3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 0; $bar = 'foo'; echo $$bar;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/T35tJ
function name:  (null)
number of ops:  5
compiled vars:  !0 = $foo, !1 = $bar
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 0
    3     1        ASSIGN                                                   !1, 'foo'
    4     2        FETCH_R                      local               ~4      !1
          3        ECHO                                                     ~4
          4      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
151.54 ms | 1392 KiB | 13 Q