3v4l.org

run code in 300+ PHP versions simultaneously
<?php $session = array(); if (isset($session['one']['two'])) { echo 'match'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/pHo4D
function name:  (null)
number of ops:  6
compiled vars:  !0 = $session
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        FETCH_DIM_IS                                     ~2      !0, 'one'
          2        ISSET_ISEMPTY_DIM_OBJ                         0          ~2, 'two'
          3      > JMPZ                                                     ~3, ->5
    4     4    >   ECHO                                                     'match'
    5     5    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
142.04 ms | 1392 KiB | 13 Q