3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Demo { public static $foo = 42; protected static $boo = 43; public static function getProtected($name) { return self::$$name; } } $var1 = 'foo'; $var2 = 'boo'; $class = 'Demo'; $func = 'getProtected'; var_dump(Demo::$$var1); var_dump($class::$foo); var_dump($class::$$var1); //var_dump(Demo::$$var2); // Fatal error: Cannot access protected property Demo::$boo var_dump(Demo::getProtected($var2)); var_dump($class::getProtected($var2)); var_dump($class::$func($var2));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/alOaI
function name:  (null)
number of ops:  39
compiled vars:  !0 = $var1, !1 = $var2, !2 = $class, !3 = $func
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   ASSIGN                                                   !0, 'foo'
   13     1        ASSIGN                                                   !1, 'boo'
   14     2        ASSIGN                                                   !2, 'Demo'
   15     3        ASSIGN                                                   !3, 'getProtected'
   16     4        INIT_FCALL                                               'var_dump'
          5        FETCH_STATIC_PROP_R          global lock         ~8      !0
          6        SEND_VAL                                                 ~8
          7        DO_ICALL                                                 
   17     8        INIT_FCALL                                               'var_dump'
          9        FETCH_CLASS                                   0  $10     !2
         10        FETCH_STATIC_PROP_R          unknown             ~11     'foo'
         11        SEND_VAL                                                 ~11
         12        DO_ICALL                                                 
   18    13        INIT_FCALL                                               'var_dump'
         14        FETCH_CLASS                                   0  $13     !2
         15        FETCH_STATIC_PROP_R          unknown             ~14     !0
         16        SEND_VAL                                                 ~14
         17        DO_ICALL                                                 
   20    18        INIT_FCALL                                               'var_dump'
         19        INIT_STATIC_METHOD_CALL                                  'Demo', 'getProtected'
         20        SEND_VAR                                                 !1
         21        DO_FCALL                                      0  $16     
         22        SEND_VAR                                                 $16
         23        DO_ICALL                                                 
   21    24        INIT_FCALL                                               'var_dump'
         25        FETCH_CLASS                                   0  $18     !2
         26        INIT_STATIC_METHOD_CALL                                  $18, 'getProtected'
         27        SEND_VAR_EX                                              !1
         28        DO_FCALL                                      0  $19     
         29        SEND_VAR                                                 $19
         30        DO_ICALL                                                 
   22    31        INIT_FCALL                                               'var_dump'
         32        FETCH_CLASS                                   0  $21     !2
         33        INIT_STATIC_METHOD_CALL                                  $21, !3
         34        SEND_VAR_EX                                              !1
         35        DO_FCALL                                      0  $22     
         36        SEND_VAR                                                 $22
         37        DO_ICALL                                                 
         38      > RETURN                                                   1

Class Demo:
Function getprotected:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/alOaI
function name:  getProtected
number of ops:  4
compiled vars:  !0 = $name
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   RECV                                             !0      
    8     1        FETCH_STATIC_PROP_R          unknown             ~1      !0
          2      > RETURN                                                   ~1
    9     3*     > RETURN                                                   null

End of function getprotected

End of class Demo.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
167.08 ms | 1400 KiB | 15 Q