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<?php $var = ["a" => false, "b" => NULL]; var_dump($var); foreach($var AS $key=>$val){ echo isset($var[$key]) ? "T":"F"; echo NULL === $val ? "T" : "F"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 20
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 20
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 17
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 18
Branch analysis from position: 18
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 17
Branch analysis from position: 15
Branch analysis from position: 17
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 20
filename:       /in/Shgq7
function name:  (null)
number of ops:  22
compiled vars:  !0 = $var, !1 = $val, !2 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    7     4      > FE_RESET_R                                       $5      !0, ->20
          5    > > FE_FETCH_R                                       ~6      $5, !1, ->20
          6    >   ASSIGN                                                   !2, ~6
    8     7        ISSET_ISEMPTY_DIM_OBJ                         0          !0, !2
          8      > JMPZ                                                     ~8, ->11
          9    >   QM_ASSIGN                                        ~9      'T'
         10      > JMP                                                      ->12
         11    >   QM_ASSIGN                                        ~9      'F'
         12    >   ECHO                                                     ~9
    9    13        TYPE_CHECK                                    2          !1
         14      > JMPZ                                                     ~10, ->17
         15    >   QM_ASSIGN                                        ~11     'T'
         16      > JMP                                                      ->18
         17    >   QM_ASSIGN                                        ~11     'F'
         18    >   ECHO                                                     ~11
    7    19      > JMP                                                      ->5
         20    >   FE_FREE                                                  $5
   10    21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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