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<?php $xml=simplexml_load_string(<<<XML <people> <person> </person> <person id="17"> <name>John</name> </person> <person> </person> </people> XML ); $xml->xpath('//person[@id=17]')[1]->name="Bill"; echo $xml->asXML();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/nKsqW
function name:  (null)
number of ops:  15
compiled vars:  !0 = $xml
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'simplexml_load_string'
    3     1        SEND_VAL                                                 '%3Cpeople%3E%0A++++%3Cperson%3E%0A++++%3C%2Fperson%3E%0A++++%3Cperson+id%3D%2217%22%3E%0A++++++++%3Cname%3EJohn%3C%2Fname%3E%0A++++%3C%2Fperson%3E%0A++++%3Cperson%3E%0A++++%3C%2Fperson%3E%0A%3C%2Fpeople%3E'
          2        DO_ICALL                                         $1      
    2     3        ASSIGN                                                   !0, $1
   14     4        INIT_METHOD_CALL                                         !0, 'xpath'
          5        SEND_VAL_EX                                              '%2F%2Fperson%5B%40id%3D17%5D'
          6        DO_FCALL                                      0  $3      
          7        SEPARATE                                         $3      $3
          8        FETCH_DIM_W                                      $4      $3, 1
          9        ASSIGN_OBJ                                               $4, 'name'
         10        OP_DATA                                                  'Bill'
   16    11        INIT_METHOD_CALL                                         !0, 'asXML'
         12        DO_FCALL                                      0  $6      
         13        ECHO                                                     $6
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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