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<?php $array = [ [ ["2011-11-18 00:00:00" => 'C'], ["2011-11-18 00:00:00" => 'I'], ["2011-11-18 00:00:00" => 'S'], ], [ ["2011-11-22 00:00:00" => 'C'], ["2011-11-22 00:00:00" => 'S'] ] ]; var_export( array_reduce( $array, fn($result, $set) => $result + [key($set[0]) => count($set)], [] ) );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fP0C2
function name:  (null)
number of ops:  11
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   15     1        INIT_FCALL                                               'var_export'
   16     2        INIT_FCALL                                               'array_reduce'
   17     3        SEND_VAR                                                 !0
   18     4        DECLARE_LAMBDA_FUNCTION                          ~2      [0]
          5        SEND_VAL                                                 ~2
   19     6        SEND_VAL                                                 <array>
   16     7        DO_ICALL                                         $3      
   19     8        SEND_VAR                                                 $3
   15     9        DO_ICALL                                                 
   21    10      > RETURN                                                   1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fP0C2
function name:  {closure}
number of ops:  11
compiled vars:  !0 = $result, !1 = $set
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        INIT_FCALL                                               'key'
          3        FETCH_DIM_R                                      ~2      !1, 0
          4        SEND_VAL                                                 ~2
          5        DO_ICALL                                         $3      
          6        COUNT                                            ~4      !1
          7        INIT_ARRAY                                       ~5      ~4, $3
          8        ADD                                              ~6      !0, ~5
          9      > RETURN                                                   ~6
         10*     > RETURN                                                   null

End of Dynamic Function 0

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