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<?php function chain(...$iters) { foreach ($iters as $iter) { yield from $iter; } } $gen = (function() { yield 1; yield 2; yield 3; return 4; })(); $repeatedTwice = chain($gen, $gen); foreach ($repeatedTwice as $v) var_dump($v);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 10, Position 2 = 15
Branch analysis from position: 10
2 jumps found. (Code = 78) Position 1 = 11, Position 2 = 15
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 15
filename:       /in/l2BY9
function name:  (null)
number of ops:  17
compiled vars:  !0 = $gen, !1 = $repeatedTwice, !2 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2Fl2BY9%3A9%240'
          1        INIT_DYNAMIC_CALL                                        ~3
          2        DO_FCALL                                      0  $4      
          3        ASSIGN                                                   !0, $4
   10     4        INIT_FCALL                                               'chain'
          5        SEND_VAR                                                 !0
          6        SEND_VAR                                                 !0
          7        DO_FCALL                                      0  $6      
          8        ASSIGN                                                   !1, $6
   11     9      > FE_RESET_R                                       $8      !1, ->15
         10    > > FE_FETCH_R                                               $8, !2, ->15
         11    >   INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !2
         13        DO_ICALL                                                 
         14      > JMP                                                      ->10
         15    >   FE_FREE                                                  $8
         16      > RETURN                                                   1

Function chain:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 7
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 7
1 jumps found. (Code = 161) Position 1 = -2
Branch analysis from position: 7
filename:       /in/l2BY9
function name:  chain
number of ops:  9
compiled vars:  !0 = $iters, !1 = $iter
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_VARIADIC                                    !0      
          1        GENERATOR_CREATE                                         
    4     2      > FE_RESET_R                                       $2      !0, ->7
          3    > > FE_FETCH_R                                               $2, !1, ->7
    5     4    >   YIELD_FROM                                       ~3      !1
          5        FREE                                                     ~3
    4     6      > JMP                                                      ->3
          7    >   FE_FREE                                                  $2
    7     8      > GENERATOR_RETURN                                         

End of function chain

Function %00%7Bclosure%7D%2Fin%2Fl2BY9%3A9%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 161) Position 1 = -2
filename:       /in/l2BY9
function name:  {closure}
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   GENERATOR_CREATE                                         
          1        YIELD                                                    1
          2        YIELD                                                    2
          3        YIELD                                                    3
          4      > GENERATOR_RETURN                                         
          5*     > GENERATOR_RETURN                                         

End of function %00%7Bclosure%7D%2Fin%2Fl2BY9%3A9%240

Generated using Vulcan Logic Dumper, using php 8.0.0


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