3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1,2,3); $b = &$a; foreach($a as $v) { echo "$v\n"; unset($a[1]); } var_dump($a, $b);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 9
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 9
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/2oe8n
function name:  (null)
number of ops:  15
compiled vars:  !0 = $a, !1 = $b, !2 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN_REF                                               !1, !0
    5     2      > FE_RESET_R                                       $5      !0, ->9
          3    > > FE_FETCH_R                                               $5, !2, ->9
    6     4    >   NOP                                                      
          5        FAST_CONCAT                                      ~6      !2, '%0A'
          6        ECHO                                                     ~6
    7     7        UNSET_DIM                                                !0, 1
    5     8      > JMP                                                      ->3
          9    >   FE_FREE                                                  $5
   10    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !0
         12        SEND_VAR                                                 !1
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.47 ms | 1394 KiB | 15 Q