请帮小弟我看看一段数据库管理的代码为何无效

<?php<br />$dbcon = mysql_connect("localhost","××××","×××××");<br />if(!$dbcon)<br />{<br />    die('could not connect: ' . mysql_error());<br />}<br />echo "mysql connected\n";<br />mysql_query("CREATE DATABASE soap_calc",$dbcon);<br />mysql_select_db("soap_calc",$dbcon);<br />$sql = "CREATE TABLE oils<br />(<br />ID int NOT NULL AUTO_INCREMENT,<br />CN_Name varchar(15),<br />EN_Name varchar(30),<br />SAP decimal(5,3),<br />SAP_NaOH decimal(5,3),<br />Non_Sapon decimal(5,3),<br />Iodine decimal(10,3),<br />PRIMARY KEY (ID)<br />)";<br />mysql_query($sql,$dbcon);<br /><br />//read items from file<br />$file = fopen("oiltable", "r");<br />while(!feof($file))<br />{<br />    fscanf($file,"%s %s %s %s %s \n",$CNN,$ENN,$NAOH,$KOH,$INS);<br />    mysql_query("INSERT INTO oils (CN_Name,EN_Name,SAP,SAP_NaOH)<br />                 VALUES ('$CNN','$ENN','$KOH','$NAOH')");<br />}<br />mysql_close($dbcon);<br />echo "db finished\n";<br />?>