3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace foo; define('TRUE', false); define('true', false); define('FALSE', true); define('false', true); var_dump(TRUE); # false var_dump(true); # false var_dump(false); # false var_dump(FALSE); # false
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/fXRFf
function name:  (null)
number of ops:  29
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_NS_FCALL_BY_NAME                                    'foo%5Cdefine'
          1        SEND_VAL_EX                                              'TRUE'
          2        SEND_VAL_EX                                              <false>
          3        DO_FCALL                                      0          
    7     4        INIT_NS_FCALL_BY_NAME                                    'foo%5Cdefine'
          5        SEND_VAL_EX                                              'true'
          6        SEND_VAL_EX                                              <false>
          7        DO_FCALL                                      0          
    9     8        INIT_NS_FCALL_BY_NAME                                    'foo%5Cdefine'
          9        SEND_VAL_EX                                              'FALSE'
         10        SEND_VAL_EX                                              <true>
         11        DO_FCALL                                      0          
   11    12        INIT_NS_FCALL_BY_NAME                                    'foo%5Cdefine'
         13        SEND_VAL_EX                                              'false'
         14        SEND_VAL_EX                                              <true>
         15        DO_FCALL                                      0          
   14    16        INIT_NS_FCALL_BY_NAME                                    'foo%5Cvar_dump'
         17        SEND_VAL_EX                                              <true>
         18        DO_FCALL                                      0          
   15    19        INIT_NS_FCALL_BY_NAME                                    'foo%5Cvar_dump'
         20        SEND_VAL_EX                                              <true>
         21        DO_FCALL                                      0          
   16    22        INIT_NS_FCALL_BY_NAME                                    'foo%5Cvar_dump'
         23        SEND_VAL_EX                                              <false>
         24        DO_FCALL                                      0          
   17    25        INIT_NS_FCALL_BY_NAME                                    'foo%5Cvar_dump'
         26        SEND_VAL_EX                                              <false>
         27        DO_FCALL                                      0          
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.76 ms | 1395 KiB | 17 Q