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<?php $config = array('default' => ['test']); $result = null; $bingo = null === $result && isset($config['default']); var_dump($bingo);die();
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
1 jumps found. (Code = 79) Position 1 = -2
Branch analysis from position: 6
filename:       /in/S34TV
function name:  (null)
number of ops:  12
compiled vars:  !0 = $config, !1 = $result, !2 = $bingo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, null
    4     2        TYPE_CHECK                                    2  ~5      !1
          3      > JMPZ_EX                                          ~5      ~5, ->6
          4    >   ISSET_ISEMPTY_DIM_OBJ                         0  ~6      !0, 'default'
          5        BOOL                                             ~5      ~6
          6    >   ASSIGN                                                   !2, ~5
    6     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !2
          9        DO_ICALL                                                 
         10      > EXIT                                                     
         11*     > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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