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<?php $array = [ ['key' => 1], ['key' => 2], ['key' => 3], ['key' => 1], ['key' => 2], ['key' => 3], ['key' => 4], ['key' => 5], ['key' => 6] ]; var_export(array_values(array_column($array, 'key', 'key')));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PT3HD
function name:  (null)
number of ops:  13
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
   15     1        INIT_FCALL                                                   'var_export'
          2        INIT_FCALL                                                   'array_values'
          3        INIT_FCALL                                                   'array_column'
          4        SEND_VAR                                                     !0
          5        SEND_VAL                                                     'key'
          6        SEND_VAL                                                     'key'
          7        DO_ICALL                                             $2      
          8        SEND_VAR                                                     $2
          9        DO_ICALL                                             $3      
         10        SEND_VAR                                                     $3
         11        DO_ICALL                                                     
         12      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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