3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [1,2,3]; $brr = &$arr; foreach ($brr as $val) { print($val); $val = 'x'; } var_dump($arr); var_dump($brr);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 7
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
filename:       /in/4QrkQ
function name:  (null)
number of ops:  15
compiled vars:  !0 = $arr, !1 = $brr, !2 = $val
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        ASSIGN_REF                                               !1, !0
    7     2      > FE_RESET_R                                       $5      !1, ->7
          3    > > FE_FETCH_R                                               $5, !2, ->7
    8     4    >   ECHO                                                     !2
    9     5        ASSIGN                                                   !2, 'x'
    7     6      > JMP                                                      ->3
          7    >   FE_FREE                                                  $5
   12     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
   13    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !1
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
154.24 ms | 1394 KiB | 15 Q