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<?php $result = array_reduce(range(25200, 68400, 900), function(&$cur, $x) { $cur[date('H:i', $x)] = date('g:ia', $x); return $cur; }, []); var_dump($result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JrTfA
function name:  (null)
number of ops:  16
compiled vars:  !0 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'array_reduce'
          1        INIT_FCALL                                               'range'
          2        SEND_VAL                                                 25200
          3        SEND_VAL                                                 68400
          4        SEND_VAL                                                 900
          5        DO_ICALL                                         $1      
          6        SEND_VAR                                                 $1
          7        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FJrTfA%3A3%240'
    7     8        SEND_VAL                                                 ~2
          9        SEND_VAL                                                 <array>
         10        DO_ICALL                                         $3      
    3    11        ASSIGN                                                   !0, $3
    9    12        INIT_FCALL                                               'var_dump'
         13        SEND_VAR                                                 !0
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FJrTfA%3A3%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JrTfA
function name:  {closure}
number of ops:  14
compiled vars:  !0 = $cur, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        INIT_FCALL                                               'date'
          3        SEND_VAL                                                 'H%3Ai'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $2      
          6        INIT_FCALL                                               'date'
          7        SEND_VAL                                                 'g%3Aia'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                         $4      
         10        ASSIGN_DIM                                               !0, $2
         11        OP_DATA                                                  $4
    6    12      > RETURN                                                   !0
    7    13*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FJrTfA%3A3%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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