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<?php $a = array( array('id' => 3, 'a' => 33), array('id' => 5, 'a' => 55), array('id' => 7, 'b' => 256), array('id' => new stdClass, 'a'=> 512), ); var_dump(array_column($a, null, 'id'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QsC4Z
function name:  (null)
number of ops:  18
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   INIT_ARRAY                                       ~1      <array>
          1        ADD_ARRAY_ELEMENT                                ~1      <array>
          2        ADD_ARRAY_ELEMENT                                ~1      <array>
    7     3        NEW                                              $2      'stdClass'
          4        DO_FCALL                                      0          
          5        INIT_ARRAY                                       ~4      $2, 'id'
          6        ADD_ARRAY_ELEMENT                                ~4      512, 'a'
          7        ADD_ARRAY_ELEMENT                                ~1      ~4
    3     8        ASSIGN                                                   !0, ~1
    9     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'array_column'
         11        SEND_VAR                                                 !0
         12        SEND_VAL                                                 null
         13        SEND_VAL                                                 'id'
         14        DO_ICALL                                         $6      
         15        SEND_VAR                                                 $6
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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