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<?php function fibo($n) { if ($n < 2) { return 1; } return fibo($n - 1) + fibo($n - 2); } echo fibo(1); echo fibo(2); echo fibo(3); echo fibo(4); echo fibo(5);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BjQBL
function name:  (null)
number of ops:  21
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   INIT_FCALL                                               'fibo'
          1        SEND_VAL                                                 1
          2        DO_FCALL                                      0  $0      
          3        ECHO                                                     $0
   13     4        INIT_FCALL                                               'fibo'
          5        SEND_VAL                                                 2
          6        DO_FCALL                                      0  $1      
          7        ECHO                                                     $1
   14     8        INIT_FCALL                                               'fibo'
          9        SEND_VAL                                                 3
         10        DO_FCALL                                      0  $2      
         11        ECHO                                                     $2
   15    12        INIT_FCALL                                               'fibo'
         13        SEND_VAL                                                 4
         14        DO_FCALL                                      0  $3      
         15        ECHO                                                     $3
   16    16        INIT_FCALL                                               'fibo'
         17        SEND_VAL                                                 5
         18        DO_FCALL                                      0  $4      
         19        ECHO                                                     $4
         20      > RETURN                                                   1

Function fibo:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 4
Branch analysis from position: 3
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BjQBL
function name:  fibo
number of ops:  15
compiled vars:  !0 = $n
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    5     1        IS_SMALLER                                               !0, 2
          2      > JMPZ                                                     ~1, ->4
    6     3    > > RETURN                                                   1
    9     4    >   INIT_FCALL_BY_NAME                                       'fibo'
          5        SUB                                              ~2      !0, 1
          6        SEND_VAL_EX                                              ~2
          7        DO_FCALL                                      0  $3      
          8        INIT_FCALL_BY_NAME                                       'fibo'
          9        SUB                                              ~4      !0, 2
         10        SEND_VAL_EX                                              ~4
         11        DO_FCALL                                      0  $5      
         12        ADD                                              ~6      $3, $5
         13      > RETURN                                                   ~6
   10    14*     > RETURN                                                   null

End of function fibo

Generated using Vulcan Logic Dumper, using php 8.0.0


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