3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = new class { }; class_alias($a::class, 'foo'); if (true) { class bar extends foo { } }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 10, Position 2 = 11
Branch analysis from position: 10
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
filename:       /in/pDFTL
function name:  (null)
number of ops:  12
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_ANON_CLASS                               <unknown> 
          1        NEW                                              $2      $1
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $2
    5     4        INIT_FCALL                                               'class_alias'
          5        FETCH_CLASS_NAME                                 ~5      !0
          6        SEND_VAL                                                 ~5
          7        SEND_VAL                                                 'foo'
          8        DO_ICALL                                                 
    7     9      > JMPZ                                                     <true>, ->11
    8    10    >   DECLARE_CLASS                                            'bar', 'foo'
    9    11    > > RETURN                                                   1

Class class@anonymous: [no user functions]
Class bar: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
142.83 ms | 1394 KiB | 15 Q