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<?php function gen1() { yield 1; yield 2; } function gen2() { $x = gen1(); yield 30; } foreach(gen2() as $val) { var_dump($val); }
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/dCHNj
function name:  (null)
number of ops:  10
compiled vars:  !0 = $val
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   INIT_FCALL                                               'gen2'
          1        DO_FCALL                                      0  $1      
          2      > FE_RESET_R                                       $2      $1, ->8
          3    > > FE_FETCH_R                                               $2, !0, ->8
   14     4    >   INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
   13     7      > JMP                                                      ->3
          8    >   FE_FREE                                                  $2
   15     9      > RETURN                                                   1

Function gen1:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/dCHNj
function name:  gen1
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   GENERATOR_CREATE                                         
    4     1        YIELD                                                    1
    5     2        YIELD                                                    2
    6     3      > 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/dCHNj
function name:  gen2
number of ops:  6
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   GENERATOR_CREATE                                         
    9     1        INIT_FCALL                                               'gen1'
          2        DO_FCALL                                      0  $1      
          3        ASSIGN                                                   !0, $1
   10     4        YIELD                                                    30
   11     5      > GENERATOR_RETURN                                         

End of function gen2

Generated using Vulcan Logic Dumper, using php 8.0.0


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164.87 ms | 1406 KiB | 18 Q