Reference
http://www.st.ryukoku.ac.jp/%7Ekjm/security/memo/2005/11.html#20051102_PHPhttp://blog.ohgaki.net/index.php/yohgaki/2005/11/03/phpa_rc_fei_a_oa_oa_fa_sa_le_acsa_oe_afp_1
http://blog.ohgaki.net/index.php/yohgaki/2005/11/02/phpa_rc_fei_a_oa_oa_fa_sa_le_acsa_oe_afp