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<?php $str = '127.0.0.1:9'; $start = 500; $limit = 1300; for ($i = $start; $i < $limit; $i++) { echo $str . $i . "\n"; }
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 = 12, Position 2 = 5
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
2 jumps found. (Code = 44) Position 1 = 12, Position 2 = 5
Branch analysis from position: 12
Branch analysis from position: 5
filename:       /in/YJ3u0
function name:  (null)
number of ops:  13
compiled vars:  !0 = $str, !1 = $start, !2 = $limit, !3 = $i
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   ASSIGN                                                   !0, '127.0.0.1%3A9'
   4     1        ASSIGN                                                   !1, 500
   6     2        ASSIGN                                                   !2, 1300
   8     3        ASSIGN                                                   !3, !1
         4      > JMP                                                      ->10
   9     5    >   CONCAT                                           ~8      !0, !3
         6        CONCAT                                           ~9      ~8, '%0A'
         7        ECHO                                                     ~9
   8     8        POST_INC                                         ~10     !3
         9        FREE                                                     ~10
        10    >   IS_SMALLER_OR_EQUAL                              ~11     !3, !2
        11      > JMPNZ                                                    ~11, ->5
  10    12    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.4.0