3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '$a'; echo $a; echo $$a; echo $$$a;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WhOjI
function name:  (null)
number of ops:  8
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%24a'
    4     1        ECHO                                                     !0
    5     2        FETCH_R                      local               ~2      !0
          3        ECHO                                                     ~2
    6     4        FETCH_R                      local               ~3      !0
          5        FETCH_R                      local               ~4      ~3
          6        ECHO                                                     ~4
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.92 ms | 1392 KiB | 13 Q