3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=[];$a[6]=&$a; var_dump([$a,$a]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mTvKM
function name:  (null)
number of ops:  9
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
          1        FETCH_DIM_W                                      $2      !0, 6
          2        ASSIGN_REF                                               $2, !0
    4     3        INIT_FCALL                                               'var_dump'
          4        INIT_ARRAY                                       ~4      !0
          5        ADD_ARRAY_ELEMENT                                ~4      !0
          6        SEND_VAL                                                 ~4
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.74 ms | 1394 KiB | 15 Q