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<?php for($i=0;$i<256;$i++)for($j=0;$j<256;$j++)if ("1" === chr($i).chr($j)) echo"[$i $j]";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 2
Branch analysis from position: 25
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 2
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
2 jumps found. (Code = 44) Position 1 = 22, Position 2 = 4
Branch analysis from position: 22
2 jumps found. (Code = 44) Position 1 = 25, Position 2 = 2
Branch analysis from position: 25
Branch analysis from position: 2
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 19
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 22, Position 2 = 4
Branch analysis from position: 22
Branch analysis from position: 4
Branch analysis from position: 19
filename:       /in/qMSjX
function name:  (null)
number of ops:  26
compiled vars:  !0 = $i, !1 = $j
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
          1      > JMP                                                      ->23
          2    >   ASSIGN                                                   !1, 0
          3      > JMP                                                      ->20
          4    >   INIT_FCALL                                               'chr'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $4      
          7        INIT_FCALL                                               'chr'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                         $5      
         10        CONCAT                                           ~6      $4, $5
         11        IS_IDENTICAL                                             ~6, '1'
         12      > JMPZ                                                     ~7, ->19
         13    >   ROPE_INIT                                     5  ~9      '%5B'
         14        ROPE_ADD                                      1  ~9      ~9, !0
         15        ROPE_ADD                                      2  ~9      ~9, '+'
         16        ROPE_ADD                                      3  ~9      ~9, !1
         17        ROPE_END                                      4  ~8      ~9, '%5D'
         18        ECHO                                                     ~8
         19    >   PRE_INC                                                  !1
         20    >   IS_SMALLER                                               !1, 256
         21      > JMPNZ                                                    ~13, ->4
         22    >   PRE_INC                                                  !0
         23    >   IS_SMALLER                                               !0, 256
         24      > JMPNZ                                                    ~15, ->2
         25    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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196.78 ms | 1396 KiB | 15 Q