3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function foo() { return (object)[]; }} $a = new A(); var_dump(isset($a->foo()->lol));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/n1mFK
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $1      'A'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
    4     3        INIT_FCALL                                               'var_dump'
          4        INIT_METHOD_CALL                                         !0, 'foo'
          5        DO_FCALL                                      0  $4      
          6        ISSET_ISEMPTY_PROP_OBJ                           ~5      $4, 'lol'
          7        SEND_VAL                                                 ~5
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Class A:
Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/n1mFK
function name:  foo
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   CAST                                          8  ~0      <array>
          1      > RETURN                                                   ~0
          2*     > RETURN                                                   null

End of function foo

End of class A.

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
148.5 ms | 1394 KiB | 15 Q