3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo() { for ($i = 0; $i < 10 ; $i++) { yield $i; } } foo(); foo(); foreach (foo() as $f) { echo $f; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 10
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 10
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/8qJSv
function name:  (null)
number of ops:  12
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'foo'
          1        DO_FCALL                                      0          
    9     2        INIT_FCALL                                               'foo'
          3        DO_FCALL                                      0          
   11     4        INIT_FCALL                                               'foo'
          5        DO_FCALL                                      0  $3      
          6      > FE_RESET_R                                       $4      $3, ->10
          7    > > FE_FETCH_R                                               $4, !0, ->10
   12     8    >   ECHO                                                     !0
   11     9      > JMP                                                      ->7
         10    >   FE_FREE                                                  $4
   13    11      > 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/8qJSv
function name:  foo
number of ops:  8
compiled vars:  !0 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   GENERATOR_CREATE                                         
    3     1        ASSIGN                                                   !0, 0
          2      > JMP                                                      ->5
    4     3    >   YIELD                                                    !0
    3     4        PRE_INC                                                  !0
          5    >   IS_SMALLER                                               !0, 10
          6      > JMPNZ                                                    ~4, ->3
    6     7    > > GENERATOR_RETURN                                         

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
165.83 ms | 1402 KiB | 16 Q