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<?php function foo () { for ($i = 0; $i < 10; $i++) { yield $i; } } while (foo()->valid()) { foo()->next(); echo foo()->current(); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 1
Branch analysis from position: 15
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 1
2 jumps found. (Code = 44) Position 1 = 15, Position 2 = 1
Branch analysis from position: 15
Branch analysis from position: 1
filename:       /in/137uX
function name:  (null)
number of ops:  16
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E > > JMP                                                      ->10
   10     1    >   INIT_FCALL                                               'foo'
          2        DO_FCALL                                      0  $0      
          3        INIT_METHOD_CALL                                         $0, 'next'
          4        DO_FCALL                                      0          
   11     5        INIT_FCALL                                               'foo'
          6        DO_FCALL                                      0  $2      
          7        INIT_METHOD_CALL                                         $2, 'current'
          8        DO_FCALL                                      0  $3      
          9        ECHO                                                     $3
    9    10    >   INIT_FCALL                                               'foo'
         11        DO_FCALL                                      0  $4      
         12        INIT_METHOD_CALL                                         $4, 'valid'
         13        DO_FCALL                                      0  $5      
         14      > JMPNZ                                                    $5, ->1
   12    15    > > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
2 jumps found. (Code = 44) Position 1 = 7, Position 2 = 3
Branch analysis from position: 7
1 jumps found. (Code = 161) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 7, Position 2 = 3
Branch analysis from position: 7
Branch analysis from position: 3
filename:       /in/137uX
function name:  foo
number of ops:  8
compiled vars:  !0 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   GENERATOR_CREATE                                         
    4     1        ASSIGN                                                   !0, 0
          2      > JMP                                                      ->5
    5     3    >   YIELD                                                    !0
    4     4        PRE_INC                                                  !0
          5    >   IS_SMALLER                                               !0, 10
          6      > JMPNZ                                                    ~4, ->3
    7     7    > > GENERATOR_RETURN                                         

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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