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<?php //Limpiar comentarios en una cadena HTML con PHP // https://es.stackoverflow.com/q/114030/127 $cadenaHTML = "codigo <b>util</b> <!-- codigo basura --> mas codigo util <!-- mas codigo basura -->"; //Englobamos en body porque tu ejemplo no tiene //para corregirlo y que lo procese bien $html = '<body>' . $cadenaHTML . '</body>'; //Generar el DOM $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_COMPACT | LIBXML_HTML_NOIMPLIED | LIBXML_NONET | LIBXML_HTML_NODEFDTD); //Buscar cada comentario $xpath = new DOMXPath($dom); foreach ($xpath->query('//comment()') as $comment) { //eliminarlo $comment->parentNode->removeChild($comment); } //Guardar el html $resultado = $dom->saveHTML(); //Imprimir el resultado echo $resultado;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 19, Position 2 = 25
Branch analysis from position: 19
2 jumps found. (Code = 78) Position 1 = 20, Position 2 = 25
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 19
Branch analysis from position: 19
Branch analysis from position: 25
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 25
filename:       /in/m31Ue
function name:  (null)
number of ops:  31
compiled vars:  !0 = $cadenaHTML, !1 = $html, !2 = $dom, !3 = $xpath, !4 = $comment, !5 = $resultado
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ASSIGN                                                   !0, 'codigo+%3Cb%3Eutil%3C%2Fb%3E+%3C%21--+codigo+basura+--%3E+mas+codigo+util+%3C%21--+mas+codigo+basura+--%3E'
    9     1        CONCAT                                           ~7      '%3Cbody%3E', !0
          2        CONCAT                                           ~8      ~7, '%3C%2Fbody%3E'
          3        ASSIGN                                                   !1, ~8
   12     4        NEW                                              $10     'DOMDocument'
          5        DO_FCALL                                      0          
          6        ASSIGN                                                   !2, $10
   13     7        INIT_METHOD_CALL                                         !2, 'loadHTML'
          8        SEND_VAR_EX                                              !1
          9        SEND_VAL_EX                                              75780
         10        DO_FCALL                                      0          
   16    11        NEW                                              $14     'DOMXPath'
         12        SEND_VAR_EX                                              !2
         13        DO_FCALL                                      0          
         14        ASSIGN                                                   !3, $14
   17    15        INIT_METHOD_CALL                                         !3, 'query'
         16        SEND_VAL_EX                                              '%2F%2Fcomment%28%29'
         17        DO_FCALL                                      0  $17     
         18      > FE_RESET_R                                       $18     $17, ->25
         19    > > FE_FETCH_R                                               $18, !4, ->25
   19    20    >   FETCH_OBJ_R                                      ~19     !4, 'parentNode'
         21        INIT_METHOD_CALL                                         ~19, 'removeChild'
         22        SEND_VAR_EX                                              !4
         23        DO_FCALL                                      0          
   17    24      > JMP                                                      ->19
         25    >   FE_FREE                                                  $18
   23    26        INIT_METHOD_CALL                                         !2, 'saveHTML'
         27        DO_FCALL                                      0  $21     
         28        ASSIGN                                                   !5, $21
   26    29        ECHO                                                     !5
         30      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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