或者叫，分詞檢索數據庫
$res = mysql_query("select * from peter where id like '%中草葯%' and '%6%'"); //這樣寫是報錯的；
$res = mysql_query("select * from peter where id like '%中草葯%' or '%6%'"); //而這樣寫是正確的；奇怪~
$res = mysql_query("select * from peter where id like '%中草葯%' and id like '%6%'"); //這樣寫是正確的；
$res = mysql_query("select * from peter where id like '%中草葯%' or id like '%6%'"); //這樣寫都是正確的；