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<?php $ldq = preg_quote('{', '~'); $rdq = preg_quote('}', '~'); $search = "~{$ldq}\*(.*?)\*{$rdq}|{$ldq}\s*literal\s*{$rdq}(.*?){$ldq}\s*/literal\s*{$rdq}|{$ldq}\s*php\s*{$rdq}(.*?){$ldq}\s*/php\s*{$rdq}~s"; $source_content = '{literal}<script type="javascript">alert(\'foo\');</script>{/literal}'; $source_content = preg_replace($search.'e', "'" . $ldq . 'php' . "' . str_repeat(\"\n\", substr_count('\\0', \"\n\")) .'" . $rdq . "'" , $source_content); echo $source_content;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/l6Yah
function name:  (null)
number of ops:  47
compiled vars:  !0 = $ldq, !1 = $rdq, !2 = $search, !3 = $source_content
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_quote'
          1        SEND_VAL                                                 '%7B'
          2        SEND_VAL                                                 '%7E'
          3        DO_ICALL                                         $4      
          4        ASSIGN                                                   !0, $4
    4     5        INIT_FCALL                                               'preg_quote'
          6        SEND_VAL                                                 '%7D'
          7        SEND_VAL                                                 '%7E'
          8        DO_ICALL                                         $6      
          9        ASSIGN                                                   !1, $6
    6    10        ROPE_INIT                                    21  ~9      '%7E'
         11        ROPE_ADD                                      1  ~9      ~9, !0
         12        ROPE_ADD                                      2  ~9      ~9, '%5C%2A%28.%2A%3F%29%5C%2A'
         13        ROPE_ADD                                      3  ~9      ~9, !1
         14        ROPE_ADD                                      4  ~9      ~9, '%7C'
         15        ROPE_ADD                                      5  ~9      ~9, !0
         16        ROPE_ADD                                      6  ~9      ~9, '%5Cs%2Aliteral%5Cs%2A'
         17        ROPE_ADD                                      7  ~9      ~9, !1
         18        ROPE_ADD                                      8  ~9      ~9, '%28.%2A%3F%29'
         19        ROPE_ADD                                      9  ~9      ~9, !0
         20        ROPE_ADD                                     10  ~9      ~9, '%5Cs%2A%2Fliteral%5Cs%2A'
         21        ROPE_ADD                                     11  ~9      ~9, !1
         22        ROPE_ADD                                     12  ~9      ~9, '%7C'
         23        ROPE_ADD                                     13  ~9      ~9, !0
         24        ROPE_ADD                                     14  ~9      ~9, '%5Cs%2Aphp%5Cs%2A'
         25        ROPE_ADD                                     15  ~9      ~9, !1
         26        ROPE_ADD                                     16  ~9      ~9, '%28.%2A%3F%29'
         27        ROPE_ADD                                     17  ~9      ~9, !0
         28        ROPE_ADD                                     18  ~9      ~9, '%5Cs%2A%2Fphp%5Cs%2A'
         29        ROPE_ADD                                     19  ~9      ~9, !1
         30        ROPE_END                                     20  ~8      ~9, '%7Es'
         31        ASSIGN                                                   !2, ~8
    8    32        ASSIGN                                                   !3, '%7Bliteral%7D%3Cscript+type%3D%22javascript%22%3Ealert%28%27foo%27%29%3B%3C%2Fscript%3E%7B%2Fliteral%7D'
   10    33        INIT_FCALL                                               'preg_replace'
         34        CONCAT                                           ~22     !2, 'e'
         35        SEND_VAL                                                 ~22
   11    36        CONCAT                                           ~23     '%27', !0
         37        CONCAT                                           ~24     ~23, 'php'
   12    38        CONCAT                                           ~25     ~24, '%27+.+str_repeat%28%22%0A%22%2C+substr_count%28%27%5C0%27%2C+%22%0A%22%29%29+.%27'
   13    39        CONCAT                                           ~26     ~25, !1
   14    40        CONCAT                                           ~27     ~26, '%27'
         41        SEND_VAL                                                 ~27
   15    42        SEND_VAR                                                 !3
         43        DO_ICALL                                         $28     
   10    44        ASSIGN                                                   !3, $28
   16    45        ECHO                                                     !3
         46      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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