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Posted By

dbugger on 03/29/11

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Last Edited at 03/29/11 11:31pm

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Email validation

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  1. function check_email_address($email) {
  2.   if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email)) {
  3.     return false;
  4.   }
  5.  
  6.   $email_array = explode("@", $email);
  7.   $local_array = explode(".", $email_array[0]);
  8.   for ($i = 0; $i < sizeof($local_array); $i++) {
  9.     if (!ereg("^(([A-Za-z0-9!#$%&'*+/=?^_`{|}~-][A-Za-z0-9!#$%&�'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$",$local_array[$i])) {
  10.       return false;
  11.     }
  12.   }
  13.  
  14.   if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) {
  15.     $domain_array = explode(".", $email_array[1]);
  16.  
  17.     if (sizeof($domain_array) < 2) {
  18.       return false;
  19.     }
  20.     for ($i = 0; $i < sizeof($domain_array); $i++) {
  21.       if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|�([A-Za-z0-9]+))$",$domain_array[$i])) {
  22.         return false;
  23.       }
  24.     }
  25.   }
  26.   return true;
  27. }

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