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<?php function fib($n){ if($n == 1) { return 1; } return fib($n-1)+fib($n-2); } echo fib(3);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4eIEK
function name:  (null)
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'fib'
          1        SEND_VAL                                                 3
          2        DO_FCALL                                      0  $0      
          3        ECHO                                                     $0
          4      > RETURN                                                   1

Function fib:
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/4eIEK
function name:  fib
number of ops:  15
compiled vars:  !0 = $n
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        IS_EQUAL                                                 !0, 1
          2      > JMPZ                                                     ~1, ->4
          3    > > RETURN                                                   1
          4    >   INIT_FCALL_BY_NAME                                       'fib'
          5        SUB                                              ~2      !0, 1
          6        SEND_VAL_EX                                              ~2
          7        DO_FCALL                                      0  $3      
          8        INIT_FCALL_BY_NAME                                       'fib'
          9        SUB                                              ~4      !0, 2
         10        SEND_VAL_EX                                              ~4
         11        DO_FCALL                                      0  $5      
         12        ADD                                              ~6      $3, $5
         13      > RETURN                                                   ~6
         14*     > RETURN                                                   null

End of function fib

Generated using Vulcan Logic Dumper, using php 8.0.0


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