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<?php $txt = "Testando se essa pescaria é valida @ju1lio.leao, se não for aciona @alycianne. Importante deixar @mirian ciente. E a @simone.akemi de sobreaviso."; $pattern = "/@(?:[a-z0-9-]+\.)*[a-z0-9]+/"; preg_match_all($pattern, $txt, $matches); print_r($matches[0]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IS4IS
function name:  (null)
number of ops:  12
compiled vars:  !0 = $txt, !1 = $pattern, !2 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'Testando+se+essa+pescaria+%C3%A9+valida+%40ju1lio.leao%2C+se+n%C3%A3o+for+aciona+%40alycianne.%0AImportante+deixar+%40mirian+ciente.+E+a+%40simone.akemi+de+sobreaviso.'
    5     1        ASSIGN                                                   !1, '%2F%40%28%3F%3A%5Ba-z0-9-%5D%2B%5C.%29%2A%5Ba-z0-9%5D%2B%2F'
    6     2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAR                                                 !1
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
    7     7        INIT_FCALL                                               'print_r'
          8        FETCH_DIM_R                                      ~6      !2, 0
          9        SEND_VAL                                                 ~6
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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