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<?php $email = '158412154@qq.com'; $aa = preg_match("/[_a-zA-Z\d\-\.]+@[_a-zA-Z\d\-]+(\.[_a-zA-Z\d\-]+)+$/i", $email); var_dump($aa);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ph1kp
function name:  (null)
number of ops:  10
compiled vars:  !0 = $email, !1 = $aa
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '158412154%40qq.com'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5B_a-zA-Z%5Cd%5C-%5C.%5D%2B%40%5B_a-zA-Z%5Cd%5C-%5D%2B%28%5C.%5B_a-zA-Z%5Cd%5C-%5D%2B%29%2B%24%2Fi'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
    4     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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