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<?php $items = array(new \stdClass(), new \stdClass()); $udiff = array_udiff($items, $items, function ($a, $b) { if ($a < $b) return -1; if ($a > $b) return 1; return 0; }); var_dump($udiff);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FbWk3
function name:  (null)
number of ops:  18
compiled vars:  !0 = $items, !1 = $udiff
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $2      'stdClass'
          1        DO_FCALL                                      0          
          2        INIT_ARRAY                                       ~4      $2
          3        NEW                                              $5      'stdClass'
          4        DO_FCALL                                      0          
          5        ADD_ARRAY_ELEMENT                                ~4      $5
          6        ASSIGN                                                   !0, ~4
    5     7        INIT_FCALL                                               'array_udiff'
          8        SEND_VAR                                                 !0
          9        SEND_VAR                                                 !0
         10        DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FFbWk3%3A5%240'
    9    11        SEND_VAL                                                 ~8
         12        DO_ICALL                                         $9      
    5    13        ASSIGN                                                   !1, $9
   11    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FFbWk3%3A5%240:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 8
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FbWk3
function name:  {closure}
number of ops:  10
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    6     2        IS_SMALLER                                               !0, !1
          3      > JMPZ                                                     ~2, ->5
          4    > > RETURN                                                   -1
    7     5    >   IS_SMALLER                                               !1, !0
          6      > JMPZ                                                     ~3, ->8
          7    > > RETURN                                                   1
    8     8    > > RETURN                                                   0
    9     9*     > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FFbWk3%3A5%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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