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<?php $arr1 = array( 1=>'val1', 2=>'val2', ); $arr2 = array( 1=>'num1', 2=>'num2', ); $array = array($arr1, $arr2); $newArr = array(array_column($array, 1), array_column($array, 2)); var_dump($newArr);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/RnuJ4
function name:  (null)
number of ops:  20
compiled vars:  !0 = $arr1, !1 = $arr2, !2 = $array, !3 = $newArr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    7     1        ASSIGN                                                   !1, <array>
   12     2        INIT_ARRAY                                       ~6      !0
          3        ADD_ARRAY_ELEMENT                                ~6      !1
          4        ASSIGN                                                   !2, ~6
   13     5        INIT_FCALL                                               'array_column'
          6        SEND_VAR                                                 !2
          7        SEND_VAL                                                 1
          8        DO_ICALL                                         $8      
          9        INIT_ARRAY                                       ~9      $8
         10        INIT_FCALL                                               'array_column'
         11        SEND_VAR                                                 !2
         12        SEND_VAL                                                 2
         13        DO_ICALL                                         $10     
         14        ADD_ARRAY_ELEMENT                                ~9      $10
         15        ASSIGN                                                   !3, ~9
   15    16        INIT_FCALL                                               'var_dump'
         17        SEND_VAR                                                 !3
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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