<?php    function into($constr)    {        $con = mysql_connect("localhost","root","root");        if (!$con)          {          die(‘Could not connect: ‘ . mysql_error());          }        mysql_select_db("sa", $con);        mysql_query($constr);        mysql_close($con);    }        //调用实例    $str="INSERT  INTO  doc (doc_num,doc_name,doc_from,doc_time) VALUES (‘2014-3‘,‘a test name‘,‘‘,‘2014/9/25‘)";    into($str);?>