3v4l.org

run code in 500+ PHP versions simultaneously
<?php trait A { protected static $_a; public static function setA($a) { static::$_a = $a; } public static function getA() { return static::$_a; } } A::setA('AAAA'); class B { use A; public function __construct() { var_dump(static::$_a); } } A::setA('BBBB'); class C { use A; public function __construct() { var_dump(static::$_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/02nEs
function name:  (null)
number of ops:  22
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   17     0  E >   INIT_STATIC_METHOD_CALL                                      'A', 'setA'
          1        SEND_VAL                                                     'AAAA'
          2        DO_FCALL                                          0          
   19     3        DECLARE_CLASS                                                'b'
   29     4        INIT_STATIC_METHOD_CALL                                      'A', 'setA'
          5        SEND_VAL                                                     'BBBB'
          6        DO_FCALL                                          0          
   31     7        DECLARE_CLASS                                                'c'
   41     8        INIT_STATIC_METHOD_CALL                                      'A', 'setA'
          9        SEND_VAL                                                     null
         10        DO_FCALL                                          0          
   43    11        DECLARE_CLASS                                                'd'
   52    12        NEW                                                  $3      'B'
         13        DO_FCALL                                          0          
         14        FREE                                                         $3
   53    15        NEW                                                  $5      'C'
         16        DO_FCALL                                          0          
         17        FREE                                                         $5
   54    18        NEW                                                  $7      'D'
         19        DO_FCALL                                          0          
         20        FREE                                                         $7
         21      > RETURN                                                       1

Class A:
Function seta:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/02nEs
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/02nEs
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/02nEs
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   25     0  E >   INIT_FCALL                                                   'var_dump'
          1        FETCH_STATIC_PROP_R              global lock         ~0      '_a'
          2        SEND_VAL                                                     ~0
          3        DO_ICALL                                                     
   26     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/02nEs
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   37     0  E >   INIT_FCALL                                                   'var_dump'
          1        FETCH_STATIC_PROP_R              global lock         ~0      '_a'
          2        SEND_VAL                                                     ~0
          3        DO_ICALL                                                     
   38     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/02nEs
function name:  __construct
number of ops:  5
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   48     0  E >   INIT_FCALL                                                   'var_dump'
          1        FETCH_STATIC_PROP_R              global lock         ~0      '_a'
          2        SEND_VAL                                                     ~0
          3        DO_ICALL                                                     
   49     4      > RETURN                                                       null

End of function __construct

End of class D.

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
173.74 ms | 3041 KiB | 14 Q