3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php define('ABC','dre'); define(ABC, 5); var_dump(get_defined_constants(),1); echo dre;
Finding entry points
Branch analysis from position: 0
Jump found. (Code = 62) Position 1 = -2
filename:       /in/Nfmnk
function name:  (null)
number of ops:  18
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL                                               'define'
         1        SEND_VAL                                                 'ABC'
         2        SEND_VAL                                                 'dre'
         3        DO_ICALL                                                 
   5     4        INIT_FCALL                                               'define'
         5        FETCH_CONSTANT                                   ~1      'ABC'
         6        SEND_VAL                                                 ~1
         7        SEND_VAL                                                 5
         8        DO_ICALL                                                 
   8     9        INIT_FCALL                                               'var_dump'
        10        INIT_FCALL                                               'get_defined_constants'
        11        DO_ICALL                                         $3      
        12        SEND_VAR                                                 $3
        13        SEND_VAL                                                 1
        14        DO_ICALL                                                 
  10    15        FETCH_CONSTANT                                   ~5      'dre'
        16        ECHO                                                     ~5
        17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0