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<?php $array = array ( 0 => array ( 0 => array ( 0 => array ( 'dataAula' => '2020-09-21', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 4, ), ), 1 => array ( 1 => array ( 'dataAula' => '2020-09-22', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 8, ), ), 2 => array ( 2 => array ( 'dataAula' => '2020-09-28', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 12, ), ), 3 => array ( 3 => array ( 'dataAula' => '2020-09-29', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 16, ), ), 4 => array ( 4 => array ( 'dataAula' => '2020-10-06', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 20, ), ), 5 => array ( 5 => array ( 'dataAula' => '2020-10-12', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 24, ), ), 6 => array ( 6 => array ( 'dataAula' => '2020-10-13', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 28, ), ), 7 => array ( 7 => array ( 'dataAula' => '2020-10-19', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 32, ), ), 8 => array ( 8 => array ( 'dataAula' => '2020-10-20', 'tempos' => 1, 'tempos2' => 'Terça', 'total' => 33, ), ), ), 1 => array ( 0 => array ( 0 => array ( 'dataAula' => '2020-10-20', 'tempos' => 3, 'tempos2' => 'Segunda', 'total' => 3, ), ), 1 => array ( 1 => array ( 'dataAula' => '2020-10-27', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 7, ), ), 2 => array ( 2 => array ( 'dataAula' => '2020-11-02', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 11, ), ), 3 => array ( 3 => array ( 'dataAula' => '2020-11-03', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 15, ), ), 4 => array ( 4 => array ( 'dataAula' => '2020-11-09', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 19, ), ), 5 => array ( 5 => array ( 'dataAula' => '2020-11-10', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 23, ), ), 6 => array ( 6 => array ( 'dataAula' => '2020-11-16', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 27, ), ), 7 => array ( 7 => array ( 'dataAula' => '2020-11-17', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 31, ), ), 8 => array ( 8 => array ( 'dataAula' => '2020-11-23', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 35, ), ), 9 => array ( 9 => array ( 'dataAula' => '2020-11-24', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 39, ), ), 10 => array ( 10 => array ( 'dataAula' => '2020-11-30', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 43, ), ), 11 => array ( 11 => array ( 'dataAula' => '2020-12-07', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 47, ), ), 12 => array ( 12 => array ( 'dataAula' => '2020-12-14', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 51, ), ), 13 => array ( 13 => array ( 'dataAula' => '2020-12-15', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 55, ), ), 14 => array ( 14 => array ( 'dataAula' => '2021-01-04', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 59, ), ), 15 => array ( 15 => array ( 'dataAula' => '2021-01-05', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 63, ), ), 16 => array ( 16 => array ( 'dataAula' => '2021-01-11', 'tempos' => 4, 'tempos2' => 'Segunda', 'total' => 67, ), ), ), 2 => array ( 0 => array ( 0 => array ( 'dataAula' => '2021-01-12', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 4, ), ), 1 => array ( 1 => array ( 'dataAula' => '2021-01-18', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 8, ), ), 2 => array ( 2 => array ( 'dataAula' => '2021-01-19', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 12, ), ), 3 => array ( 3 => array ( 'dataAula' => '2021-01-25', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 16, ), ), 4 => array ( 4 => array ( 'dataAula' => '2021-01-26', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 20, ), ), 5 => array ( 5 => array ( 'dataAula' => '2021-02-01', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 24, ), ), 6 => array ( 6 => array ( 'dataAula' => '2021-02-02', 'tempos' => '4', 'tempos2' => 'Terça', 'total' => 28, ), ), 7 => array ( 7 => array ( 'dataAula' => '2021-02-08', 'tempos' => '4', 'tempos2' => 'Segunda', 'total' => 32, ), ), 8 => array ( 8 => array ( 'dataAula' => '2021-02-09', 'tempos' => 1, 'tempos2' => 'Terça', 'total' => 33, ), ), ), ); $result = []; //Loop over list $array, each item of which is another list. foreach ($array as $level1){ //Loop over the sub-list. foreach ($level1 as $level2){ //$level2 is a single-element array with the same index as it's parent. Extract that single element. $level2 = current($level2); $date = $level2['dataAula']; if (isset($result[$date])){ $result[$date]['tempos'] .= '+' . $level2['tempos']; } else { $result[$date] = $level2; } } } var_export($result);

Abusive script

This script was stopped while abusing our resources

Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 25
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 25
Branch analysis from position: 4
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 23
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 23
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 20
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 22
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 23
Branch analysis from position: 25
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 25
filename:       /in/Mth6U
function name:  (null)
number of ops:  30
compiled vars:  !0 = $array, !1 = $result, !2 = $level1, !3 = $level2, !4 = $date
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
  365     1        ASSIGN                                                   !1, <array>
  367     2      > FE_RESET_R                                       $7      !0, ->25
          3    > > FE_FETCH_R                                               $7, !2, ->25
  369     4    > > FE_RESET_R                                       $8      !2, ->23
          5    > > FE_FETCH_R                                               $8, !3, ->23
  371     6    >   INIT_FCALL                                               'current'
          7        SEND_VAR                                                 !3
          8        DO_ICALL                                         $9      
          9        ASSIGN                                                   !3, $9
  372    10        FETCH_DIM_R                                      ~11     !3, 'dataAula'
         11        ASSIGN                                                   !4, ~11
  373    12        ISSET_ISEMPTY_DIM_OBJ                         0          !1, !4
         13      > JMPZ                                                     ~13, ->20
  374    14    >   FETCH_DIM_R                                      ~16     !3, 'tempos'
         15        CONCAT                                           ~17     '%2B', ~16
         16        FETCH_DIM_RW                                     $14     !1, !4
         17        ASSIGN_DIM_OP                .=               8          $14, 'tempos'
         18        OP_DATA                                                  ~17
  373    19      > JMP                                                      ->22
  376    20    >   ASSIGN_DIM                                               !1, !4
         21        OP_DATA                                                  !3
  369    22    > > JMP                                                      ->5
         23    >   FE_FREE                                                  $8
  367    24      > JMP                                                      ->3
         25    >   FE_FREE                                                  $7
  381    26        INIT_FCALL                                               'var_export'
         27        SEND_VAR                                                 !1
         28        DO_ICALL                                                 
         29      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0

preferences:
148.75 ms | 1007 KiB | 15 Q