3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function foo() { $f = function() { $name = "this"; var_dump(${$name}->bar()); }; $f(); } public function bar() { return "bar"; }} $a = new A; $a->foo();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VPsqj
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   NEW                                              $1      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
          3        INIT_METHOD_CALL                                         !0, 'foo'
          4        DO_FCALL                                      0          
          5      > RETURN                                                   1

Function %00%7Bclosure%7D%2Fin%2FVPsqj%3A2%240:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VPsqj
function name:  {closure}
number of ops:  8
compiled vars:  !0 = $name
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E >   ASSIGN                                                   !0, 'this'
          1        INIT_FCALL                                               'var_dump'
          2        FETCH_R                      local               ~2      !0
          3        INIT_METHOD_CALL                                         ~2, 'bar'
          4        DO_FCALL                                      0  $3      
          5        SEND_VAR                                                 $3
          6        DO_ICALL                                                 
          7      > RETURN                                                   null

End of function %00%7Bclosure%7D%2Fin%2FVPsqj%3A2%240

Class A:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VPsqj
function name:  foo
number of ops:  5
compiled vars:  !0 = $f
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E >   DECLARE_LAMBDA_FUNCTION                                  '%00%7Bclosure%7D%2Fin%2FVPsqj%3A2%240'
          1        ASSIGN                                                   !0, ~1
          2        INIT_DYNAMIC_CALL                                        !0
          3        DO_FCALL                                      0          
          4      > RETURN                                                   null

End of function foo

Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/VPsqj
function name:  bar
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
          0  E > > RETURN                                                   'bar'
          1*     > RETURN                                                   null

End of function bar

End of class A.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
148.49 ms | 1388 KiB | 15 Q