php import SQL file (sample code)

/************
*
PHP import .sql file
Running version: php5, php4
Author: panxp
E-mail: coolpan123@gmail.com
*Edited and organized: bbs.it-home.org
 *
*************/
$host = "localhost";
$user = "root";
$pwd = "";
$file_dir = dirname(__FILE__);
$file_name = "bar.sql";
$data_base = "test";
$conn = mysql_connect($host,$user,$pwd);
mysql_select_db($data_base,$conn);
/**PHP5 version **/
$get_sql_data = file_get_contents($file_name,$file_dir);
/**
* PHP4 版本
if(file_exists($file_dir."/".$file_name))
{
    $get_sql_data = fopen($file_dir."/".$file_name,"r");
    if(!$get_sql_data)
    {
        echo "不能打开文件";
    }
    else
    {
        $get_sql_data = fread($get_sql_data, filesize ($file_dir."/".$file_name));
    }
}
***/
$explode = explode(";",$get_sql_data);
$cnt = count($explode);
for($i=0;$i
    $sql = $explode[$i];
    $result = mysql_query($sql);
    if($result){
        echo "成功:".$i."个查询";
    }
    else
    {
        echo "导入失败:".mysql_error();
    }
}
?>