3v4l.org

run code in 300+ PHP versions simultaneously
<?php $html = <<<'HTML' <article> <p rel="#" src="#">aaaaaa</p> <p href="#" bla="#" bla2="#">bbbbbb</p> </article> HTML; $dom = new DOMDocument; @$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xpath = new DomXPath($dom); $elements = $xpath->query('//article/*'); $allowedAttributes = ['src', 'href']; foreach($elements as $element) { for( $i = $element->attributes->length; --$i >= 0; ) { if( ! in_array( $element->attributes->item($i)->name, $allowedAttributes ) ) { $element->removeAttribute($element->attributes->item($i)->name); } } } echo $dom->saveHTML();
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 20, Position 2 = 49
Branch analysis from position: 20
2 jumps found. (Code = 78) Position 1 = 21, Position 2 = 49
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 45
Branch analysis from position: 45
2 jumps found. (Code = 44) Position 1 = 48, Position 2 = 25
Branch analysis from position: 48
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
Branch analysis from position: 25
2 jumps found. (Code = 43) Position 1 = 36, Position 2 = 45
Branch analysis from position: 36
2 jumps found. (Code = 44) Position 1 = 48, Position 2 = 25
Branch analysis from position: 48
Branch analysis from position: 25
Branch analysis from position: 45
Branch analysis from position: 49
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 49
filename:       /in/UPrsr
function name:  (null)
number of ops:  54
compiled vars:  !0 = $html, !1 = $dom, !2 = $xpath, !3 = $elements, !4 = $allowedAttributes, !5 = $element, !6 = $i
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%3Carticle%3E%0A%09%3Cp+rel%3D%22%23%22+src%3D%22%23%22%3Eaaaaaa%3C%2Fp%3E%0A%09%3Cp+href%3D%22%23%22+bla%3D%22%23%22+bla2%3D%22%23%22%3Ebbbbbb%3C%2Fp%3E%0A%3C%2Farticle%3E'
   10     1        NEW                                              $8      'DOMDocument'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !1, $8
   11     4        BEGIN_SILENCE                                    ~11     
          5        INIT_METHOD_CALL                                         !1, 'loadHTML'
          6        SEND_VAR_EX                                              !0
          7        SEND_VAL_EX                                              8196
          8        DO_FCALL                                      0          
          9        END_SILENCE                                              ~11
   12    10        NEW                                              $13     'DomXPath'
         11        SEND_VAR_EX                                              !1
         12        DO_FCALL                                      0          
         13        ASSIGN                                                   !2, $13
   13    14        INIT_METHOD_CALL                                         !2, 'query'
         15        SEND_VAL_EX                                              '%2F%2Farticle%2F%2A'
         16        DO_FCALL                                      0  $16     
         17        ASSIGN                                                   !3, $16
   15    18        ASSIGN                                                   !4, <array>
   16    19      > FE_RESET_R                                       $19     !3, ->49
         20    > > FE_FETCH_R                                               $19, !5, ->49
   17    21    >   FETCH_OBJ_R                                      ~20     !5, 'attributes'
         22        FETCH_OBJ_R                                      ~21     ~20, 'length'
         23        ASSIGN                                                   !6, ~21
         24      > JMP                                                      ->45
   18    25    >   INIT_FCALL                                               'in_array'
         26        FETCH_OBJ_R                                      ~23     !5, 'attributes'
         27        INIT_METHOD_CALL                                         ~23, 'item'
         28        SEND_VAR_EX                                              !6
         29        DO_FCALL                                      0  $24     
         30        FETCH_OBJ_R                                      ~25     $24, 'name'
         31        SEND_VAL                                                 ~25
         32        SEND_VAR                                                 !4
         33        DO_ICALL                                         $26     
         34        BOOL_NOT                                         ~27     $26
         35      > JMPZ                                                     ~27, ->45
   19    36    >   INIT_METHOD_CALL                                         !5, 'removeAttribute'
         37        CHECK_FUNC_ARG                                           
         38        FETCH_OBJ_R                                      ~28     !5, 'attributes'
         39        INIT_METHOD_CALL                                         ~28, 'item'
         40        SEND_VAR_EX                                              !6
         41        DO_FCALL                                      0  $29     
         42        FETCH_OBJ_FUNC_ARG                               $30     $29, 'name'
         43        SEND_FUNC_ARG                                            $30
         44        DO_FCALL                                      0          
   17    45    >   PRE_DEC                                          ~32     !6
         46        IS_SMALLER_OR_EQUAL                                      0, ~32
         47      > JMPNZ                                                    ~33, ->25
   16    48    > > JMP                                                      ->20
         49    >   FE_FREE                                                  $19
   23    50        INIT_METHOD_CALL                                         !1, 'saveHTML'
         51        DO_FCALL                                      0  $34     
         52        ECHO                                                     $34
         53      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
250.37 ms | 1005 KiB | 14 Q