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<?php //$var = 'A'; //$var = ''; //$var = null; $var = 0; if (! isset($var) || $var) { echo "set default"; //"not empty or not defiend or a null value"; } else { echo "not default"; //"empty"; } if (! isset($var) || ! empty($var)) { echo "set default"; } else { echo "not default"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
2 jumps found. (Code = 47) Position 1 = 12, Position 2 = 15
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 16, Position 2 = 18
Branch analysis from position: 16
1 jumps found. (Code = 42) Position 1 = 19
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
Branch analysis from position: 8
2 jumps found. (Code = 47) Position 1 = 12, Position 2 = 15
Branch analysis from position: 12
Branch analysis from position: 15
Branch analysis from position: 5
filename:       /in/goYrb
function name:  (null)
number of ops:  20
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ASSIGN                                                   !0, 0
    7     1        ISSET_ISEMPTY_CV                                 ~2      !0
          2        BOOL_NOT                                         ~3      ~2
          3      > JMPNZ_EX                                         ~3      ~3, ->5
          4    >   BOOL                                             ~3      !0
          5    > > JMPZ                                                     ~3, ->8
    8     6    >   ECHO                                                     'set+default'
          7      > JMP                                                      ->9
   10     8    >   ECHO                                                     'not+default'
   13     9    >   ISSET_ISEMPTY_CV                                 ~4      !0
         10        BOOL_NOT                                         ~5      ~4
         11      > JMPNZ_EX                                         ~5      ~5, ->15
         12    >   ISSET_ISEMPTY_CV                                 ~6      !0
         13        BOOL_NOT                                         ~7      ~6
         14        BOOL                                             ~5      ~7
         15    > > JMPZ                                                     ~5, ->18
   14    16    >   ECHO                                                     'set+default'
         17      > JMP                                                      ->19
   16    18    >   ECHO                                                     'not+default'
   17    19    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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