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<?php $arr = Array ( 0 => Array ( 0 => 'Red', 1 => Steel ), 1 => Array ( 0 => 'Red', 1 => Wood ) , 2 => Array ( 0 => 'Blue', 1 => Wood ) ); $a = array_column($arr, 0);print_r($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/87E76
function name:  (null)
number of ops:  22
compiled vars:  !0 = $arr, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_ARRAY                                       ~2      'Red', 0
          1        FETCH_CONSTANT                                   ~3      'Steel'
          2        ADD_ARRAY_ELEMENT                                ~2      ~3, 1
          3        INIT_ARRAY                                       ~4      ~2, 0
    4     4        INIT_ARRAY                                       ~5      'Red', 0
          5        FETCH_CONSTANT                                   ~6      'Wood'
          6        ADD_ARRAY_ELEMENT                                ~5      ~6, 1
          7        ADD_ARRAY_ELEMENT                                ~4      ~5, 1
    5     8        INIT_ARRAY                                       ~7      'Blue', 0
          9        FETCH_CONSTANT                                   ~8      'Wood'
         10        ADD_ARRAY_ELEMENT                                ~7      ~8, 1
         11        ADD_ARRAY_ELEMENT                                ~4      ~7, 2
    3    12        ASSIGN                                                   !0, ~4
    7    13        INIT_FCALL                                               'array_column'
         14        SEND_VAR                                                 !0
         15        SEND_VAL                                                 0
         16        DO_ICALL                                         $10     
         17        ASSIGN                                                   !1, $10
         18        INIT_FCALL                                               'print_r'
         19        SEND_VAR                                                 !1
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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