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<?php function gen() { yield 10 => "gen"; yield "another"; } function yf() { yield from gen(); yield from gen(); } foreach(yf() as $key => $val) { echo "$key => $val\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 11
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 11
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
filename:       /in/ZE8D6
function name:  (null)
number of ops:  13
compiled vars:  !0 = $val, !1 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   INIT_FCALL                                               'yf'
          1        DO_FCALL                                      0  $2      
          2      > FE_RESET_R                                       $3      $2, ->11
          3    > > FE_FETCH_R                                       ~4      $3, !0, ->11
          4    >   ASSIGN                                                   !1, ~4
   14     5        ROPE_INIT                                     4  ~7      !1
          6        ROPE_ADD                                      1  ~7      ~7, '+%3D%3E+'
          7        ROPE_ADD                                      2  ~7      ~7, !0
          8        ROPE_END                                      3  ~6      ~7, '%0A'
          9        ECHO                                                     ~6
   13    10      > JMP                                                      ->3
         11    >   FE_FREE                                                  $3
   15    12      > RETURN                                                   1

Function gen:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/ZE8D6
function name:  gen
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   GENERATOR_CREATE                                         
    4     1        YIELD                                                    'gen', 10
    5     2        YIELD                                                    'another'
    6     3      > GENERATOR_RETURN                                         

End of function gen

Function yf:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/ZE8D6
function name:  yf
number of ops:  10
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   GENERATOR_CREATE                                         
    9     1        INIT_FCALL                                               'gen'
          2        DO_FCALL                                      0  $0      
          3        YIELD_FROM                                       ~1      $0
          4        FREE                                                     ~1
   10     5        INIT_FCALL                                               'gen'
          6        DO_FCALL                                      0  $2      
          7        YIELD_FROM                                       ~3      $2
          8        FREE                                                     ~3
   11     9      > GENERATOR_RETURN                                         

End of function yf

Generated using Vulcan Logic Dumper, using php 8.0.0


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