3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { public $a = " test a! "; static public $b = " test b! "; } $a = new a(); $b = "a"; echo $line++, $$b; echo $line++, $$b->a; echo $line++, $$b->b; // echo $line++, $$b::b; // ERROR
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oXbqe
function name:  (null)
number of ops:  19
compiled vars:  !0 = $a, !1 = $b, !2 = $line
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   NEW                                              $3      'a'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $3
   11     3        ASSIGN                                                   !1, 'a'
   14     4        POST_INC                                         ~7      !2
          5        ECHO                                                     ~7
          6        FETCH_R                      local               ~8      !1
          7        ECHO                                                     ~8
   15     8        POST_INC                                         ~9      !2
          9        ECHO                                                     ~9
         10        FETCH_R                      local               ~10     !1
         11        FETCH_OBJ_R                                      ~11     ~10, 'a'
         12        ECHO                                                     ~11
   16    13        POST_INC                                         ~12     !2
         14        ECHO                                                     ~12
         15        FETCH_R                      local               ~13     !1
         16        FETCH_OBJ_R                                      ~14     ~13, 'b'
         17        ECHO                                                     ~14
   17    18      > RETURN                                                   1

Class a: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.77 ms | 1393 KiB | 13 Q