pfdl',
                                'name' => 'Menos de 3 horas/día',
                                'dedication' => 434,
                                'relationship' => 2245243,
                                'shiftPreference' => 543,
                                'hoursOfService' => 324
                            ],
                        ],
                    ],
                ],
            ],
        ],
    ];
    
     $results = $a[1];
        array_walk_recursive($results, function(&$a){
            unset($a['dedication'], $a['relationship'], $a['shiftPreference'], $a['hoursOfService']);
        });
        
        var_dump($results);
        var_dump($a);

Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4LdKf
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a, !1 = $results
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
  116     1        FETCH_DIM_R                                      ~3      !0, 1
          2        ASSIGN                                                   !1, ~3
  117     3        INIT_FCALL                                               'array_walk_recursive'
          4        SEND_REF                                                 !1
          5        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2F4LdKf%3A117%240'
  119     6        SEND_VAL                                                 ~5
          7        DO_ICALL                                                 
  121     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
  122    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !0
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2F4LdKf%3A117%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4LdKf
function name:  {closure}
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
  117     0  E >   RECV                                             !0      
  118     1        UNSET_DIM                                                !0, 'dedication'
          2        UNSET_DIM                                                !0, 'relationship'
          3        UNSET_DIM                                                !0, 'shiftPreference'
          4        UNSET_DIM                                                !0, 'hoursOfService'
  119     5      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2F4LdKf%3A117%240

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