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<?php $res = []; $arr = array("exercise__2" => "Then a set", "sets__2" => 3, "exercise__4" => "And finally a set", "sets__4" => 3); foreach($arr as $k =>$v) { $res[explode("__", $k)[1]][$k] = $v; } print_r(array_values($res));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 14
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/bBN5v
function name:  (null)
number of ops:  22
compiled vars:  !0 = $res, !1 = $arr, !2 = $v, !3 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
    5     2      > FE_RESET_R                                       $6      !1, ->14
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->14
          4    >   ASSIGN                                                   !3, ~7
    6     5        INIT_FCALL                                               'explode'
          6        SEND_VAL                                                 '__'
          7        SEND_VAR                                                 !3
          8        DO_ICALL                                         $9      
          9        FETCH_DIM_R                                      ~10     $9, 1
         10        FETCH_DIM_W                                      $11     !0, ~10
         11        ASSIGN_DIM                                               $11, !3
         12        OP_DATA                                                  !2
    5    13      > JMP                                                      ->3
         14    >   FE_FREE                                                  $6
    8    15        INIT_FCALL                                               'print_r'
         16        INIT_FCALL                                               'array_values'
         17        SEND_VAR                                                 !0
         18        DO_ICALL                                         $13     
         19        SEND_VAR                                                 $13
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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