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<?php function &z(&$a) { return $a; } $a = [ 'a', 'b', 'c' ]; foreach(z($a) as &$x) { $x .= 'q'; } print_r($a);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
2 jumps found. (Code = 126) Position 1 = 7, Position 2 = 9
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/mNFkt
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   ASSIGN                                                   !0, <array>
   10     1        INIT_FCALL                                               'z'
          2        SEND_REF                                                 !0
          3        DO_FCALL                                      0  $3      
          4        SEPARATE                                         $3      $3
          5      > FE_RESET_RW                                      $4      $3, ->9
          6    > > FE_FETCH_RW                                              $4, !1, ->9
   11     7    >   ASSIGN_OP                                     8          !1, 'q'
   10     8      > JMP                                                      ->6
          9    >   FE_FREE                                                  $4
   13    10        INIT_FCALL                                               'print_r'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Function z:
Finding entry points
Branch analysis from position: 0
Return found
filename:       /in/mNFkt
function name:  z
number of ops:  3
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   RECV                                             !0      
    6     1      > RETURN_BY_REF                                            !0
    7     2*     > RETURN_BY_REF                                            null

End of function z

Generated using Vulcan Logic Dumper, using php 8.0.0


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