3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = NULL; var_dumo(isset($a));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ie3NQ
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    4     1        INIT_FCALL_BY_NAME                                       'var_dumo'
          2        ISSET_ISEMPTY_CV                                 ~2      !0
          3        SEND_VAL_EX                                              ~2
          4        DO_FCALL                                      0          
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
177.85 ms | 1392 KiB | 13 Q