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<?php $data = <<<DATA <div class="classeby_class"> <div class="classos-nope"> <div class="row"> <div class="class-show"></div> </div> </div> </div> <div class="class-first-one"> <div class="container"> <div class="classes-show"> <div class="class"></div> <div class="classing"></div> </div> </div> </div> DATA; $doc = new DomDocument(); $doc->loadHTML($data); $xpath = new DOMXPath($doc); $xpath->registerNamespace("php", "http://php.net/xpath"); $xpath->registerPHPFunctions(); $classtoremove = $xpath->query("//div[1 = php:function('preg_match', '/\bclass\b/', string(@class))]"); foreach ($classtoremove as $a) { var_dump($a->getAttribute("class")); }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 22, Position 2 = 30
Branch analysis from position: 22
2 jumps found. (Code = 78) Position 1 = 23, Position 2 = 30
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 22
Branch analysis from position: 22
Branch analysis from position: 30
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 30
filename:       /in/SsA3o
function name:  (null)
number of ops:  32
compiled vars:  !0 = $data, !1 = $doc, !2 = $xpath, !3 = $classtoremove, !4 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%3Cdiv+class%3D%22classeby_class%22%3E%0A++%3Cdiv+class%3D%22classos-nope%22%3E%0A++++%3Cdiv+class%3D%22row%22%3E%0A++++++%3Cdiv+class%3D%22class-show%22%3E%3C%2Fdiv%3E+%0A++++%3C%2Fdiv%3E%0A+++%3C%2Fdiv%3E%0A%3C%2Fdiv%3E%0A%0A%3Cdiv+class%3D%22class-first-one%22%3E%0A++%3Cdiv+class%3D%22container%22%3E%0A++++%3Cdiv+class%3D%22classes-show%22%3E%0A++++++%3Cdiv+class%3D%22class%22%3E%3C%2Fdiv%3E%0A++++++%3Cdiv+class%3D%22classing%22%3E%3C%2Fdiv%3E+%0A++++%3C%2Fdiv%3E%0A+++%3C%2Fdiv%3E%0A%3C%2Fdiv%3E'
   23     1        NEW                                              $6      'DomDocument'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !1, $6
   24     4        INIT_METHOD_CALL                                         !1, 'loadHTML'
          5        SEND_VAR_EX                                              !0
          6        DO_FCALL                                      0          
   25     7        NEW                                              $10     'DOMXPath'
          8        SEND_VAR_EX                                              !1
          9        DO_FCALL                                      0          
         10        ASSIGN                                                   !2, $10
   26    11        INIT_METHOD_CALL                                         !2, 'registerNamespace'
         12        SEND_VAL_EX                                              'php'
         13        SEND_VAL_EX                                              'http%3A%2F%2Fphp.net%2Fxpath'
         14        DO_FCALL                                      0          
   27    15        INIT_METHOD_CALL                                         !2, 'registerPHPFunctions'
         16        DO_FCALL                                      0          
   28    17        INIT_METHOD_CALL                                         !2, 'query'
         18        SEND_VAL_EX                                              '%2F%2Fdiv%5B1+%3D+php%3Afunction%28%27preg_match%27%2C+%27%2F%5Cbclass%5Cb%2F%27%2C+string%28%40class%29%29%5D'
         19        DO_FCALL                                      0  $15     
         20        ASSIGN                                                   !3, $15
   29    21      > FE_RESET_R                                       $17     !3, ->30
         22    > > FE_FETCH_R                                               $17, !4, ->30
   30    23    >   INIT_FCALL                                               'var_dump'
         24        INIT_METHOD_CALL                                         !4, 'getAttribute'
         25        SEND_VAL_EX                                              'class'
         26        DO_FCALL                                      0  $18     
         27        SEND_VAR                                                 $18
         28        DO_ICALL                                                 
   29    29      > JMP                                                      ->22
         30    >   FE_FREE                                                  $17
   31    31      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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