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<?php $matches = array(); preg_match(".+@(?:(?:(?!.*[^.]{64,})(?:(?:(?:xn--)?[a-z0-9]+(?:-+[a-z0-9]+)*\\.){1,126}){1,}(?:(?:[a-z][a-z0-9]*)|(?:(?:xn--)[a-z0-9]+))(?:-+[a-z0-9]+)*)|(?:\\[(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){7})|(?:(?!(?:.*[a-f0-9][:\\]]){7,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,5})?)))|(?:(?:IPv6:(?:(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){5}:)|(?:(?!(?:.*[a-f0-9]:){5,})(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3})?::(?:[a-f0-9]{1,4}(?::[a-f0-9]{1,4}){0,3}:)?)))?(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))(?:\\.(?:(?:25[0-5])|(?:2[0-4][0-9])|(?:1[0-9]{2})|(?:[1-9]?[0-9]))){3}))\\]))$", 'look@domain.com', $matches); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/3MBnd
function name:  (null)
number of ops:  10
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '.%2B%40%28%3F%3A%28%3F%3A%28%3F%21.%2A%5B%5E.%5D%7B64%2C%7D%29%28%3F%3A%28%3F%3A%28%3F%3Axn--%29%3F%5Ba-z0-9%5D%2B%28%3F%3A-%2B%5Ba-z0-9%5D%2B%29%2A%5C.%29%7B1%2C126%7D%29%7B1%2C%7D%28%3F%3A%28%3F%3A%5Ba-z%5D%5Ba-z0-9%5D%2A%29%7C%28%3F%3A%28%3F%3Axn--%29%5Ba-z0-9%5D%2B%29%29%28%3F%3A-%2B%5Ba-z0-9%5D%2B%29%2A%29%7C%28%3F%3A%5C%5B%28%3F%3A%28%3F%3AIPv6%3A%28%3F%3A%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B7%7D%29%7C%28%3F%3A%28%3F%21%28%3F%3A.%2A%5Ba-f0-9%5D%5B%3A%5C%5D%5D%29%7B7%2C%7D%29%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B0%2C5%7D%29%3F%3A%3A%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B0%2C5%7D%29%3F%29%29%29%7C%28%3F%3A%28%3F%3AIPv6%3A%28%3F%3A%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B5%7D%3A%29%7C%28%3F%3A%28%3F%21%28%3F%3A.%2A%5Ba-f0-9%5D%3A%29%7B5%2C%7D%29%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B0%2C3%7D%29%3F%3A%3A%28%3F%3A%5Ba-f0-9%5D%7B1%2C4%7D%28%3F%3A%3A%5Ba-f0-9%5D%7B1%2C4%7D%29%7B0%2C3%7D%3A%29%3F%29%29%29%3F%28%3F%3A%28%3F%3A25%5B0-5%5D%29%7C%28%3F%3A2%5B0-4%5D%5B0-9%5D%29%7C%28%3F%3A1%5B0-9%5D%7B2%7D%29%7C%28%3F%3A%5B1-9%5D%3F%5B0-9%5D%29%29%28%3F%3A%5C.%28%3F%3A%28%3F%3A25%5B0-5%5D%29%7C%28%3F%3A2%5B0-4%5D%5B0-9%5D%29%7C%28%3F%3A1%5B0-9%5D%7B2%7D%29%7C%28%3F%3A%5B1-9%5D%3F%5B0-9%5D%29%29%29%7B3%7D%29%29%5C%5D%29%29%24'
    4     3        SEND_VAL                                                 'look%40domain.com'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                                 
    6     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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