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<?php $key = 'devices.deviceId.*'; if ( preg_match('/^([\w._]{1,})?\.*{1}?$/i', $key) ) { echo 'ist OK.'; } else { echo 'Format ist nicht OK.'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FCiPC
function name:  (null)
number of ops:  10
compiled vars:  !0 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'devices.deviceId.%2A'
    4     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5E%28%5B%5Cw._%5D%7B1%2C%7D%29%3F%5C.%2A%7B1%7D%3F%24%2Fi'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->8
    5     6    >   ECHO                                                     'ist+OK.'
    4     7      > JMP                                                      ->9
    7     8    >   ECHO                                                     'Format+ist+nicht+OK.'
    8     9    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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