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<?php declare(strict_types=1); function &declare_int(int $value) { static $references = []; $valueWrapper = new class(5) { public function __construct(public int $value) { } }; $references[] = $valueWrapper; return $valueWrapper->value; } $intVariable = &declare_int(0); $intVariable = 42; // works $intVariable = 'test'; // fails
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/T6GFS
function name:  (null)
number of ops:  7
compiled vars:  !0 = $intVariable
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   16     0  E >   INIT_FCALL                                                   'declare_int'
          1        SEND_VAL                                                     0
          2        DO_FCALL                                          0  $1      
          3        ASSIGN_REF                                                   !0, $1
   18     4        ASSIGN                                                       !0, 42
   19     5        ASSIGN                                                       !0, 'test'
          6      > RETURN                                                       1

Function declare_int:
Finding entry points
Branch analysis from position: 0
Return found
filename:       /in/T6GFS
function name:  declare_int
number of ops:  12
compiled vars:  !0 = $value, !1 = $references, !2 = $valueWrapper
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    4     0  E >   RECV                                                 !0      
    5     1        BIND_STATIC                                                  !1
    7     2        DECLARE_ANON_CLASS                                   <unknown> 
          3        NEW                                                  $4      $3
          4        SEND_VAL_EX                                                  5
          5        DO_FCALL                                          0          
          6        ASSIGN                                                       !2, $4
   11     7        ASSIGN_DIM                                                   !1
          8        OP_DATA                                                      !2
   13     9        FETCH_OBJ_W                                          $8      !2, 'value'
         10      > RETURN_BY_REF                                                $8
   14    11*     > RETURN_BY_REF                                                null

End of function declare_int

Class class@anonymous:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/T6GFS
function name:  __construct
number of ops:  4
compiled vars:  !0 = $value
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    8     0  E >   RECV                                                 !0      
          1        ASSIGN_OBJ                                                   'value'
          2        OP_DATA                                                      !0
    9     3      > RETURN                                                       null

End of function __construct

End of class class@anonymous.

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