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<?php (function () { $a = 'foo'; var_dump(array_key_exists('a', get_defined_vars())); var_dump(array_key_exists('b', get_defined_vars())); })();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XagEA
function name:  (null)
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FXagEA%3A3%240'
    8     1        INIT_DYNAMIC_CALL                                        ~0
          2        DO_FCALL                                      0          
          3      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FXagEA%3A3%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XagEA
function name:  {closure}
number of ops:  14
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ASSIGN                                                   !0, 'foo'
    6     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'get_defined_vars'
          3        DO_ICALL                                         $2      
          4        ARRAY_KEY_EXISTS                                 ~3      'a', $2
          5        SEND_VAL                                                 ~3
          6        DO_ICALL                                                 
    7     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'get_defined_vars'
          9        DO_ICALL                                         $5      
         10        ARRAY_KEY_EXISTS                                 ~6      'b', $5
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
    8    13      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FXagEA%3A3%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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