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<?php function f($n){ return $n<2 ? 2 : f($n-1)+f($n-2); } echo f(5),"\n"; echo f(4),"\n"; echo f(3),"\n"; echo f(2),"\n"; echo f(1),"\n"; echo f(0),"\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NUnD3
function name:  (null)
number of ops:  31
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'f'
          1        SEND_VAL                                                 5
          2        DO_FCALL                                      0  $0      
          3        ECHO                                                     $0
          4        ECHO                                                     '%0A'
    7     5        INIT_FCALL                                               'f'
          6        SEND_VAL                                                 4
          7        DO_FCALL                                      0  $1      
          8        ECHO                                                     $1
          9        ECHO                                                     '%0A'
    8    10        INIT_FCALL                                               'f'
         11        SEND_VAL                                                 3
         12        DO_FCALL                                      0  $2      
         13        ECHO                                                     $2
         14        ECHO                                                     '%0A'
    9    15        INIT_FCALL                                               'f'
         16        SEND_VAL                                                 2
         17        DO_FCALL                                      0  $3      
         18        ECHO                                                     $3
         19        ECHO                                                     '%0A'
   10    20        INIT_FCALL                                               'f'
         21        SEND_VAL                                                 1
         22        DO_FCALL                                      0  $4      
         23        ECHO                                                     $4
         24        ECHO                                                     '%0A'
   11    25        INIT_FCALL                                               'f'
         26        SEND_VAL                                                 0
         27        DO_FCALL                                      0  $5      
         28        ECHO                                                     $5
         29        ECHO                                                     '%0A'
         30      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NUnD3
function name:  f
number of ops:  17
compiled vars:  !0 = $n
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        IS_SMALLER                                               !0, 2
          2      > JMPZ                                                     ~1, ->5
          3    >   QM_ASSIGN                                        ~2      2
          4      > JMP                                                      ->15
          5    >   INIT_FCALL_BY_NAME                                       'f'
          6        SUB                                              ~3      !0, 1
          7        SEND_VAL_EX                                              ~3
          8        DO_FCALL                                      0  $4      
          9        INIT_FCALL_BY_NAME                                       'f'
         10        SUB                                              ~5      !0, 2
         11        SEND_VAL_EX                                              ~5
         12        DO_FCALL                                      0  $6      
         13        ADD                                              ~7      $4, $6
         14        QM_ASSIGN                                        ~2      ~7
         15    > > RETURN                                                   ~2
    4    16*     > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


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