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<?php function f(array $a) { foreach ($a as &$i) { foreach ($i as &$j) { $j++; } } } $v = [[1], [2]]; f($v); var_dump($v);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/10Z8n
function name:  (null)
number of ops:  8
compiled vars:  !0 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   11     0  E >   ASSIGN                                                   !0, <array>
   12     1        INIT_FCALL                                               'f'
          2        SEND_VAR                                                 !0
          3        DO_FCALL                                      0          
   13     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 2, Position 2 = 9
Branch analysis from position: 2
2 jumps found. (Code = 126) Position 1 = 3, Position 2 = 9
Branch analysis from position: 3
2 jumps found. (Code = 125) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
2 jumps found. (Code = 126) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 7
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/10Z8n
function name:  f
number of ops:  11
compiled vars:  !0 = $a, !1 = $i, !2 = $j
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
    4     1      > FE_RESET_RW                                      $3      !0, ->9
          2    > > FE_FETCH_RW                                              $3, !1, ->9
    5     3    > > FE_RESET_RW                                      $4      !1, ->7
          4    > > FE_FETCH_RW                                              $4, !2, ->7
    6     5    >   PRE_INC                                                  !2
    5     6      > JMP                                                      ->4
          7    >   FE_FREE                                                  $4
    4     8      > JMP                                                      ->2
          9    >   FE_FREE                                                  $3
    9    10      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0


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