3v4l.org

run code in 500+ PHP versions simultaneously
<?php preg_match('/^[\w\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches); preg_match('/^[\w-\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches); preg_match('/^[\\w-\\.]+$/', 'admin.general.canViewPrivateUserOptions', $matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/66NDo
function name:  (null)
number of ops:  25
compiled vars:  !0 = $matches
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'preg_match'
          1        SEND_VAL                                                     '%2F%5E%5B%5Cw%5C.%5D%2B%24%2F'
          2        SEND_VAL                                                     'admin.general.canViewPrivateUserOptions'
          3        SEND_REF                                                     !0
          4        DO_ICALL                                                     
    4     5        INIT_FCALL                                                   'var_dump'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                                     
    6     8        INIT_FCALL                                                   'preg_match'
          9        SEND_VAL                                                     '%2F%5E%5B%5Cw-%5C.%5D%2B%24%2F'
         10        SEND_VAL                                                     'admin.general.canViewPrivateUserOptions'
         11        SEND_REF                                                     !0
         12        DO_ICALL                                                     
    7    13        INIT_FCALL                                                   'var_dump'
         14        SEND_VAR                                                     !0
         15        DO_ICALL                                                     
    9    16        INIT_FCALL                                                   'preg_match'
         17        SEND_VAL                                                     '%2F%5E%5B%5Cw-%5C.%5D%2B%24%2F'
         18        SEND_VAL                                                     'admin.general.canViewPrivateUserOptions'
         19        SEND_REF                                                     !0
         20        DO_ICALL                                                     
   10    21        INIT_FCALL                                                   'var_dump'
         22        SEND_VAR                                                     !0
         23        DO_ICALL                                                     
         24      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


preferences:
170.66 ms | 2650 KiB | 15 Q