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<?php if (preg_match('#^(GIR ?0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]([0-9ABEHMNPRV-Y])?)|[0-9][A-HJKPS-UW]) ?[0-9][ABD-HJLNP-UW-Z]{2})$#i', "OL10 4RN")) { echo "true"; } else { echo "false"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 7
Branch analysis from position: 5
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/f4iFn
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%23%5E%28GIR+%3F0AA%7C%5BA-PR-UWYZ%5D%28%5B0-9%5D%7B1%2C2%7D%7C%28%5BA-HK-Y%5D%5B0-9%5D%28%5B0-9ABEHMNPRV-Y%5D%29%3F%29%7C%5B0-9%5D%5BA-HJKPS-UW%5D%29+%3F%5B0-9%5D%5BABD-HJLNP-UW-Z%5D%7B2%7D%29%24%23i'
          2        SEND_VAL                                                 'OL10+4RN'
          3        DO_ICALL                                         $0      
          4      > JMPZ                                                     $0, ->7
    4     5    >   ECHO                                                     'true'
          6      > JMP                                                      ->8
    6     7    >   ECHO                                                     'false'
    7     8    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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