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<?php function gen() { foreach(range(0, 10) as $i) yield $i; } $e = gen(); var_dump(iterator_count($e)); var_dump(iterator_count($e));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Ms71T
function name:  (null)
number of ops:  16
compiled vars:  !0 = $e
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'gen'
          1        DO_FCALL                                      0  $1      
          2        ASSIGN                                                   !0, $1
    9     3        INIT_FCALL                                               'var_dump'
          4        INIT_FCALL                                               'iterator_count'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $3      
          7        SEND_VAR                                                 $3
          8        DO_ICALL                                                 
   10     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL                                               'iterator_count'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                         $5      
         13        SEND_VAR                                                 $5
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Function gen:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
2 jumps found. (Code = 78) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 9
1 jumps found. (Code = 161) Position 1 = -2
Branch analysis from position: 9
filename:       /in/Ms71T
function name:  gen
number of ops:  11
compiled vars:  !0 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   GENERATOR_CREATE                                         
    5     1        INIT_FCALL                                               'range'
          2        SEND_VAL                                                 0
          3        SEND_VAL                                                 10
          4        DO_ICALL                                         $1      
          5      > FE_RESET_R                                       $2      $1, ->9
          6    > > FE_FETCH_R                                               $2, !0, ->9
          7    >   YIELD                                                    !0
          8      > JMP                                                      ->6
          9    >   FE_FREE                                                  $2
    6    10      > GENERATOR_RETURN                                         

End of function gen

Generated using Vulcan Logic Dumper, using php 8.0.0


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