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<?php trait A { protected static $_a; public static function setA($a) { static::$_a = $a; } public static function getA() { return static::$_a; } } class B { use A; public function __construct() { var_dump(static::$_a); } } A::setA('AAAA'); class C { use A; public function __construct() { var_dump(static::$_a); } } A::setA(null); class D { use A; public function __construct() { var_dump(static::$_a); } } new B; new C; new D;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  (null)
number of ops:  19
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   17     0  E >   DECLARE_CLASS                                            'b'
   27     1        INIT_STATIC_METHOD_CALL                                  'A', 'setA'
          2        SEND_VAL                                                 'AAAA'
          3        DO_FCALL                                      0          
   29     4        DECLARE_CLASS                                            'c'
   39     5        INIT_STATIC_METHOD_CALL                                  'A', 'setA'
          6        SEND_VAL                                                 null
          7        DO_FCALL                                      0          
   41     8        DECLARE_CLASS                                            'd'
   50     9        NEW                                              $2      'B'
         10        DO_FCALL                                      0          
         11        FREE                                                     $2
   51    12        NEW                                              $4      'C'
         13        DO_FCALL                                      0          
         14        FREE                                                     $4
   52    15        NEW                                              $6      'D'
         16        DO_FCALL                                      0          
         17        FREE                                                     $6
         18      > RETURN                                                   1

Class A:
Function seta:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  setA
number of ops:  4
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    8     1        ASSIGN_STATIC_PROP                                       '_a'
          2        OP_DATA                                                  !0
    9     3      > RETURN                                                   null

End of function seta

Function geta:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  getA
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   13     0  E >   FETCH_STATIC_PROP_R          unknown             ~0      '_a'
          1      > RETURN                                                   ~0
   14     2*     > RETURN                                                   null

End of function geta

End of class A.

Class B:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   23     0  E >   INIT_FCALL                                               'var_dump'
          1        FETCH_STATIC_PROP_R          global lock         ~0      '_a'
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
   24     4      > RETURN                                                   null

End of function __construct

End of class B.

Class C:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   35     0  E >   INIT_FCALL                                               'var_dump'
          1        FETCH_STATIC_PROP_R          global lock         ~0      '_a'
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
   36     4      > RETURN                                                   null

End of function __construct

End of class C.

Class D:
Function __construct:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5uN3n
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   46     0  E >   INIT_FCALL                                               'var_dump'
          1        FETCH_STATIC_PROP_R          global lock         ~0      '_a'
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
   47     4      > RETURN                                                   null

End of function __construct

End of class D.

Generated using Vulcan Logic Dumper, using php 8.0.0


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