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<?php $a = array_map(function($a) { return array_column($a, null); }, [['a' => 1]. ['b' => 2]]); var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cAK4i
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'array_map'
          1        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FcAK4i%3A3%240'
    5     2        SEND_VAL                                                 ~1
          3        CAST                                          6  ~2      <array>
          4        CAST                                          6  ~3      <array>
          5        CONCAT                                           ~4      ~2, ~3
          6        INIT_ARRAY                                       ~5      ~4
          7        SEND_VAL                                                 ~5
          8        DO_ICALL                                         $6      
    3     9        ASSIGN                                                   !0, $6
    6    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FcAK4i%3A3%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cAK4i
function name:  {closure}
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1        INIT_FCALL                                               'array_column'
          2        SEND_VAR                                                 !0
          3        SEND_VAL                                                 null
          4        DO_ICALL                                         $1      
          5      > RETURN                                                   $1
    5     6*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FcAK4i%3A3%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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