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<?php $doc = new DOMDocument; $doc->loadHTML('<html><body id="x"></body></html>'); $body = $doc->getElementById('x'); $div = $doc->createElement('div'); $div->setAttribute('id', 'y'); echo ( $doc->getElementById('y') ? $doc->getElementById('y')->tagName : 'null' ) . PHP_EOL;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 22, Position 2 = 28
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 29
Branch analysis from position: 29
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lS7XW
function name:  (null)
number of ops:  32
compiled vars:  !0 = $doc, !1 = $body, !2 = $div
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $3      'DOMDocument'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $3
    4     3        INIT_METHOD_CALL                                         !0, 'loadHTML'
          4        SEND_VAL_EX                                              '%3Chtml%3E%3Cbody+id%3D%22x%22%3E%3C%2Fbody%3E%3C%2Fhtml%3E'
          5        DO_FCALL                                      0          
    5     6        INIT_METHOD_CALL                                         !0, 'getElementById'
          7        SEND_VAL_EX                                              'x'
          8        DO_FCALL                                      0  $7      
          9        ASSIGN                                                   !1, $7
    6    10        INIT_METHOD_CALL                                         !0, 'createElement'
         11        SEND_VAL_EX                                              'div'
         12        DO_FCALL                                      0  $9      
         13        ASSIGN                                                   !2, $9
    7    14        INIT_METHOD_CALL                                         !2, 'setAttribute'
         15        SEND_VAL_EX                                              'id'
         16        SEND_VAL_EX                                              'y'
         17        DO_FCALL                                      0          
    8    18        INIT_METHOD_CALL                                         !0, 'getElementById'
         19        SEND_VAL_EX                                              'y'
         20        DO_FCALL                                      0  $12     
         21      > JMPZ                                                     $12, ->28
         22    >   INIT_METHOD_CALL                                         !0, 'getElementById'
         23        SEND_VAL_EX                                              'y'
         24        DO_FCALL                                      0  $13     
         25        FETCH_OBJ_R                                      ~14     $13, 'tagName'
         26        QM_ASSIGN                                        ~15     ~14
         27      > JMP                                                      ->29
         28    >   QM_ASSIGN                                        ~15     'null'
         29    >   CONCAT                                           ~16     ~15, '%0A'
         30        ECHO                                                     ~16
    9    31      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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