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<?php function password_md5_mess($pass) { $pass=md5($pass); $split=(str_split(md5($pass),16)); //split MD5 sum (32 chars))on 2 parts md5($split[1]); //calculate MD5 on 2 (16 chars)) part of password return $password; } password_md5_mess('12345'); echo $password; ?>

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