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<?php $f = NAN; var_dump(++$f); // float NAN var_dump((float) NAN); // float NAN var_dump((int) NAN); // int -2147483648 -> what? var_dump((bool) NAN); // bool true -> makes sense $f = INF; var_dump(++$f); // float INF var_dump((float) INF); // float INF var_dump((int) INF); // int 0 -> what? var_dump((bool) INF); // bool true -> so why int 0? var_dump((int) (bool) INF); // int 1
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0C69T
function name:  (null)
number of ops:  40
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, NAN
    4     1        INIT_FCALL                                               'var_dump'
          2        PRE_INC                                          ~2      !0
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
    5     5        INIT_FCALL                                               'var_dump'
          6        CAST                                          5  ~4      NAN
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
    6     9        INIT_FCALL                                               'var_dump'
         10        CAST                                          4  ~6      NAN
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
    7    13        INIT_FCALL                                               'var_dump'
         14        BOOL                                             ~8      NAN
         15        SEND_VAL                                                 ~8
         16        DO_ICALL                                                 
    9    17        ASSIGN                                                   !0, INF
   10    18        INIT_FCALL                                               'var_dump'
         19        PRE_INC                                          ~11     !0
         20        SEND_VAL                                                 ~11
         21        DO_ICALL                                                 
   11    22        INIT_FCALL                                               'var_dump'
         23        CAST                                          5  ~13     INF
         24        SEND_VAL                                                 ~13
         25        DO_ICALL                                                 
   12    26        INIT_FCALL                                               'var_dump'
         27        CAST                                          4  ~15     INF
         28        SEND_VAL                                                 ~15
         29        DO_ICALL                                                 
   13    30        INIT_FCALL                                               'var_dump'
         31        BOOL                                             ~17     INF
         32        SEND_VAL                                                 ~17
         33        DO_ICALL                                                 
   14    34        INIT_FCALL                                               'var_dump'
         35        BOOL                                             ~19     INF
         36        CAST                                          4  ~20     ~19
         37        SEND_VAL                                                 ~20
         38        DO_ICALL                                                 
         39      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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