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<?php var_dump(filter_var('atrücz@i.biz', FILTER_VALIDATE_EMAIL)); var_dump(filter_var('x@y.co', FILTER_VALIDATE_EMAIL)); var_dump(filter_var('x@ysdfco', FILTER_VALIDATE_EMAIL)); var_dump(preg_match( "/^[a-z0-9._\-ÄÖÜäöüß\+]+@[A-Z0-9.\-ÄÖÜäöü]{2,63}\.[A-Z]{2,6}$/ui", 'atracz@i.biz' ));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/B4aMi
function name:  (null)
number of ops:  29
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'filter_var'
          2        SEND_VAL                                                 'atr%C3%BCcz%40i.biz'
          3        SEND_VAL                                                 274
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
    4     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'filter_var'
          9        SEND_VAL                                                 'x%40y.co'
         10        SEND_VAL                                                 274
         11        DO_ICALL                                         $2      
         12        SEND_VAR                                                 $2
         13        DO_ICALL                                                 
    5    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'filter_var'
         16        SEND_VAL                                                 'x%40ysdfco'
         17        SEND_VAL                                                 274
         18        DO_ICALL                                         $4      
         19        SEND_VAR                                                 $4
         20        DO_ICALL                                                 
    6    21        INIT_FCALL                                               'var_dump'
         22        INIT_FCALL                                               'preg_match'
    7    23        SEND_VAL                                                 '%2F%5E%5Ba-z0-9._%5C-%C3%84%C3%96%C3%9C%C3%A4%C3%B6%C3%BC%C3%9F%5C%2B%5D%2B%40%5BA-Z0-9.%5C-%C3%84%C3%96%C3%9C%C3%A4%C3%B6%C3%BC%5D%7B2%2C63%7D%5C.%5BA-Z%5D%7B2%2C6%7D%24%2Fui'
    8    24        SEND_VAL                                                 'atracz%40i.biz'
         25        DO_ICALL                                         $6      
         26        SEND_VAR                                                 $6
         27        DO_ICALL                                                 
    9    28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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