3v4l.org

run code in 300+ PHP versions simultaneously
<?php session_start(); $bar = &$_SESSION['foo']; var_dump($_SESSION['foo']); $test=new test(); $foo = 1; ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MoYG0
function name:  (null)
number of ops:  15
compiled vars:  !0 = $bar, !1 = $test, !2 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'session_start'
          1        DO_ICALL                                                 
    3     2        FETCH_W                      global              $4      '_SESSION'
          3        FETCH_DIM_W                                      $5      $4, 'foo'
          4        ASSIGN_REF                                               !0, $5
    5     5        INIT_FCALL                                               'var_dump'
          6        FETCH_R                      global              ~7      '_SESSION'
          7        FETCH_DIM_R                                      ~8      ~7, 'foo'
          8        SEND_VAL                                                 ~8
          9        DO_ICALL                                                 
    7    10        NEW                                              $10     'test'
         11        DO_FCALL                                      0          
         12        ASSIGN                                                   !1, $10
    9    13        ASSIGN                                                   !2, 1
   11    14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
178.39 ms | 1394 KiB | 17 Q