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<?php $dom = new DOMDocument(); $dom->loadXml('<foo xmlns=urn:foo/>'); var_dump($dom->documentElement->lookupNamespaceURI(NULL));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/9965o
function name:  (null)
number of ops:  14
compiled vars:  !0 = $dom
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'DOMDocument'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        INIT_METHOD_CALL                                         !0, 'loadXml'
          4        SEND_VAL_EX                                              '%3Cfoo+xmlns%3Durn%3Afoo%2F%3E'
          5        DO_FCALL                                      0          
    6     6        INIT_FCALL                                               'var_dump'
          7        FETCH_OBJ_R                                      ~5      !0, 'documentElement'
          8        INIT_METHOD_CALL                                         ~5, 'lookupNamespaceURI'
          9        SEND_VAL_EX                                              null
         10        DO_FCALL                                      0  $6      
         11        SEND_VAR                                                 $6
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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