3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = null; $y = new Exception(''); var_dump($y instanceof $x);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/eo65C
function name:  (null)
number of ops:  11
compiled vars:  !0 = $x, !1 = $y
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    4     1        NEW                                              $3      'Exception'
          2        SEND_VAL_EX                                              ''
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $3
    5     5        INIT_FCALL                                               'var_dump'
          6        FETCH_CLASS                                   0  $6      !0
          7        INSTANCEOF                                       ~7      !1, $6
          8        SEND_VAL                                                 ~7
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
164.53 ms | 1394 KiB | 15 Q