3v4l.org

run code in 300+ PHP versions simultaneously
<?php function returnnull() { return null; } $val = returnnull(); var_dump(isset($val));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mt2Y4
function name:  (null)
number of ops:  8
compiled vars:  !0 = $val
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'returnnull'
          1        DO_FCALL                                      0  $1      
          2        ASSIGN                                                   !0, $1
    8     3        INIT_FCALL                                               'var_dump'
          4        ISSET_ISEMPTY_CV                                 ~3      !0
          5        SEND_VAL                                                 ~3
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function returnnull:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mt2Y4
function name:  returnnull
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E > > RETURN                                                   null
    4     1*     > RETURN                                                   null

End of function returnnull

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
140.28 ms | 1401 KiB | 16 Q