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<?php $x = 'stdClass'; var_export($x instanceof $x instanceof $x);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/QWYZJ
function name:  (null)
number of ops:  9
compiled vars:  !0 = $x
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, 'stdClass'
    4     1        INIT_FCALL                                                   'var_export'
          2        FETCH_CLASS                                       0  $2      !0
          3        INSTANCEOF                                           ~3      !0, $2
          4        FETCH_CLASS                                       0  $4      !0
          5        INSTANCEOF                                           ~5      ~3, $4
          6        SEND_VAL                                                     ~5
          7        DO_ICALL                                                     
          8      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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