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<?php $agent = $_SERVER['USER_AGENT']; if ($agent=='' || preg_match('#(MEGAUPLOAD|Feedfetcher|YisouSpider|HTTrack|HTTPClient|SurveyBot|Anonymous|similarpages|webcollage|MJ12bot|WebCopier|Teleport|ISpider|Wget|Offline|WebSnake|Download|Ezooms|Exabot|Gigabot|DotBot|psbot)#',$agent)) echo 1; else echo 0;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 5, Position 2 = 10
Branch analysis from position: 5
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 13
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/dprBm
function name:  (null)
number of ops:  15
compiled vars:  !0 = $agent
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   FETCH_R                      global              ~1      '_SERVER'
          1        FETCH_DIM_R                                      ~2      ~1, 'USER_AGENT'
          2        ASSIGN                                                   !0, ~2
    4     3        IS_EQUAL                                         ~4      !0, ''
          4      > JMPNZ_EX                                         ~4      ~4, ->10
          5    >   INIT_FCALL                                               'preg_match'
          6        SEND_VAL                                                 '%23%28MEGAUPLOAD%7CFeedfetcher%7CYisouSpider%7CHTTrack%7CHTTPClient%7CSurveyBot%7CAnonymous%7Csimilarpages%7Cwebcollage%7CMJ12bot%7CWebCopier%7CTeleport%7CISpider%7CWget%7COffline%7CWebSnake%7CDownload%7CEzooms%7CExabot%7CGigabot%7CDotBot%7Cpsbot%29%23'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $5      
          9        BOOL                                             ~4      $5
         10    > > JMPZ                                                     ~4, ->13
    5    11    >   ECHO                                                     1
         12      > JMP                                                      ->14
    7    13    >   ECHO                                                     0
         14    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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