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<?php $a = 'vskutku?'; echo (!isset($a['foo']) || empty($a['foo'])) ? 'true ' : 'false'; echo empty($a['foo']) ? 'true ' : 'false';
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 4, Position 2 = 6
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 15
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 16
Branch analysis from position: 16
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 15
Branch analysis from position: 13
Branch analysis from position: 15
Branch analysis from position: 6
filename:       /in/bogo7
function name:  (null)
number of ops:  18
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'vskutku%3F'
          1        ISSET_ISEMPTY_DIM_OBJ                             0  ~2      !0, 'foo'
          2        BOOL_NOT                                             ~3      ~2
          3      > JMPNZ_EX                                             ~3      ~3, ->6
          4    >   ISSET_ISEMPTY_DIM_OBJ                             1  ~4      !0, 'foo'
          5        BOOL                                                 ~3      ~4
          6    > > JMPZ                                                         ~3, ->9
          7    >   QM_ASSIGN                                            ~5      'true+'
          8      > JMP                                                          ->10
          9    >   QM_ASSIGN                                            ~5      'false'
         10    >   ECHO                                                         ~5
         11        ISSET_ISEMPTY_DIM_OBJ                             1          !0, 'foo'
         12      > JMPZ                                                         ~6, ->15
         13    >   QM_ASSIGN                                            ~7      'true+'
         14      > JMP                                                          ->16
         15    >   QM_ASSIGN                                            ~7      'false'
         16    >   ECHO                                                         ~7
         17      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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