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<?php function f($n) { if ($n < 2) return $n; return $n * f(--$n); } echo f(20);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Z79Qi
function name:  (null)
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   INIT_FCALL                                               'f'
          1        SEND_VAL                                                 20
          2        DO_FCALL                                      0  $0      
          3        ECHO                                                     $0
          4      > RETURN                                                   1

Function f:
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/Z79Qi
function name:  f
number of ops:  11
compiled vars:  !0 = $n
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    4     1        IS_SMALLER                                               !0, 2
          2      > JMPZ                                                     ~1, ->4
          3    > > RETURN                                                   !0
    6     4    >   INIT_FCALL_BY_NAME                                       'f'
          5        PRE_DEC                                          ~2      !0
          6        SEND_VAL_EX                                              ~2
          7        DO_FCALL                                      0  $3      
          8        MUL                                              ~4      !0, $3
          9      > RETURN                                                   ~4
    7    10*     > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


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