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<?php $array = [ (object)['label' => 'Test 1', 'session' => 2], (object)['label' => 'Test 2', 'session' => 2], (object)['label' => 'Test 3', 'session' => 42], (object)['label' => 'Test 4', 'session' => 9], ]; echo sizeof(array_column((array)$array, null, 'session'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/j1pIJ
function name:  (null)
number of ops:  18
compiled vars:  !0 = $array
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   CAST                                              8  ~1      <array>
          1        INIT_ARRAY                                           ~2      ~1
          2        CAST                                              8  ~3      <array>
          3        ADD_ARRAY_ELEMENT                                    ~2      ~3
          4        CAST                                              8  ~4      <array>
          5        ADD_ARRAY_ELEMENT                                    ~2      ~4
          6        CAST                                              8  ~5      <array>
          7        ADD_ARRAY_ELEMENT                                    ~2      ~5
    2     8        ASSIGN                                                       !0, ~2
    9     9        INIT_FCALL                                                   'array_column'
         10        CAST                                              7  ~7      !0
         11        SEND_VAL                                                     ~7
         12        SEND_VAL                                                     null
         13        SEND_VAL                                                     'session'
         14        DO_ICALL                                             $8      
         15        COUNT                                                ~9      $8
         16        ECHO                                                         ~9
         17      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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