3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = array( 'DOCUMENT_ROOT' => 'this', 'bob' => 'that' ); echo "Before: $foo[DOCUMENT_ROOT]\n"; define('DOCUMENT_ROOT', 'bob'); echo "After: {$foo[DOCUMENT_ROOT]}\n"; echo "Expected: ", $foo[DOCUMENT_ROOT];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Aeeda
function name:  (null)
number of ops:  21
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    7     1        ROPE_INIT                                     3  ~4      'Before%3A+'
          2        FETCH_DIM_R                                      ~2      !0, 'DOCUMENT_ROOT'
          3        ROPE_ADD                                      1  ~4      ~4, ~2
          4        ROPE_END                                      2  ~3      ~4, '%0A'
          5        ECHO                                                     ~3
    8     6        INIT_FCALL                                               'define'
          7        SEND_VAL                                                 'DOCUMENT_ROOT'
          8        SEND_VAL                                                 'bob'
          9        DO_ICALL                                                 
    9    10        ROPE_INIT                                     3  ~10     'After%3A+'
         11        FETCH_CONSTANT                                   ~7      'DOCUMENT_ROOT'
         12        FETCH_DIM_R                                      ~8      !0, ~7
         13        ROPE_ADD                                      1  ~10     ~10, ~8
         14        ROPE_END                                      2  ~9      ~10, '%0A'
         15        ECHO                                                     ~9
   10    16        ECHO                                                     'Expected%3A+'
         17        FETCH_CONSTANT                                   ~12     'DOCUMENT_ROOT'
         18        FETCH_DIM_R                                      ~13     !0, ~12
         19        ECHO                                                     ~13
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
150.8 ms | 1395 KiB | 15 Q