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<?php function gen1() { yield 11; yield 12; yield 13; } function gen2() { yield from gen1(); yield 21; yield 22; yield 23; } foreach (gen2() as $val) { echo "$val\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 8
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 8
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
filename:       /in/2cI36
function name:  (null)
number of ops:  10
compiled vars:  !0 = $val
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   16     0  E >   INIT_FCALL                                               'gen2'
          1        DO_FCALL                                      0  $1      
          2      > FE_RESET_R                                       $2      $1, ->8
          3    > > FE_FETCH_R                                               $2, !0, ->8
          4    >   NOP                                                      
          5        FAST_CONCAT                                      ~3      !0, '%0A'
          6        ECHO                                                     ~3
          7      > JMP                                                      ->3
          8    >   FE_FREE                                                  $2
          9      > RETURN                                                   1

Function gen1:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/2cI36
function name:  gen1
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   GENERATOR_CREATE                                         
    4     1        YIELD                                                    11
    5     2        YIELD                                                    12
    6     3        YIELD                                                    13
    7     4      > GENERATOR_RETURN                                         

End of function gen1

Function gen2:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/2cI36
function name:  gen2
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   GENERATOR_CREATE                                         
   10     1        INIT_FCALL                                               'gen1'
          2        DO_FCALL                                      0  $0      
          3        YIELD_FROM                                       ~1      $0
          4        FREE                                                     ~1
   11     5        YIELD                                                    21
   12     6        YIELD                                                    22
   13     7        YIELD                                                    23
   14     8      > GENERATOR_RETURN                                         

End of function gen2

Generated using Vulcan Logic Dumper, using php 8.0.0


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