3v4l.org

run code in 500+ PHP versions simultaneously
<?php $foo =[ [ 'a', 'b' ], [ 'c', 'd' ] ]; foreach ($foo as [ $x, &$y ]) { /* .... */ } $y = 'e'; var_dump($foo);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 2, Position 2 = 10
Branch analysis from position: 2
2 jumps found. (Code = 126) Position 1 = 3, Position 2 = 10
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 10
filename:       /in/A5Vi7
function name:  (null)
number of ops:  16
compiled vars:  !0 = $foo, !1 = $x, !2 = $y
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                       !0, <array>
    3     1      > FE_RESET_RW                                          $4      !0, ->10
          2    > > FE_FETCH_RW                                                  $4, $5, ->10
          3    >   FETCH_LIST_R                                         $6      $5, 0
          4        ASSIGN                                                       !1, $6
          5        FETCH_LIST_W                                         $8      $5, 1
          6        MAKE_REF                                             $9      $8
          7        ASSIGN_REF                                                   !2, $9
          8        FREE                                                         $5
          9      > JMP                                                          ->2
         10    >   FE_FREE                                                      $4
    4    11        ASSIGN                                                       !2, 'e'
    5    12        INIT_FCALL                                                   'var_dump'
         13        SEND_VAR                                                     !0
         14        DO_ICALL                                                     
         15      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
163.14 ms | 2031 KiB | 14 Q