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<?php $flag = 'Elvis'; // true if ($flag) echo "{$flag} is true.\n"; $flag = 0; // false if (!$flag) echo "{$flag} is false.\n"; $flag = null; if ($flag) { echo "{$flag} is true.\n"; } if (!$flag) { echo "{$flag} is false.\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 2, Position 2 = 5
Branch analysis from position: 2
2 jumps found. (Code = 43) Position 1 = 8, Position 2 = 11
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 16
Branch analysis from position: 13
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 21
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 21
Branch analysis from position: 16
Branch analysis from position: 11
Branch analysis from position: 5
filename:       /in/ImPs3
function name:  (null)
number of ops:  22
compiled vars:  !0 = $flag
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'Elvis'
    3     1      > JMPZ                                                     !0, ->5
          2    >   NOP                                                      
          3        FAST_CONCAT                                      ~2      !0, '+is+true.%0A'
          4        ECHO                                                     ~2
    4     5    >   ASSIGN                                                   !0, 0
    5     6        BOOL_NOT                                         ~4      !0
          7      > JMPZ                                                     ~4, ->11
          8    >   NOP                                                      
          9        FAST_CONCAT                                      ~5      !0, '+is+false.%0A'
         10        ECHO                                                     ~5
    6    11    >   ASSIGN                                                   !0, null
    7    12      > JMPZ                                                     !0, ->16
    8    13    >   NOP                                                      
         14        FAST_CONCAT                                      ~7      !0, '+is+true.%0A'
         15        ECHO                                                     ~7
   10    16    >   BOOL_NOT                                         ~8      !0
         17      > JMPZ                                                     ~8, ->21
   11    18    >   NOP                                                      
         19        FAST_CONCAT                                      ~9      !0, '+is+false.%0A'
         20        ECHO                                                     ~9
   12    21    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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