3v4l.org

run code in 300+ PHP versions simultaneously
<?php $stack = [ [ 'prefix' => [], 'array' => '$haystack' ] ]; $x = &$stack; $stack = []; print_r($x);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/tvXKj
function name:  (null)
number of ops:  7
compiled vars:  !0 = $stack, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        ASSIGN_REF                                               !1, !0
   11     2        ASSIGN                                                   !0, <array>
   12     3        INIT_FCALL                                               'print_r'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                                 
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
143.74 ms | 1393 KiB | 15 Q