3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('a' => array(1, 2, 3, 4, 5), 'b' => array(6,7,8,9,10)); $ref = &$array; foreach ($array['a'] as $val) { var_dump($val); $array['a'][2] = 0; } var_dump($ref); var_dump($array);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 4, Position 2 = 12
Branch analysis from position: 4
2 jumps found. (Code = 78) Position 1 = 5, Position 2 = 12
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/Trst1
function name:  (null)
number of ops:  20
compiled vars:  !0 = $array, !1 = $ref, !2 = $val
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN_REF                                               !1, !0
    5     2        FETCH_DIM_R                                      ~5      !0, 'a'
          3      > FE_RESET_R                                       $6      ~5, ->12
          4    > > FE_FETCH_R                                               $6, !2, ->12
    6     5    >   INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !2
          7        DO_ICALL                                                 
    7     8        FETCH_DIM_W                                      $8      !0, 'a'
          9        ASSIGN_DIM                                               $8, 2
         10        OP_DATA                                                  0
    5    11      > JMP                                                      ->4
         12    >   FE_FREE                                                  $6
    9    13        INIT_FCALL                                               'var_dump'
         14        SEND_VAR                                                 !1
         15        DO_ICALL                                                 
   10    16        INIT_FCALL                                               'var_dump'
         17        SEND_VAR                                                 !0
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
178.99 ms | 1395 KiB | 15 Q