3v4l.org

run code in 300+ PHP versions simultaneously
<?php define("CONSTANT", "Hello world."); echo CONSTANT; // outputs "Hello world." echo Constant; // outputs "Constant" and issues a notice. echo PHP_EOL; define("GREETING", "Hello you.", true); echo GREETING; // outputs "Hello you." echo Greeting; // outputs "Hello you." echo PHP_EOL; // Works as of PHP 7 define('ANIMALS', array( 'dog', 'cat', 'bird' )); echo PHP_EOL; echo ANIMALS[1]; // outputs "cat"
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/HOINP
function name:  (null)
number of ops:  28
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'define'
          1        SEND_VAL                                                 'CONSTANT'
          2        SEND_VAL                                                 'Hello+world.'
          3        DO_ICALL                                                 
    3     4        FETCH_CONSTANT                                   ~1      'CONSTANT'
          5        ECHO                                                     ~1
    4     6        FETCH_CONSTANT                                   ~2      'Constant'
          7        ECHO                                                     ~2
    5     8        ECHO                                                     '%0A'
    7     9        INIT_FCALL                                               'define'
         10        SEND_VAL                                                 'GREETING'
         11        SEND_VAL                                                 'Hello+you.'
         12        SEND_VAL                                                 <true>
         13        DO_ICALL                                                 
    8    14        FETCH_CONSTANT                                   ~4      'GREETING'
         15        ECHO                                                     ~4
    9    16        FETCH_CONSTANT                                   ~5      'Greeting'
         17        ECHO                                                     ~5
   10    18        ECHO                                                     '%0A'
   13    19        INIT_FCALL                                               'define'
         20        SEND_VAL                                                 'ANIMALS'
   14    21        SEND_VAL                                                 <array>
         22        DO_ICALL                                                 
   18    23        ECHO                                                     '%0A'
   19    24        FETCH_CONSTANT                                   ~7      'ANIMALS'
         25        FETCH_DIM_R                                      ~8      ~7, 1
         26        ECHO                                                     ~8
         27      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
164.18 ms | 1400 KiB | 15 Q