3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = simplexml_load_string('<a foo="bar" />'); $foo = $x['foo']; $foo[0] = ''; echo $x->asXML();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/23ktO
function name:  (null)
number of ops:  12
compiled vars:  !0 = $x, !1 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'simplexml_load_string'
          1        SEND_VAL                                                 '%3Ca+foo%3D%22bar%22+%2F%3E'
          2        DO_ICALL                                         $2      
          3        ASSIGN                                                   !0, $2
    4     4        FETCH_DIM_R                                      ~4      !0, 'foo'
          5        ASSIGN                                                   !1, ~4
    5     6        ASSIGN_DIM                                               !1, 0
          7        OP_DATA                                                  ''
    8     8        INIT_METHOD_CALL                                         !0, 'asXML'
          9        DO_FCALL                                      0  $7      
         10        ECHO                                                     $7
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.67 ms | 1394 KiB | 15 Q