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<?php function doStuff() { echo 'start'; $last = 0; $current = 1; yield 1; while ($current < 1000000) { echo 'loop'; $current = $last + $current; $last = $current - $last; echo 'before'; yield $current; echo 'after'; } } foreach(doStuff() as $num) $num; ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/FY03P
function name:  (null)
number of ops:  7
compiled vars:  !0 = $num
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   18     0  E >   INIT_FCALL                                               'dostuff'
          1        DO_FCALL                                      0  $1      
          2      > FE_RESET_R                                       $2      $1, ->5
          3    > > FE_FETCH_R                                               $2, !0, ->5
          4    > > JMP                                                      ->3
          5    >   FE_FREE                                                  $2
   20     6      > RETURN                                                   1

Function dostuff:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 6
Branch analysis from position: 16
1 jumps found. (Code = 161) Position 1 = -2
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 6
Branch analysis from position: 16
Branch analysis from position: 6
filename:       /in/FY03P
function name:  doStuff
number of ops:  17
compiled vars:  !0 = $last, !1 = $current
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   GENERATOR_CREATE                                         
    4     1        ECHO                                                     'start'
    5     2        ASSIGN                                                   !0, 0
    6     3        ASSIGN                                                   !1, 1
    7     4        YIELD                                                    1
    8     5      > JMP                                                      ->14
    9     6    >   ECHO                                                     'loop'
   10     7        ADD                                              ~5      !0, !1
          8        ASSIGN                                                   !1, ~5
   11     9        SUB                                              ~7      !1, !0
         10        ASSIGN                                                   !0, ~7
   12    11        ECHO                                                     'before'
   13    12        YIELD                                                    !1
   14    13        ECHO                                                     'after'
    8    14    >   IS_SMALLER                                               !1, 1000000
         15      > JMPNZ                                                    ~10, ->6
   16    16    > > GENERATOR_RETURN                                         

End of function dostuff

Generated using Vulcan Logic Dumper, using php 8.0.0


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